v3.25.2
Shareholder Report
 6 Months Ended
Apr. 30, 2025
USD ($)
shares
Shareholder Report [Line Items]  
Document Type N-CSRS
Amendment Flag false
Registrant Name Fidelity Investment Trust
Entity Central Index Key 0000744822
Entity Investment Company Type N-1A
Document Period End Date Apr. 30, 2025
Fidelity Advisor International Small Cap Fund - Class C  
Shareholder Report [Line Items]  
Fund Name Fidelity® International Small Cap Fund
Class Name Fidelity Advisor® International Small Cap Fund Class C
Trading Symbol FICSX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® International Small Cap Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class C 
$ 102 
2.00%
  
Expenses Paid, Amount $ 102
Expense Ratio, Percent 2.00%
Net Assets $ 4,896,590,377
Holdings Count | shares 199
Investment Company Portfolio Turnover 18.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$4,896,590,377
  
Number of Holdings
199
  
Portfolio Turnover
18%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Industrials 23.4   Financials 15.8   Consumer Staples 10.8   Consumer Discretionary 10.0   Materials 8.2   Information Technology 7.6   Health Care 6.0   Real Estate 5.8   Communication Services 4.6   Energy 3.5   Utilities 0.6     Common Stocks 96.3 Short-Term Investments and Net Other Assets (Liabilities) 3.7 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 96.3                       Short-Term Investments and Net Other Assets (Liabilities) - 3.7   Japan 22.3 United Kingdom 13.4 United States 6.6 Canada 4.1 Australia 3.8 Spain 3.6 China 3.5 Mexico 3.5 Italy 3.1 Others 36.1 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Japan - 22.3                               United Kingdom - 13.4                      United States - 6.6                        Canada - 4.1                               Australia - 3.8                            Spain - 3.6                                China - 3.5                                Mexico - 3.5                               Italy - 3.1                                Others - 36.1                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Logista Integral SA 1.1   BayCurrent Inc 1.1   Premier Foods PLC 1.1   Ashtead Technology Holdings plc 1.1   Metlen Energy & Metals SA 1.0   Grupo Catalana Occidente SA 1.0   Century Pacific Food Inc 1.0   Richter Gedeon Nyrt 0.9   Spar Nord Bank A/S 0.9   Qualitas Controladora SAB de CV 0.9     10.1  
Fidelity Advisor International Small Cap Opportunities Fund - Class C  
Shareholder Report [Line Items]  
Fund Name Fidelity® International Small Cap Opportunities Fund
Class Name Fidelity Advisor® International Small Cap Opportunities Fund Class C
Trading Symbol FOPCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® International Small Cap Opportunities Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class C 
$ 102 
1.99%
  
Expenses Paid, Amount $ 102
Expense Ratio, Percent 1.99%
Net Assets $ 1,340,297,691
Holdings Count | shares 115
Investment Company Portfolio Turnover 30.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$1,340,297,691
  
Number of Holdings
115
  
Portfolio Turnover
30%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Industrials 30.2   Information Technology 21.0   Consumer Discretionary 11.2   Communication Services 7.8   Financials 6.0   Materials 4.5   Health Care 3.7   Consumer Staples 3.2   Real Estate 2.8   Energy 1.1     Common Stocks 91.5 International Equity Funds 4.9 Short-Term Investments and Net Other Assets (Liabilities) 3.6 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 91.5                       International Equity Funds - 4.9           Short-Term Investments and Net Other Assets (Liabilities) - 3.6   Japan 26.5 United Kingdom 15.1 Sweden 14.1 United States 10.9 Germany 5.5 Netherlands 4.7 Canada 4.0 Belgium 2.6 France 2.5 Others 14.1 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Japan - 26.5                               United Kingdom - 15.1                      Sweden - 14.1                              United States - 10.9                       Germany - 5.5                              Netherlands - 4.7                          Canada - 4.0                               Belgium - 2.6                              France - 2.5                               Others - 14.1                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Lagercrantz Group AB B Shares 5.2   iShares MSCI EAFE Small-Cap ETF 4.9   AddTech AB B Shares 4.7   Azbil Corp 3.5   CTS Eventim AG & Co KGaA 2.7   Games Workshop Group PLC 2.2   KBC Ancora 2.1   Interpump Group SpA 2.1   Spectris PLC 2.1   Howden Joinery Group PLC 2.0     31.5  
Fidelity International Discovery Fund  
Shareholder Report [Line Items]  
Fund Name Fidelity® International Discovery Fund
Class Name Fidelity® International Discovery Fund
Trading Symbol FIGRX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® International Discovery Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-800-544-8544
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Fidelity® International Discovery Fund 
$ 32 
0.62%
  
Expenses Paid, Amount $ 32
Expense Ratio, Percent 0.62%
Net Assets $ 10,296,192,153
Holdings Count | shares 135
Investment Company Portfolio Turnover 52.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$10,296,192,153
  
Number of Holdings
135
  
Portfolio Turnover
52%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 25.7   Industrials 23.4   Consumer Discretionary 13.0   Information Technology 12.9   Health Care 7.3   Communication Services 6.7   Materials 3.4   Consumer Staples 2.3   Energy 1.1     Common Stocks 94.9 Preferred Stocks 0.9 Short-Term Investments and Net Other Assets (Liabilities) 4.2 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 94.9                       Preferred Stocks - 0.9                     Short-Term Investments and Net Other Assets (Liabilities) - 4.2   United Kingdom 17.6 Japan 16.1 France 9.9 Germany 9.6 United States 9.0 Italy 5.7 Netherlands 5.7 Canada 3.7 Sweden 3.6 Others 19.1 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United Kingdom - 17.6                      Japan - 16.1                               France - 9.9                               Germany - 9.6                              United States - 9.0                        Italy - 5.7                                Netherlands - 5.7                          Canada - 3.7                               Sweden - 3.6                               Others - 19.1                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     UniCredit SpA 3.4   Rheinmetall AG 2.9   SAP SE 2.8   Hitachi Ltd 2.8   Constellation Software Inc/Canada 2.4   AXA SA 2.3   London Stock Exchange Group PLC 2.1   3i Group PLC 2.0   RELX PLC 1.9   Taiwan Semiconductor Manufacturing Co Ltd 1.9     24.5  
Fidelity Diversified International K6 Fund  
Shareholder Report [Line Items]  
Fund Name Fidelity® Diversified International K6 Fund
Class Name Fidelity® Diversified International K6 Fund
Trading Symbol FKIDX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Diversified International K6 Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-800-835-5092
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Fidelity® Diversified International K6 Fund 
$ 31 
0.60%
  
Expenses Paid, Amount $ 31
Expense Ratio, Percent 0.60%
Net Assets $ 4,524,523,977
Holdings Count | shares 139
Investment Company Portfolio Turnover 37.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$4,524,523,977
  
Number of Holdings
139
  
Portfolio Turnover
37%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 26.8   Industrials 26.6   Information Technology 10.4   Health Care 9.0   Materials 8.3   Consumer Discretionary 7.8   Energy 3.0   Communication Services 2.3   Consumer Staples 0.7     Common Stocks 94.4 Preferred Stocks 0.5 Short-Term Investments and Net Other Assets (Liabilities) 5.1 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 94.4                       Preferred Stocks - 0.5                     Short-Term Investments and Net Other Assets (Liabilities) - 5.1   Japan 17.3 United States 16.0 United Kingdom 15.5 Germany 11.6 France 9.1 Canada 4.8 Netherlands 4.2 Sweden 3.0 Italy 2.9 Others 15.6 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Japan - 17.3                               United States - 16.0                       United Kingdom - 15.5                      Germany - 11.6                             France - 9.1                               Canada - 4.8                               Netherlands - 4.2                          Sweden - 3.0                               Italy - 2.9                                Others - 15.6                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     SAP SE 2.7   Hitachi Ltd 2.5   Allianz SE 2.1   RELX PLC (Netherlands) 1.9   UniCredit SpA 1.8   London Stock Exchange Group PLC 1.8   Rolls-Royce Holdings PLC 1.7   Mitsubishi Heavy Industries Ltd 1.6   Wolters Kluwer NV 1.5   Astrazeneca PLC 1.5     19.1  
Fidelity Advisor Japan Fund - Class Z  
Shareholder Report [Line Items]  
Fund Name Fidelity® Japan Fund
Class Name Fidelity Advisor® Japan Fund Class Z
Trading Symbol FIQLX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Japan Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class Z 
$ 30 
0.59%
  
Expenses Paid, Amount $ 30
Expense Ratio, Percent 0.59%
Net Assets $ 710,338,465
Holdings Count | shares 86
Investment Company Portfolio Turnover 31.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$710,338,465
  
Number of Holdings
86
  
Portfolio Turnover
31%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Industrials 28.4   Information Technology 19.0   Financials 15.1   Consumer Discretionary 11.6   Communication Services 6.8   Materials 6.4   Health Care 5.5   Consumer Staples 2.5   Real Estate 1.1   Energy 1.0     Common Stocks 97.4 Short-Term Investments and Net Other Assets (Liabilities) 2.6 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 97.4                       Short-Term Investments and Net Other Assets (Liabilities) - 2.6   Japan 96.7 United States 3.1 China 0.2 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Japan - 96.7                               United States - 3.1                        China - 0.2                                   
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Sumitomo Mitsui Financial Group Inc 6.4   Sony Group Corp 5.1   Hitachi Ltd 4.8   Fujitsu Ltd 3.0   Tokio Marine Holdings Inc 2.9   Hoya Corp 2.9   ORIX Corp 2.8   Nintendo Co Ltd 2.8   Shin-Etsu Chemical Co Ltd 2.7   FUJIFILM Holdings Corp 2.5     35.9  
Fidelity Canada Fund  
Shareholder Report [Line Items]  
Fund Name Fidelity® Canada Fund
Class Name Fidelity® Canada Fund
Trading Symbol FICDX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Canada Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-800-544-8544
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Fidelity® Canada Fund 
$ 48 
0.93%
  
Expenses Paid, Amount $ 48
Expense Ratio, Percent 0.93%
Net Assets $ 942,606,561
Holdings Count | shares 68
Investment Company Portfolio Turnover 12.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$942,606,561
  
Number of Holdings
68
  
Portfolio Turnover
12%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 28.2   Energy 15.6   Industrials 12.5   Materials 12.2   Information Technology 11.7   Consumer Staples 8.6   Consumer Discretionary 7.5   Communication Services 2.2   Health Care 0.8   Utilities 0.2     Common Stocks 99.0 Preferred Stocks 0.3 Bonds 0.2 Short-Term Investments and Net Other Assets (Liabilities) 0.5 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 99.0                       Preferred Stocks - 0.3                     Bonds - 0.2                                Short-Term Investments and Net Other Assets (Liabilities) - 0.5   Canada 92.7 United States 3.7 Brazil 3.0 Chile 0.5 Zambia 0.1 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Canada - 92.7                              United States - 3.7                        Brazil - 3.0                               Chile - 0.5                                Zambia - 0.1                                  
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Royal Bank of Canada 7.9   Constellation Software Inc/Canada 6.2   Canadian Pacific Kansas City Ltd 5.0   Alimentation Couche-Tard Inc 4.6   Franco-Nevada Corp 4.5   Toronto Dominion Bank 3.9   Shopify Inc Class A 3.8   Dollarama Inc 3.8   Canadian Natural Resources Ltd 3.7   PrairieSky Royalty Ltd 3.3     46.7  
Fidelity Advisor International Small Cap Opportunities Fund - Class I  
Shareholder Report [Line Items]  
Fund Name Fidelity® International Small Cap Opportunities Fund
Class Name Fidelity Advisor® International Small Cap Opportunities Fund Class I
Trading Symbol FOPIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® International Small Cap Opportunities Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class I 
$ 51 
0.99%
  
Expenses Paid, Amount $ 51
Expense Ratio, Percent 0.99%
Net Assets $ 1,340,297,691
Holdings Count | shares 115
Investment Company Portfolio Turnover 30.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$1,340,297,691
  
Number of Holdings
115
  
Portfolio Turnover
30%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Industrials 30.2   Information Technology 21.0   Consumer Discretionary 11.2   Communication Services 7.8   Financials 6.0   Materials 4.5   Health Care 3.7   Consumer Staples 3.2   Real Estate 2.8   Energy 1.1     Common Stocks 91.5 International Equity Funds 4.9 Short-Term Investments and Net Other Assets (Liabilities) 3.6 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 91.5                       International Equity Funds - 4.9           Short-Term Investments and Net Other Assets (Liabilities) - 3.6   Japan 26.5 United Kingdom 15.1 Sweden 14.1 United States 10.9 Germany 5.5 Netherlands 4.7 Canada 4.0 Belgium 2.6 France 2.5 Others 14.1 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Japan - 26.5                               United Kingdom - 15.1                      Sweden - 14.1                              United States - 10.9                       Germany - 5.5                              Netherlands - 4.7                          Canada - 4.0                               Belgium - 2.6                              France - 2.5                               Others - 14.1                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Lagercrantz Group AB B Shares 5.2   iShares MSCI EAFE Small-Cap ETF 4.9   AddTech AB B Shares 4.7   Azbil Corp 3.5   CTS Eventim AG & Co KGaA 2.7   Games Workshop Group PLC 2.2   KBC Ancora 2.1   Interpump Group SpA 2.1   Spectris PLC 2.1   Howden Joinery Group PLC 2.0     31.5  
Fidelity Advisor International Small Cap Opportunities Fund - Class A  
Shareholder Report [Line Items]  
Fund Name Fidelity® International Small Cap Opportunities Fund
Class Name Fidelity Advisor® International Small Cap Opportunities Fund Class A
Trading Symbol FOPAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® International Small Cap Opportunities Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class A 
$ 64 
1.24%
  
Expenses Paid, Amount $ 64
Expense Ratio, Percent 1.24%
Net Assets $ 1,340,297,691
Holdings Count | shares 115
Investment Company Portfolio Turnover 30.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$1,340,297,691
  
Number of Holdings
115
  
Portfolio Turnover
30%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Industrials 30.2   Information Technology 21.0   Consumer Discretionary 11.2   Communication Services 7.8   Financials 6.0   Materials 4.5   Health Care 3.7   Consumer Staples 3.2   Real Estate 2.8   Energy 1.1     Common Stocks 91.5 International Equity Funds 4.9 Short-Term Investments and Net Other Assets (Liabilities) 3.6 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 91.5                       International Equity Funds - 4.9           Short-Term Investments and Net Other Assets (Liabilities) - 3.6   Japan 26.5 United Kingdom 15.1 Sweden 14.1 United States 10.9 Germany 5.5 Netherlands 4.7 Canada 4.0 Belgium 2.6 France 2.5 Others 14.1 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Japan - 26.5                               United Kingdom - 15.1                      Sweden - 14.1                              United States - 10.9                       Germany - 5.5                              Netherlands - 4.7                          Canada - 4.0                               Belgium - 2.6                              France - 2.5                               Others - 14.1                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Lagercrantz Group AB B Shares 5.2   iShares MSCI EAFE Small-Cap ETF 4.9   AddTech AB B Shares 4.7   Azbil Corp 3.5   CTS Eventim AG & Co KGaA 2.7   Games Workshop Group PLC 2.2   KBC Ancora 2.1   Interpump Group SpA 2.1   Spectris PLC 2.1   Howden Joinery Group PLC 2.0     31.5  
Fidelity Advisor Emerging Markets Discovery Fund - Class I  
Shareholder Report [Line Items]  
Fund Name Fidelity® Emerging Markets Discovery Fund
Class Name Fidelity Advisor® Emerging Markets Discovery Fund Class I
Trading Symbol FEDIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Emerging Markets Discovery Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class I 
$ 51 
1.02%
  
Expenses Paid, Amount $ 51
Expense Ratio, Percent 1.02%
Net Assets $ 1,026,456,466
Holdings Count | shares 103
Investment Company Portfolio Turnover 38.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$1,026,456,466
  
Number of Holdings
103
  
Portfolio Turnover
38%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Industrials 22.1   Financials 18.6   Consumer Discretionary 16.1   Consumer Staples 10.9   Information Technology 10.3   Health Care 4.7   Real Estate 4.3   Communication Services 3.6   Energy 2.9   Utilities 2.4   Materials 2.1     Common Stocks 98.0 Short-Term Investments and Net Other Assets (Liabilities) 2.0 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 98.0                       Short-Term Investments and Net Other Assets (Liabilities) - 2.0   Taiwan 17.8 China 17.5 Brazil 13.1 India 11.9 Korea (South) 7.6 Mexico 5.5 Indonesia 4.1 United States 3.3 Poland 2.7 Others 16.5 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Taiwan - 17.8                              China - 17.5                               Brazil - 13.1                              India - 11.9                               Korea (South) - 7.6                        Mexico - 5.5                               Indonesia - 4.1                            United States - 3.3                        Poland - 2.7                               Others - 16.5                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     OPAP SA 1.7   Localiza Rent a Car SA 1.6   Lion Finance Group PLC 1.5   Dino Polska SA 1.5   Max Healthcare Institute Ltd 1.4   Qualitas Controladora SAB de CV 1.4   Eicher Motors Ltd 1.3   Equatorial Energia SA 1.3   Shriram Finance Ltd 1.3   Banco de Chile ADR 1.3     14.3  
Fidelity Advisor Global Equity Income Fund - Class C  
Shareholder Report [Line Items]  
Fund Name Fidelity® Global Equity Income Fund
Class Name Fidelity Advisor® Global Equity Income Fund Class C
Trading Symbol FGEHX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Global Equity Income Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class C 
$ 99 
1.94%
  
Expenses Paid, Amount $ 99
Expense Ratio, Percent 1.94%
Net Assets $ 292,744,990
Holdings Count | shares 151
Investment Company Portfolio Turnover 12.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$292,744,990
  
Number of Holdings
151
  
Portfolio Turnover
12%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Information Technology 18.1   Industrials 15.2   Financials 14.2   Health Care 11.3   Consumer Discretionary 9.7   Consumer Staples 9.3   Communication Services 7.5   Energy 4.7   Utilities 4.1   Materials 3.6   Real Estate 1.1     Common Stocks 98.8 Short-Term Investments and Net Other Assets (Liabilities) 1.2 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 98.8                       Short-Term Investments and Net Other Assets (Liabilities) - 1.2   United States 58.7 United Kingdom 7.6 Germany 7.1 Japan 6.0 Canada 4.9 France 3.4 Taiwan 2.3 Netherlands 1.6 Ireland 1.5 Others 6.9 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 58.7                       United Kingdom - 7.6                       Germany - 7.1                              Japan - 6.0                                Canada - 4.9                               France - 3.4                               Taiwan - 2.3                               Netherlands - 1.6                          Ireland - 1.5                              Others - 6.9                                  
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Rheinmetall AG 5.2   Apple Inc 4.6   Microsoft Corp 4.2   Taiwan Semiconductor Manufacturing Co Ltd 2.3   JPMorgan Chase & Co 1.8   AbbVie Inc 1.6   NXP Semiconductors NV 1.6   T-Mobile US Inc 1.5   Eli Lilly & Co 1.4   Linde PLC 1.4     25.6  
Fidelity Advisor China Region Fund - Class C  
Shareholder Report [Line Items]  
Fund Name Fidelity® China Region Fund
Class Name Fidelity Advisor® China Region Fund Class C
Trading Symbol FCHKX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® China Region Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class C 
$ 94 
1.93%
  
Expenses Paid, Amount $ 94
Expense Ratio, Percent 1.93%
Net Assets $ 1,096,792,327
Holdings Count | shares 76
Investment Company Portfolio Turnover 32.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$1,096,792,327
  
Number of Holdings
76
  
Portfolio Turnover
32%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Information Technology 30.9   Consumer Discretionary 22.4   Communication Services 17.2   Financials 13.2   Health Care 4.3   Materials 3.2   Industrials 2.8   Consumer Staples 2.7   Real Estate 1.1     Common Stocks 95.8 Preferred Stocks 2.0 Short-Term Investments and Net Other Assets (Liabilities) 2.2 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 95.8                       Preferred Stocks - 2.0                     Short-Term Investments and Net Other Assets (Liabilities) - 2.2   China 60.2 Taiwan 29.1 Hong Kong 4.1 United States 3.2 Singapore 1.4 Korea (South) 1.1 South Africa 0.5 France 0.4 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     China - 60.2                               Taiwan - 29.1                              Hong Kong - 4.1                            United States - 3.2                        Singapore - 1.4                            Korea (South) - 1.1                        South Africa - 0.5                         France - 0.4                                  
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Taiwan Semiconductor Manufacturing Co Ltd 21.7   Tencent Holdings Ltd 13.4   Alibaba Group Holding Ltd 6.6   PDD Holdings Inc Class A ADR 4.0   China Construction Bank Corp H Shares 3.4   AIA Group Ltd 3.2   Zijin Mining Group Co Ltd H Shares 2.6   Industrial & Commercial Bank of China Ltd H Shares 1.7   MediaTek Inc 1.6   Meituan B Shares 1.5     59.7  
Fidelity Advisor Global Equity Income Fund - Class M  
Shareholder Report [Line Items]  
Fund Name Fidelity® Global Equity Income Fund
Class Name Fidelity Advisor® Global Equity Income Fund Class M
Trading Symbol FGEGX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Global Equity Income Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class M 
$ 73 
1.44%
  
Expenses Paid, Amount $ 73
Expense Ratio, Percent 1.44%
Net Assets $ 292,744,990
Holdings Count | shares 151
Investment Company Portfolio Turnover 12.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$292,744,990
  
Number of Holdings
151
  
Portfolio Turnover
12%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Information Technology 18.1   Industrials 15.2   Financials 14.2   Health Care 11.3   Consumer Discretionary 9.7   Consumer Staples 9.3   Communication Services 7.5   Energy 4.7   Utilities 4.1   Materials 3.6   Real Estate 1.1     Common Stocks 98.8 Short-Term Investments and Net Other Assets (Liabilities) 1.2 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 98.8                       Short-Term Investments and Net Other Assets (Liabilities) - 1.2   United States 58.7 United Kingdom 7.6 Germany 7.1 Japan 6.0 Canada 4.9 France 3.4 Taiwan 2.3 Netherlands 1.6 Ireland 1.5 Others 6.9 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 58.7                       United Kingdom - 7.6                       Germany - 7.1                              Japan - 6.0                                Canada - 4.9                               France - 3.4                               Taiwan - 2.3                               Netherlands - 1.6                          Ireland - 1.5                              Others - 6.9                                  
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Rheinmetall AG 5.2   Apple Inc 4.6   Microsoft Corp 4.2   Taiwan Semiconductor Manufacturing Co Ltd 2.3   JPMorgan Chase & Co 1.8   AbbVie Inc 1.6   NXP Semiconductors NV 1.6   T-Mobile US Inc 1.5   Eli Lilly & Co 1.4   Linde PLC 1.4     25.6  
Fidelity Global Equity Income Fund  
Shareholder Report [Line Items]  
Fund Name Fidelity® Global Equity Income Fund
Class Name Fidelity® Global Equity Income Fund
Trading Symbol FGILX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Global Equity Income Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-800-544-8544
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Fidelity® Global Equity Income Fund 
$ 46 
0.90%
  
Expenses Paid, Amount $ 46
Expense Ratio, Percent 0.90%
Net Assets $ 292,744,990
Holdings Count | shares 151
Investment Company Portfolio Turnover 12.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$292,744,990
  
Number of Holdings
151
  
Portfolio Turnover
12%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Information Technology 18.1   Industrials 15.2   Financials 14.2   Health Care 11.3   Consumer Discretionary 9.7   Consumer Staples 9.3   Communication Services 7.5   Energy 4.7   Utilities 4.1   Materials 3.6   Real Estate 1.1     Common Stocks 98.8 Short-Term Investments and Net Other Assets (Liabilities) 1.2 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 98.8                       Short-Term Investments and Net Other Assets (Liabilities) - 1.2   United States 58.7 United Kingdom 7.6 Germany 7.1 Japan 6.0 Canada 4.9 France 3.4 Taiwan 2.3 Netherlands 1.6 Ireland 1.5 Others 6.9 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 58.7                       United Kingdom - 7.6                       Germany - 7.1                              Japan - 6.0                                Canada - 4.9                               France - 3.4                               Taiwan - 2.3                               Netherlands - 1.6                          Ireland - 1.5                              Others - 6.9                                  
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Rheinmetall AG 5.2   Apple Inc 4.6   Microsoft Corp 4.2   Taiwan Semiconductor Manufacturing Co Ltd 2.3   JPMorgan Chase & Co 1.8   AbbVie Inc 1.6   NXP Semiconductors NV 1.6   T-Mobile US Inc 1.5   Eli Lilly & Co 1.4   Linde PLC 1.4     25.6  
Fidelity Advisor Emerging Markets Fund - Class C  
Shareholder Report [Line Items]  
Fund Name Fidelity® Emerging Markets Fund
Class Name Fidelity Advisor® Emerging Markets Fund Class C
Trading Symbol FEMMX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Emerging Markets Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class C 
$ 92 
1.89%
  
Expenses Paid, Amount $ 92
Expense Ratio, Percent 1.89%
Net Assets $ 6,926,988,734
Holdings Count | shares 79
Investment Company Portfolio Turnover 35.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$6,926,988,734
  
Number of Holdings
79
  
Portfolio Turnover
35%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Information Technology 25.5   Financials 19.7   Consumer Discretionary 15.0   Communication Services 12.7   Industrials 8.9   Energy 6.0   Health Care 4.4   Consumer Staples 4.3   Utilities 1.8   Real Estate 0.6   Materials 0.5     Common Stocks 98.8 Bonds 0.4 Preferred Stocks 0.2 Short-Term Investments and Net Other Assets (Liabilities) 0.6 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 98.8                       Bonds - 0.4                                Preferred Stocks - 0.2                     Short-Term Investments and Net Other Assets (Liabilities) - 0.6   China 25.4 India 19.5 Taiwan 15.7 Korea (South) 6.0 Brazil 5.9 United States 4.8 Mexico 3.0 France 2.9 Indonesia 2.9 Others 13.9 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     China - 25.4                               India - 19.5                               Taiwan - 15.7                              Korea (South) - 6.0                        Brazil - 5.9                               United States - 4.8                        Mexico - 3.0                               France - 2.9                               Indonesia - 2.9                            Others - 13.9                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Taiwan Semiconductor Manufacturing Co Ltd 13.2   Tencent Holdings Ltd 8.7   NVIDIA Corp 3.4   Alibaba Group Holding Ltd ADR 3.2   HDFC Bank Ltd 3.1   Bank Central Asia Tbk PT 2.9   PDD Holdings Inc Class A ADR 2.6   Samsung Electronics Co Ltd 2.5   Reliance Industries Ltd 2.1   SK Hynix Inc 2.1     43.8  
Fidelity Advisor Total International Equity Fund - Class Z  
Shareholder Report [Line Items]  
Fund Name Fidelity® Total International Equity Fund
Class Name Fidelity Advisor® Total International Equity Fund Class Z
Trading Symbol FIEZX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Total International Equity Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class Z 
$ 41 
0.80%
  
Expenses Paid, Amount $ 41
Expense Ratio, Percent 0.80%
Net Assets $ 448,437,698
Holdings Count | shares 317
Investment Company Portfolio Turnover 42.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$448,437,698
  
Number of Holdings
317
  
Portfolio Turnover
42%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 27.2   Industrials 20.7   Information Technology 12.1   Materials 9.9   Consumer Discretionary 9.3   Communication Services 5.6   Health Care 4.8   Energy 3.9   Consumer Staples 3.4   Real Estate 0.2   Utilities 0.2     Common Stocks 97.2 Preferred Stocks 0.1 Short-Term Investments and Net Other Assets (Liabilities) 2.7 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 97.2                       Preferred Stocks - 0.1                     Short-Term Investments and Net Other Assets (Liabilities) - 2.7   United States 13.8 Japan 10.1 United Kingdom 9.8 China 9.7 Germany 7.3 Canada 7.2 France 7.1 Taiwan 3.7 Sweden 3.6 Others 27.7 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 13.8                       Japan - 10.1                               United Kingdom - 9.8                       China - 9.7                                Germany - 7.3                              Canada - 7.2                               France - 7.1                               Taiwan - 3.7                               Sweden - 3.6                               Others - 27.7                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Tencent Holdings Ltd 2.9   Taiwan Semiconductor Manufacturing Co Ltd 2.3   SAP SE 2.1   Samsung Electronics Co Ltd 1.8   CRH PLC 1.8   Safran SA 1.5   Linde PLC 1.4   BAE Systems PLC 1.3   Alibaba Group Holding Ltd ADR 1.1   Wal-Mart de Mexico SAB de CV Series V 1.1     17.3  
Fidelity Advisor International Value Fund - Class M  
Shareholder Report [Line Items]  
Fund Name Fidelity® International Value Fund
Class Name Fidelity Advisor® International Value Fund Class M
Trading Symbol FIVPX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® International Value Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class M 
$ 71 
1.35%
  
Expenses Paid, Amount $ 71
Expense Ratio, Percent 1.35%
Net Assets $ 2,052,754,816
Holdings Count | shares 107
Investment Company Portfolio Turnover 34.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$2,052,754,816
  
Number of Holdings
107
  
Portfolio Turnover
34%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 38.8   Industrials 15.4   Materials 10.2   Energy 6.2   Health Care 5.9   Consumer Discretionary 5.1   Consumer Staples 3.8   Communication Services 3.3   Information Technology 2.7   Utilities 0.7   Real Estate 0.5     Common Stocks 92.4 Preferred Stocks 0.2 Short-Term Investments and Net Other Assets (Liabilities) 7.4 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 92.4                       Preferred Stocks - 0.2                     Short-Term Investments and Net Other Assets (Liabilities) - 7.4   Japan 20.3 United States 17.1 United Kingdom 13.7 Germany 13.4 France 9.8 Italy 4.9 Switzerland 3.7 Australia 3.4 Spain 3.1 Others 10.6 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Japan - 20.3                               United States - 17.1                       United Kingdom - 13.7                      Germany - 13.4                             France - 9.8                               Italy - 4.9                                Switzerland - 3.7                          Australia - 3.4                            Spain - 3.1                                Others - 10.6                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Shell PLC ADR 2.9   AXA SA 2.6   Banco Santander SA 2.5   Rheinmetall AG 2.4   Zurich Insurance Group AG 2.3   Mitsubishi UFJ Financial Group Inc 2.2   Sumitomo Mitsui Financial Group Inc 2.1   Roche Holding AG 2.1   BAE Systems PLC 2.0   Muenchener Rueckversicherungs-Gesellschaft AG in Muenchen 2.0     23.1  
Fidelity Advisor Worldwide Fund - Class I  
Shareholder Report [Line Items]  
Fund Name Fidelity® Worldwide Fund
Class Name Fidelity Advisor® Worldwide Fund Class I
Trading Symbol FWIFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Worldwide Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class I 
$ 37 
0.78%
  
Expenses Paid, Amount $ 37
Expense Ratio, Percent 0.78%
Net Assets $ 2,906,574,043
Holdings Count | shares 165
Investment Company Portfolio Turnover 163.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$2,906,574,043
  
Number of Holdings
165
  
Portfolio Turnover
163%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Information Technology 19.3   Consumer Discretionary 16.3   Financials 15.4   Communication Services 12.9   Health Care 8.6   Industrials 7.1   Consumer Staples 5.6   Real Estate 3.8   Energy 3.2   Materials 2.1   Utilities 2.0     Common Stocks 96.1 Preferred Stocks 0.2 Short-Term Investments and Net Other Assets (Liabilities) 3.7 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 96.1                       Preferred Stocks - 0.2                     Short-Term Investments and Net Other Assets (Liabilities) - 3.7   United States 65.2 United Kingdom 5.0 Japan 3.8 Canada 3.6 Sweden 3.2 Spain 2.0 Netherlands 1.7 Italy 1.7 France 1.5 Others 12.3 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 65.2                       United Kingdom - 5.0                       Japan - 3.8                                Canada - 3.6                               Sweden - 3.2                               Spain - 2.0                                Netherlands - 1.7                          Italy - 1.7                                France - 1.5                               Others - 12.3                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Amazon.com Inc 4.1   NVIDIA Corp 4.0   Meta Platforms Inc Class A 3.5   Microsoft Corp 3.1   Robinhood Markets Inc Class A 2.9   Apple Inc 2.6   Alphabet Inc Class A 2.6   Kyndryl Holdings Inc 2.5   Prologis Inc 2.1   DraftKings Inc Class A 2.0     29.4  
Fidelity Worldwide Fund  
Shareholder Report [Line Items]  
Fund Name Fidelity® Worldwide Fund
Class Name Fidelity® Worldwide Fund
Trading Symbol FWWFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Worldwide Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-800-544-8544
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Fidelity® Worldwide Fund 
$ 36 
0.74%
  
Expenses Paid, Amount $ 36
Expense Ratio, Percent 0.74%
Net Assets $ 2,906,574,043
Holdings Count | shares 165
Investment Company Portfolio Turnover 163.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$2,906,574,043
  
Number of Holdings
165
  
Portfolio Turnover
163%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Information Technology 19.3   Consumer Discretionary 16.3   Financials 15.4   Communication Services 12.9   Health Care 8.6   Industrials 7.1   Consumer Staples 5.6   Real Estate 3.8   Energy 3.2   Materials 2.1   Utilities 2.0     Common Stocks 96.1 Preferred Stocks 0.2 Short-Term Investments and Net Other Assets (Liabilities) 3.7 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 96.1                       Preferred Stocks - 0.2                     Short-Term Investments and Net Other Assets (Liabilities) - 3.7   United States 65.2 United Kingdom 5.0 Japan 3.8 Canada 3.6 Sweden 3.2 Spain 2.0 Netherlands 1.7 Italy 1.7 France 1.5 Others 12.3 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 65.2                       United Kingdom - 5.0                       Japan - 3.8                                Canada - 3.6                               Sweden - 3.2                               Spain - 2.0                                Netherlands - 1.7                          Italy - 1.7                                France - 1.5                               Others - 12.3                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Amazon.com Inc 4.1   NVIDIA Corp 4.0   Meta Platforms Inc Class A 3.5   Microsoft Corp 3.1   Robinhood Markets Inc Class A 2.9   Apple Inc 2.6   Alphabet Inc Class A 2.6   Kyndryl Holdings Inc 2.5   Prologis Inc 2.1   DraftKings Inc Class A 2.0     29.4  
Fidelity Advisor Global Equity Income Fund - Class A  
Shareholder Report [Line Items]  
Fund Name Fidelity® Global Equity Income Fund
Class Name Fidelity Advisor® Global Equity Income Fund Class A
Trading Symbol FGEEX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Global Equity Income Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class A 
$ 61 
1.20%
  
Expenses Paid, Amount $ 61
Expense Ratio, Percent 1.20%
Net Assets $ 292,744,990
Holdings Count | shares 151
Investment Company Portfolio Turnover 12.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$292,744,990
  
Number of Holdings
151
  
Portfolio Turnover
12%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Information Technology 18.1   Industrials 15.2   Financials 14.2   Health Care 11.3   Consumer Discretionary 9.7   Consumer Staples 9.3   Communication Services 7.5   Energy 4.7   Utilities 4.1   Materials 3.6   Real Estate 1.1     Common Stocks 98.8 Short-Term Investments and Net Other Assets (Liabilities) 1.2 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 98.8                       Short-Term Investments and Net Other Assets (Liabilities) - 1.2   United States 58.7 United Kingdom 7.6 Germany 7.1 Japan 6.0 Canada 4.9 France 3.4 Taiwan 2.3 Netherlands 1.6 Ireland 1.5 Others 6.9 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 58.7                       United Kingdom - 7.6                       Germany - 7.1                              Japan - 6.0                                Canada - 4.9                               France - 3.4                               Taiwan - 2.3                               Netherlands - 1.6                          Ireland - 1.5                              Others - 6.9                                  
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Rheinmetall AG 5.2   Apple Inc 4.6   Microsoft Corp 4.2   Taiwan Semiconductor Manufacturing Co Ltd 2.3   JPMorgan Chase & Co 1.8   AbbVie Inc 1.6   NXP Semiconductors NV 1.6   T-Mobile US Inc 1.5   Eli Lilly & Co 1.4   Linde PLC 1.4     25.6  
Fidelity Advisor International Discovery Fund - Class Z  
Shareholder Report [Line Items]  
Fund Name Fidelity® International Discovery Fund
Class Name Fidelity Advisor® International Discovery Fund Class Z
Trading Symbol FZAIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® International Discovery Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class Z 
$ 28 
0.55%
  
Expenses Paid, Amount $ 28
Expense Ratio, Percent 0.55%
Net Assets $ 10,296,192,153
Holdings Count | shares 135
Investment Company Portfolio Turnover 52.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$10,296,192,153
  
Number of Holdings
135
  
Portfolio Turnover
52%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 25.7   Industrials 23.4   Consumer Discretionary 13.0   Information Technology 12.9   Health Care 7.3   Communication Services 6.7   Materials 3.4   Consumer Staples 2.3   Energy 1.1     Common Stocks 94.9 Preferred Stocks 0.9 Short-Term Investments and Net Other Assets (Liabilities) 4.2 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 94.9                       Preferred Stocks - 0.9                     Short-Term Investments and Net Other Assets (Liabilities) - 4.2   United Kingdom 17.6 Japan 16.1 France 9.9 Germany 9.6 United States 9.0 Italy 5.7 Netherlands 5.7 Canada 3.7 Sweden 3.6 Others 19.1 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United Kingdom - 17.6                      Japan - 16.1                               France - 9.9                               Germany - 9.6                              United States - 9.0                        Italy - 5.7                                Netherlands - 5.7                          Canada - 3.7                               Sweden - 3.6                               Others - 19.1                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     UniCredit SpA 3.4   Rheinmetall AG 2.9   SAP SE 2.8   Hitachi Ltd 2.8   Constellation Software Inc/Canada 2.4   AXA SA 2.3   London Stock Exchange Group PLC 2.1   3i Group PLC 2.0   RELX PLC 1.9   Taiwan Semiconductor Manufacturing Co Ltd 1.9     24.5  
Fidelity Pacific Basin Fund  
Shareholder Report [Line Items]  
Fund Name Fidelity® Pacific Basin Fund
Class Name Fidelity® Pacific Basin Fund
Trading Symbol FPBFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Pacific Basin Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-800-544-8544
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Fidelity® Pacific Basin Fund 
$ 45 
0.90%
  
Expenses Paid, Amount $ 45
Expense Ratio, Percent 0.90%
Net Assets $ 702,376,362
Holdings Count | shares 101
Investment Company Portfolio Turnover 53.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$702,376,362
  
Number of Holdings
101
  
Portfolio Turnover
53%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Information Technology 24.6   Communication Services 17.1   Financials 16.2   Consumer Discretionary 15.2   Industrials 11.9   Health Care 8.9   Materials 2.4   Consumer Staples 1.3   Utilities 0.5   Energy 0.4   Real Estate 0.4     Common Stocks 95.5 Preferred Stocks 3.4 Short-Term Investments and Net Other Assets (Liabilities) 1.1 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 95.5                       Preferred Stocks - 3.4                     Short-Term Investments and Net Other Assets (Liabilities) - 1.1   Japan 37.3 China 22.5 Korea (South) 10.8 Taiwan 9.6 Australia 7.7 United States 5.0 Hong Kong 3.2 Indonesia 1.4 Singapore 1.4 Others 1.1 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Japan - 37.3                               China - 22.5                               Korea (South) - 10.8                       Taiwan - 9.6                               Australia - 7.7                            United States - 5.0                        Hong Kong - 3.2                            Indonesia - 1.4                            Singapore - 1.4                            Others - 1.1                                  
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Taiwan Semiconductor Manufacturing Co Ltd 8.9   Tencent Holdings Ltd 5.2   Sony Group Corp 3.2   Nintendo Co Ltd 3.0   PDD Holdings Inc Class A ADR 2.8   Hitachi Ltd 2.7   Samsung Electronics Co Ltd 2.4   AIA Group Ltd 2.4   ORIX Corp 2.1   KT Corp ADR 2.0     34.7  
Fidelity Advisor Europe Fund - Class C  
Shareholder Report [Line Items]  
Fund Name Fidelity® Europe Fund
Class Name Fidelity Advisor® Europe Fund Class C
Trading Symbol FHJTX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Europe Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class C 
$ 92 
1.75%
  
Expenses Paid, Amount $ 92
Expense Ratio, Percent 1.75%
Net Assets $ 738,937,264
Holdings Count | shares 103
Investment Company Portfolio Turnover 42.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$738,937,264
  
Number of Holdings
103
  
Portfolio Turnover
42%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 23.8   Industrials 17.3   Consumer Discretionary 11.5   Health Care 10.1   Information Technology 10.1   Consumer Staples 8.1   Communication Services 7.1   Materials 3.7   Energy 3.6   Real Estate 0.8   Utilities 0.8     Common Stocks 96.8 Preferred Stocks 0.1 Short-Term Investments and Net Other Assets (Liabilities) 3.1 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 96.8                       Preferred Stocks - 0.1                     Short-Term Investments and Net Other Assets (Liabilities) - 3.1   United Kingdom 23.6 Germany 18.4 France 14.9 United States 10.7 Italy 6.5 Sweden 5.4 Netherlands 4.1 Switzerland 3.3 Spain 2.5 Others 10.6 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United Kingdom - 23.6                      Germany - 18.4                             France - 14.9                              United States - 10.7                       Italy - 6.5                                Sweden - 5.4                               Netherlands - 4.1                          Switzerland - 3.3                          Spain - 2.5                                Others - 10.6                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     SAP SE 4.3   Astrazeneca PLC 3.1   RELX PLC 2.6   ASML Holding NV 2.4   Shell PLC 2.3   Rheinmetall AG 2.3   Rolls-Royce Holdings PLC 2.1   UniCredit SpA 1.9   Siemens AG 1.8   Air Liquide SA 1.8     24.6  
Fidelity Japan Smaller Companies Fund  
Shareholder Report [Line Items]  
Fund Name Fidelity® Japan Smaller Companies Fund
Class Name Fidelity® Japan Smaller Companies Fund
Trading Symbol FJSCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Japan Smaller Companies Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-800-544-8544
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Fidelity® Japan Smaller Companies Fund 
$ 44 
0.85%
  
Expenses Paid, Amount $ 44
Expense Ratio, Percent 0.85%
Net Assets $ 425,878,188
Holdings Count | shares 87
Investment Company Portfolio Turnover 43.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$425,878,188
  
Number of Holdings
87
  
Portfolio Turnover
43%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Industrials 23.7   Information Technology 17.8   Consumer Discretionary 12.3   Financials 11.4   Materials 10.4   Consumer Staples 8.6   Communication Services 3.3   Energy 2.6   Utilities 2.6   Real Estate 2.0   Health Care 1.7     Common Stocks 96.4 Short-Term Investments and Net Other Assets (Liabilities) 3.6 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 96.4                       Short-Term Investments and Net Other Assets (Liabilities) - 3.6   Japan 96.4 United States 3.6 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Japan - 96.4                               United States - 3.6                           
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     SWCC Corp 2.6   Yamato Kogyo Co Ltd 2.6   Sompo Holdings Inc 2.5   Money Forward Inc 2.4   Argo Graphics Inc 2.2   Visional Inc 2.1   Capcom Co Ltd 2.0   Hokuhoku Financial Group Inc 2.0   Asahi Group Holdings Ltd 1.9   IHI Corp 1.9     22.2  
Fidelity Advisor International Value Fund - Class A  
Shareholder Report [Line Items]  
Fund Name Fidelity® International Value Fund
Class Name Fidelity Advisor® International Value Fund Class A
Trading Symbol FIVMX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® International Value Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class A 
$ 58 
1.10%
  
Expenses Paid, Amount $ 58
Expense Ratio, Percent 1.10%
Net Assets $ 2,052,754,816
Holdings Count | shares 107
Investment Company Portfolio Turnover 34.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$2,052,754,816
  
Number of Holdings
107
  
Portfolio Turnover
34%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 38.8   Industrials 15.4   Materials 10.2   Energy 6.2   Health Care 5.9   Consumer Discretionary 5.1   Consumer Staples 3.8   Communication Services 3.3   Information Technology 2.7   Utilities 0.7   Real Estate 0.5     Common Stocks 92.4 Preferred Stocks 0.2 Short-Term Investments and Net Other Assets (Liabilities) 7.4 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 92.4                       Preferred Stocks - 0.2                     Short-Term Investments and Net Other Assets (Liabilities) - 7.4   Japan 20.3 United States 17.1 United Kingdom 13.7 Germany 13.4 France 9.8 Italy 4.9 Switzerland 3.7 Australia 3.4 Spain 3.1 Others 10.6 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Japan - 20.3                               United States - 17.1                       United Kingdom - 13.7                      Germany - 13.4                             France - 9.8                               Italy - 4.9                                Switzerland - 3.7                          Australia - 3.4                            Spain - 3.1                                Others - 10.6                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Shell PLC ADR 2.9   AXA SA 2.6   Banco Santander SA 2.5   Rheinmetall AG 2.4   Zurich Insurance Group AG 2.3   Mitsubishi UFJ Financial Group Inc 2.2   Sumitomo Mitsui Financial Group Inc 2.1   Roche Holding AG 2.1   BAE Systems PLC 2.0   Muenchener Rueckversicherungs-Gesellschaft AG in Muenchen 2.0     23.1  
Fidelity Advisor Canada Fund - Class Z  
Shareholder Report [Line Items]  
Fund Name Fidelity® Canada Fund
Class Name Fidelity Advisor® Canada Fund Class Z
Trading Symbol FIQEX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Canada Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class Z 
$ 43 
0.84%
  
Expenses Paid, Amount $ 43
Expense Ratio, Percent 0.84%
Net Assets $ 942,606,561
Holdings Count | shares 68
Investment Company Portfolio Turnover 12.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$942,606,561
  
Number of Holdings
68
  
Portfolio Turnover
12%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 28.2   Energy 15.6   Industrials 12.5   Materials 12.2   Information Technology 11.7   Consumer Staples 8.6   Consumer Discretionary 7.5   Communication Services 2.2   Health Care 0.8   Utilities 0.2     Common Stocks 99.0 Preferred Stocks 0.3 Bonds 0.2 Short-Term Investments and Net Other Assets (Liabilities) 0.5 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 99.0                       Preferred Stocks - 0.3                     Bonds - 0.2                                Short-Term Investments and Net Other Assets (Liabilities) - 0.5   Canada 92.7 United States 3.7 Brazil 3.0 Chile 0.5 Zambia 0.1 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Canada - 92.7                              United States - 3.7                        Brazil - 3.0                               Chile - 0.5                                Zambia - 0.1                                  
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Royal Bank of Canada 7.9   Constellation Software Inc/Canada 6.2   Canadian Pacific Kansas City Ltd 5.0   Alimentation Couche-Tard Inc 4.6   Franco-Nevada Corp 4.5   Toronto Dominion Bank 3.9   Shopify Inc Class A 3.8   Dollarama Inc 3.8   Canadian Natural Resources Ltd 3.7   PrairieSky Royalty Ltd 3.3     46.7  
Fidelity Emerging Markets Fund  
Shareholder Report [Line Items]  
Fund Name Fidelity® Emerging Markets Fund
Class Name Fidelity® Emerging Markets Fund
Trading Symbol FEMKX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Emerging Markets Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-800-544-8544
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Fidelity® Emerging Markets Fund 
$ 42 
0.87%
  
Expenses Paid, Amount $ 42
Expense Ratio, Percent 0.87%
Net Assets $ 6,926,988,734
Holdings Count | shares 79
Investment Company Portfolio Turnover 35.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$6,926,988,734
  
Number of Holdings
79
  
Portfolio Turnover
35%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Information Technology 25.5   Financials 19.7   Consumer Discretionary 15.0   Communication Services 12.7   Industrials 8.9   Energy 6.0   Health Care 4.4   Consumer Staples 4.3   Utilities 1.8   Real Estate 0.6   Materials 0.5     Common Stocks 98.8 Bonds 0.4 Preferred Stocks 0.2 Short-Term Investments and Net Other Assets (Liabilities) 0.6 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 98.8                       Bonds - 0.4                                Preferred Stocks - 0.2                     Short-Term Investments and Net Other Assets (Liabilities) - 0.6   China 25.4 India 19.5 Taiwan 15.7 Korea (South) 6.0 Brazil 5.9 United States 4.8 Mexico 3.0 France 2.9 Indonesia 2.9 Others 13.9 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     China - 25.4                               India - 19.5                               Taiwan - 15.7                              Korea (South) - 6.0                        Brazil - 5.9                               United States - 4.8                        Mexico - 3.0                               France - 2.9                               Indonesia - 2.9                            Others - 13.9                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Taiwan Semiconductor Manufacturing Co Ltd 13.2   Tencent Holdings Ltd 8.7   NVIDIA Corp 3.4   Alibaba Group Holding Ltd ADR 3.2   HDFC Bank Ltd 3.1   Bank Central Asia Tbk PT 2.9   PDD Holdings Inc Class A ADR 2.6   Samsung Electronics Co Ltd 2.5   Reliance Industries Ltd 2.1   SK Hynix Inc 2.1     43.8  
Fidelity Advisor Total International Equity Fund - Class A  
Shareholder Report [Line Items]  
Fund Name Fidelity® Total International Equity Fund
Class Name Fidelity Advisor® Total International Equity Fund Class A
Trading Symbol FTAEX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Total International Equity Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class A 
$ 61 
1.20%
  
Expenses Paid, Amount $ 61
Expense Ratio, Percent 1.20%
Net Assets $ 448,437,698
Holdings Count | shares 317
Investment Company Portfolio Turnover 42.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$448,437,698
  
Number of Holdings
317
  
Portfolio Turnover
42%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 27.2   Industrials 20.7   Information Technology 12.1   Materials 9.9   Consumer Discretionary 9.3   Communication Services 5.6   Health Care 4.8   Energy 3.9   Consumer Staples 3.4   Real Estate 0.2   Utilities 0.2     Common Stocks 97.2 Preferred Stocks 0.1 Short-Term Investments and Net Other Assets (Liabilities) 2.7 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 97.2                       Preferred Stocks - 0.1                     Short-Term Investments and Net Other Assets (Liabilities) - 2.7   United States 13.8 Japan 10.1 United Kingdom 9.8 China 9.7 Germany 7.3 Canada 7.2 France 7.1 Taiwan 3.7 Sweden 3.6 Others 27.7 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 13.8                       Japan - 10.1                               United Kingdom - 9.8                       China - 9.7                                Germany - 7.3                              Canada - 7.2                               France - 7.1                               Taiwan - 3.7                               Sweden - 3.6                               Others - 27.7                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Tencent Holdings Ltd 2.9   Taiwan Semiconductor Manufacturing Co Ltd 2.3   SAP SE 2.1   Samsung Electronics Co Ltd 1.8   CRH PLC 1.8   Safran SA 1.5   Linde PLC 1.4   BAE Systems PLC 1.3   Alibaba Group Holding Ltd ADR 1.1   Wal-Mart de Mexico SAB de CV Series V 1.1     17.3  
Fidelity Advisor Canada Fund - Class A  
Shareholder Report [Line Items]  
Fund Name Fidelity® Canada Fund
Class Name Fidelity Advisor® Canada Fund Class A
Trading Symbol FACNX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Canada Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class A 
$ 62 
1.22%
  
Expenses Paid, Amount $ 62
Expense Ratio, Percent 1.22%
Net Assets $ 942,606,561
Holdings Count | shares 68
Investment Company Portfolio Turnover 12.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$942,606,561
  
Number of Holdings
68
  
Portfolio Turnover
12%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 28.2   Energy 15.6   Industrials 12.5   Materials 12.2   Information Technology 11.7   Consumer Staples 8.6   Consumer Discretionary 7.5   Communication Services 2.2   Health Care 0.8   Utilities 0.2     Common Stocks 99.0 Preferred Stocks 0.3 Bonds 0.2 Short-Term Investments and Net Other Assets (Liabilities) 0.5 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 99.0                       Preferred Stocks - 0.3                     Bonds - 0.2                                Short-Term Investments and Net Other Assets (Liabilities) - 0.5   Canada 92.7 United States 3.7 Brazil 3.0 Chile 0.5 Zambia 0.1 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Canada - 92.7                              United States - 3.7                        Brazil - 3.0                               Chile - 0.5                                Zambia - 0.1                                  
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Royal Bank of Canada 7.9   Constellation Software Inc/Canada 6.2   Canadian Pacific Kansas City Ltd 5.0   Alimentation Couche-Tard Inc 4.6   Franco-Nevada Corp 4.5   Toronto Dominion Bank 3.9   Shopify Inc Class A 3.8   Dollarama Inc 3.8   Canadian Natural Resources Ltd 3.7   PrairieSky Royalty Ltd 3.3     46.7  
Fidelity Advisor International Growth Fund - Class Z  
Shareholder Report [Line Items]  
Fund Name Fidelity® International Growth Fund
Class Name Fidelity Advisor® International Growth Fund Class Z
Trading Symbol FZAJX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® International Growth Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class Z 
$ 39 
0.78%
  
Expenses Paid, Amount $ 39
Expense Ratio, Percent 0.78%
Net Assets $ 6,458,338,721
Holdings Count | shares 71
Investment Company Portfolio Turnover 31.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$6,458,338,721
  
Number of Holdings
71
  
Portfolio Turnover
31%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Industrials 34.2   Financials 17.9   Information Technology 17.2   Consumer Discretionary 10.0   Materials 9.5   Health Care 4.1   Communication Services 2.4   Energy 0.4   Consumer Staples 0.3     Common Stocks 95.8 Preferred Stocks 0.2 Short-Term Investments and Net Other Assets (Liabilities) 4.0 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 95.8                       Preferred Stocks - 0.2                     Short-Term Investments and Net Other Assets (Liabilities) - 4.0   United States 28.4 United Kingdom 14.4 France 12.5 Germany 9.1 Japan 8.8 Sweden 8.1 Netherlands 4.7 Switzerland 3.1 Canada 2.4 Others 8.5 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 28.4                       United Kingdom - 14.4                      France - 12.5                              Germany - 9.1                              Japan - 8.8                                Sweden - 8.1                               Netherlands - 4.7                          Switzerland - 3.1                          Canada - 2.4                               Others - 8.5                                  
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     SAP SE 6.8   Safran SA 4.6   CRH PLC 3.9   ASML Holding NV 3.5   Atlas Copco AB A Shares 3.5   Linde PLC 3.4   Compass Group PLC 3.1   Recruit Holdings Co Ltd 2.8   LVMH Moet Hennessy Louis Vuitton SE 2.6   Experian PLC 2.5     36.7  
Fidelity Diversified International Fund  
Shareholder Report [Line Items]  
Fund Name Fidelity® Diversified International Fund
Class Name Fidelity® Diversified International Fund
Trading Symbol FDIVX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Diversified International Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-800-544-8544
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Fidelity® Diversified International Fund 
$ 33 
0.64%
  
Expenses Paid, Amount $ 33
Expense Ratio, Percent 0.64%
Net Assets $ 11,737,421,933
Holdings Count | shares 138
Investment Company Portfolio Turnover 41.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$11,737,421,933
  
Number of Holdings
138
  
Portfolio Turnover
41%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 27.2   Industrials 27.0   Information Technology 10.7   Health Care 9.1   Materials 8.4   Consumer Discretionary 7.9   Energy 3.0   Communication Services 2.5   Consumer Staples 0.8     Common Stocks 96.1 Preferred Stocks 0.5 Short-Term Investments and Net Other Assets (Liabilities) 3.4 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 96.1                       Preferred Stocks - 0.5                     Short-Term Investments and Net Other Assets (Liabilities) - 3.4   Japan 17.6 United Kingdom 15.8 United States 14.5 Germany 11.9 France 9.3 Canada 4.9 Netherlands 4.3 Sweden 3.1 Italy 3.0 Others 15.6 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Japan - 17.6                               United Kingdom - 15.8                      United States - 14.5                       Germany - 11.9                             France - 9.3                               Canada - 4.9                               Netherlands - 4.3                          Sweden - 3.1                               Italy - 3.0                                Others - 15.6                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     SAP SE 2.7   Hitachi Ltd 2.6   Allianz SE 2.0   RELX PLC (Netherlands) 1.9   UniCredit SpA 1.9   London Stock Exchange Group PLC 1.8   Rolls-Royce Holdings PLC 1.7   Wolters Kluwer NV 1.6   Astrazeneca PLC 1.6   Mitsubishi Heavy Industries Ltd 1.6     19.4  
Fidelity Advisor China Region Fund - Class M  
Shareholder Report [Line Items]  
Fund Name Fidelity® China Region Fund
Class Name Fidelity Advisor® China Region Fund Class M
Trading Symbol FHKTX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® China Region Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class M 
$ 70 
1.43%
  
Expenses Paid, Amount $ 70
Expense Ratio, Percent 1.43%
Net Assets $ 1,096,792,327
Holdings Count | shares 76
Investment Company Portfolio Turnover 32.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$1,096,792,327
  
Number of Holdings
76
  
Portfolio Turnover
32%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Information Technology 30.9   Consumer Discretionary 22.4   Communication Services 17.2   Financials 13.2   Health Care 4.3   Materials 3.2   Industrials 2.8   Consumer Staples 2.7   Real Estate 1.1     Common Stocks 95.8 Preferred Stocks 2.0 Short-Term Investments and Net Other Assets (Liabilities) 2.2 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 95.8                       Preferred Stocks - 2.0                     Short-Term Investments and Net Other Assets (Liabilities) - 2.2   China 60.2 Taiwan 29.1 Hong Kong 4.1 United States 3.2 Singapore 1.4 Korea (South) 1.1 South Africa 0.5 France 0.4 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     China - 60.2                               Taiwan - 29.1                              Hong Kong - 4.1                            United States - 3.2                        Singapore - 1.4                            Korea (South) - 1.1                        South Africa - 0.5                         France - 0.4                                  
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Taiwan Semiconductor Manufacturing Co Ltd 21.7   Tencent Holdings Ltd 13.4   Alibaba Group Holding Ltd 6.6   PDD Holdings Inc Class A ADR 4.0   China Construction Bank Corp H Shares 3.4   AIA Group Ltd 3.2   Zijin Mining Group Co Ltd H Shares 2.6   Industrial & Commercial Bank of China Ltd H Shares 1.7   MediaTek Inc 1.6   Meituan B Shares 1.5     59.7  
Fidelity Advisor International Small Cap Fund - Class A  
Shareholder Report [Line Items]  
Fund Name Fidelity® International Small Cap Fund
Class Name Fidelity Advisor® International Small Cap Fund Class A
Trading Symbol FIASX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® International Small Cap Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class A 
$ 64 
1.25%
  
Expenses Paid, Amount $ 64
Expense Ratio, Percent 1.25%
Net Assets $ 4,896,590,377
Holdings Count | shares 199
Investment Company Portfolio Turnover 18.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$4,896,590,377
  
Number of Holdings
199
  
Portfolio Turnover
18%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Industrials 23.4   Financials 15.8   Consumer Staples 10.8   Consumer Discretionary 10.0   Materials 8.2   Information Technology 7.6   Health Care 6.0   Real Estate 5.8   Communication Services 4.6   Energy 3.5   Utilities 0.6     Common Stocks 96.3 Short-Term Investments and Net Other Assets (Liabilities) 3.7 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 96.3                       Short-Term Investments and Net Other Assets (Liabilities) - 3.7   Japan 22.3 United Kingdom 13.4 United States 6.6 Canada 4.1 Australia 3.8 Spain 3.6 China 3.5 Mexico 3.5 Italy 3.1 Others 36.1 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Japan - 22.3                               United Kingdom - 13.4                      United States - 6.6                        Canada - 4.1                               Australia - 3.8                            Spain - 3.6                                China - 3.5                                Mexico - 3.5                               Italy - 3.1                                Others - 36.1                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Logista Integral SA 1.1   BayCurrent Inc 1.1   Premier Foods PLC 1.1   Ashtead Technology Holdings plc 1.1   Metlen Energy & Metals SA 1.0   Grupo Catalana Occidente SA 1.0   Century Pacific Food Inc 1.0   Richter Gedeon Nyrt 0.9   Spar Nord Bank A/S 0.9   Qualitas Controladora SAB de CV 0.9     10.1  
Fidelity Advisor Europe Fund - Class Z  
Shareholder Report [Line Items]  
Fund Name Fidelity® Europe Fund
Class Name Fidelity Advisor® Europe Fund Class Z
Trading Symbol FIQHX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Europe Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class Z 
$ 32 
0.61%
  
Expenses Paid, Amount $ 32
Expense Ratio, Percent 0.61%
Net Assets $ 738,937,264
Holdings Count | shares 103
Investment Company Portfolio Turnover 42.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$738,937,264
  
Number of Holdings
103
  
Portfolio Turnover
42%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 23.8   Industrials 17.3   Consumer Discretionary 11.5   Health Care 10.1   Information Technology 10.1   Consumer Staples 8.1   Communication Services 7.1   Materials 3.7   Energy 3.6   Real Estate 0.8   Utilities 0.8     Common Stocks 96.8 Preferred Stocks 0.1 Short-Term Investments and Net Other Assets (Liabilities) 3.1 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 96.8                       Preferred Stocks - 0.1                     Short-Term Investments and Net Other Assets (Liabilities) - 3.1   United Kingdom 23.6 Germany 18.4 France 14.9 United States 10.7 Italy 6.5 Sweden 5.4 Netherlands 4.1 Switzerland 3.3 Spain 2.5 Others 10.6 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United Kingdom - 23.6                      Germany - 18.4                             France - 14.9                              United States - 10.7                       Italy - 6.5                                Sweden - 5.4                               Netherlands - 4.1                          Switzerland - 3.3                          Spain - 2.5                                Others - 10.6                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     SAP SE 4.3   Astrazeneca PLC 3.1   RELX PLC 2.6   ASML Holding NV 2.4   Shell PLC 2.3   Rheinmetall AG 2.3   Rolls-Royce Holdings PLC 2.1   UniCredit SpA 1.9   Siemens AG 1.8   Air Liquide SA 1.8     24.6  
Fidelity Advisor International Value Fund - Class Z  
Shareholder Report [Line Items]  
Fund Name Fidelity® International Value Fund
Class Name Fidelity Advisor® International Value Fund Class Z
Trading Symbol FIQKX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® International Value Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class Z 
$ 39 
0.73%
  
Expenses Paid, Amount $ 39
Expense Ratio, Percent 0.73%
Net Assets $ 2,052,754,816
Holdings Count | shares 107
Investment Company Portfolio Turnover 34.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$2,052,754,816
  
Number of Holdings
107
  
Portfolio Turnover
34%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 38.8   Industrials 15.4   Materials 10.2   Energy 6.2   Health Care 5.9   Consumer Discretionary 5.1   Consumer Staples 3.8   Communication Services 3.3   Information Technology 2.7   Utilities 0.7   Real Estate 0.5     Common Stocks 92.4 Preferred Stocks 0.2 Short-Term Investments and Net Other Assets (Liabilities) 7.4 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 92.4                       Preferred Stocks - 0.2                     Short-Term Investments and Net Other Assets (Liabilities) - 7.4   Japan 20.3 United States 17.1 United Kingdom 13.7 Germany 13.4 France 9.8 Italy 4.9 Switzerland 3.7 Australia 3.4 Spain 3.1 Others 10.6 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Japan - 20.3                               United States - 17.1                       United Kingdom - 13.7                      Germany - 13.4                             France - 9.8                               Italy - 4.9                                Switzerland - 3.7                          Australia - 3.4                            Spain - 3.1                                Others - 10.6                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Shell PLC ADR 2.9   AXA SA 2.6   Banco Santander SA 2.5   Rheinmetall AG 2.4   Zurich Insurance Group AG 2.3   Mitsubishi UFJ Financial Group Inc 2.2   Sumitomo Mitsui Financial Group Inc 2.1   Roche Holding AG 2.1   BAE Systems PLC 2.0   Muenchener Rueckversicherungs-Gesellschaft AG in Muenchen 2.0     23.1  
Fidelity Advisor Emerging Markets Fund - Class A  
Shareholder Report [Line Items]  
Fund Name Fidelity® Emerging Markets Fund
Class Name Fidelity Advisor® Emerging Markets Fund Class A
Trading Symbol FEDMX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Emerging Markets Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class A 
$ 55 
1.14%
  
Expenses Paid, Amount $ 55
Expense Ratio, Percent 1.14%
Net Assets $ 6,926,988,734
Holdings Count | shares 79
Investment Company Portfolio Turnover 35.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$6,926,988,734
  
Number of Holdings
79
  
Portfolio Turnover
35%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Information Technology 25.5   Financials 19.7   Consumer Discretionary 15.0   Communication Services 12.7   Industrials 8.9   Energy 6.0   Health Care 4.4   Consumer Staples 4.3   Utilities 1.8   Real Estate 0.6   Materials 0.5     Common Stocks 98.8 Bonds 0.4 Preferred Stocks 0.2 Short-Term Investments and Net Other Assets (Liabilities) 0.6 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 98.8                       Bonds - 0.4                                Preferred Stocks - 0.2                     Short-Term Investments and Net Other Assets (Liabilities) - 0.6   China 25.4 India 19.5 Taiwan 15.7 Korea (South) 6.0 Brazil 5.9 United States 4.8 Mexico 3.0 France 2.9 Indonesia 2.9 Others 13.9 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     China - 25.4                               India - 19.5                               Taiwan - 15.7                              Korea (South) - 6.0                        Brazil - 5.9                               United States - 4.8                        Mexico - 3.0                               France - 2.9                               Indonesia - 2.9                            Others - 13.9                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Taiwan Semiconductor Manufacturing Co Ltd 13.2   Tencent Holdings Ltd 8.7   NVIDIA Corp 3.4   Alibaba Group Holding Ltd ADR 3.2   HDFC Bank Ltd 3.1   Bank Central Asia Tbk PT 2.9   PDD Holdings Inc Class A ADR 2.6   Samsung Electronics Co Ltd 2.5   Reliance Industries Ltd 2.1   SK Hynix Inc 2.1     43.8  
Fidelity Advisor Worldwide Fund - Class Z  
Shareholder Report [Line Items]  
Fund Name Fidelity® Worldwide Fund
Class Name Fidelity Advisor® Worldwide Fund Class Z
Trading Symbol FIQOX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Worldwide Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class Z 
$ 31 
0.65%
  
Expenses Paid, Amount $ 31
Expense Ratio, Percent 0.65%
Net Assets $ 2,906,574,043
Holdings Count | shares 165
Investment Company Portfolio Turnover 163.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$2,906,574,043
  
Number of Holdings
165
  
Portfolio Turnover
163%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Information Technology 19.3   Consumer Discretionary 16.3   Financials 15.4   Communication Services 12.9   Health Care 8.6   Industrials 7.1   Consumer Staples 5.6   Real Estate 3.8   Energy 3.2   Materials 2.1   Utilities 2.0     Common Stocks 96.1 Preferred Stocks 0.2 Short-Term Investments and Net Other Assets (Liabilities) 3.7 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 96.1                       Preferred Stocks - 0.2                     Short-Term Investments and Net Other Assets (Liabilities) - 3.7   United States 65.2 United Kingdom 5.0 Japan 3.8 Canada 3.6 Sweden 3.2 Spain 2.0 Netherlands 1.7 Italy 1.7 France 1.5 Others 12.3 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 65.2                       United Kingdom - 5.0                       Japan - 3.8                                Canada - 3.6                               Sweden - 3.2                               Spain - 2.0                                Netherlands - 1.7                          Italy - 1.7                                France - 1.5                               Others - 12.3                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Amazon.com Inc 4.1   NVIDIA Corp 4.0   Meta Platforms Inc Class A 3.5   Microsoft Corp 3.1   Robinhood Markets Inc Class A 2.9   Apple Inc 2.6   Alphabet Inc Class A 2.6   Kyndryl Holdings Inc 2.5   Prologis Inc 2.1   DraftKings Inc Class A 2.0     29.4  
Fidelity International Small Cap Fund  
Shareholder Report [Line Items]  
Fund Name Fidelity® International Small Cap Fund
Class Name Fidelity® International Small Cap Fund
Trading Symbol FISMX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® International Small Cap Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-800-544-8544
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Fidelity® International Small Cap Fund 
$ 49 
0.95%
  
Expenses Paid, Amount $ 49
Expense Ratio, Percent 0.95%
Net Assets $ 4,896,590,377
Holdings Count | shares 199
Investment Company Portfolio Turnover 18.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$4,896,590,377
  
Number of Holdings
199
  
Portfolio Turnover
18%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Industrials 23.4   Financials 15.8   Consumer Staples 10.8   Consumer Discretionary 10.0   Materials 8.2   Information Technology 7.6   Health Care 6.0   Real Estate 5.8   Communication Services 4.6   Energy 3.5   Utilities 0.6     Common Stocks 96.3 Short-Term Investments and Net Other Assets (Liabilities) 3.7 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 96.3                       Short-Term Investments and Net Other Assets (Liabilities) - 3.7   Japan 22.3 United Kingdom 13.4 United States 6.6 Canada 4.1 Australia 3.8 Spain 3.6 China 3.5 Mexico 3.5 Italy 3.1 Others 36.1 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Japan - 22.3                               United Kingdom - 13.4                      United States - 6.6                        Canada - 4.1                               Australia - 3.8                            Spain - 3.6                                China - 3.5                                Mexico - 3.5                               Italy - 3.1                                Others - 36.1                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Logista Integral SA 1.1   BayCurrent Inc 1.1   Premier Foods PLC 1.1   Ashtead Technology Holdings plc 1.1   Metlen Energy & Metals SA 1.0   Grupo Catalana Occidente SA 1.0   Century Pacific Food Inc 1.0   Richter Gedeon Nyrt 0.9   Spar Nord Bank A/S 0.9   Qualitas Controladora SAB de CV 0.9     10.1  
Fidelity Advisor Emerging Markets Fund - Class M  
Shareholder Report [Line Items]  
Fund Name Fidelity® Emerging Markets Fund
Class Name Fidelity Advisor® Emerging Markets Fund Class M
Trading Symbol FEQMX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Emerging Markets Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class M 
$ 67 
1.39%
  
Expenses Paid, Amount $ 67
Expense Ratio, Percent 1.39%
Net Assets $ 6,926,988,734
Holdings Count | shares 79
Investment Company Portfolio Turnover 35.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$6,926,988,734
  
Number of Holdings
79
  
Portfolio Turnover
35%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Information Technology 25.5   Financials 19.7   Consumer Discretionary 15.0   Communication Services 12.7   Industrials 8.9   Energy 6.0   Health Care 4.4   Consumer Staples 4.3   Utilities 1.8   Real Estate 0.6   Materials 0.5     Common Stocks 98.8 Bonds 0.4 Preferred Stocks 0.2 Short-Term Investments and Net Other Assets (Liabilities) 0.6 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 98.8                       Bonds - 0.4                                Preferred Stocks - 0.2                     Short-Term Investments and Net Other Assets (Liabilities) - 0.6   China 25.4 India 19.5 Taiwan 15.7 Korea (South) 6.0 Brazil 5.9 United States 4.8 Mexico 3.0 France 2.9 Indonesia 2.9 Others 13.9 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     China - 25.4                               India - 19.5                               Taiwan - 15.7                              Korea (South) - 6.0                        Brazil - 5.9                               United States - 4.8                        Mexico - 3.0                               France - 2.9                               Indonesia - 2.9                            Others - 13.9                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Taiwan Semiconductor Manufacturing Co Ltd 13.2   Tencent Holdings Ltd 8.7   NVIDIA Corp 3.4   Alibaba Group Holding Ltd ADR 3.2   HDFC Bank Ltd 3.1   Bank Central Asia Tbk PT 2.9   PDD Holdings Inc Class A ADR 2.6   Samsung Electronics Co Ltd 2.5   Reliance Industries Ltd 2.1   SK Hynix Inc 2.1     43.8  
Fidelity Advisor International Small Cap Fund - Class M  
Shareholder Report [Line Items]  
Fund Name Fidelity® International Small Cap Fund
Class Name Fidelity Advisor® International Small Cap Fund Class M
Trading Symbol FTISX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® International Small Cap Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class M 
$ 77 
1.50%
  
Expenses Paid, Amount $ 77
Expense Ratio, Percent 1.50%
Net Assets $ 4,896,590,377
Holdings Count | shares 199
Investment Company Portfolio Turnover 18.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$4,896,590,377
  
Number of Holdings
199
  
Portfolio Turnover
18%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Industrials 23.4   Financials 15.8   Consumer Staples 10.8   Consumer Discretionary 10.0   Materials 8.2   Information Technology 7.6   Health Care 6.0   Real Estate 5.8   Communication Services 4.6   Energy 3.5   Utilities 0.6     Common Stocks 96.3 Short-Term Investments and Net Other Assets (Liabilities) 3.7 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 96.3                       Short-Term Investments and Net Other Assets (Liabilities) - 3.7   Japan 22.3 United Kingdom 13.4 United States 6.6 Canada 4.1 Australia 3.8 Spain 3.6 China 3.5 Mexico 3.5 Italy 3.1 Others 36.1 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Japan - 22.3                               United Kingdom - 13.4                      United States - 6.6                        Canada - 4.1                               Australia - 3.8                            Spain - 3.6                                China - 3.5                                Mexico - 3.5                               Italy - 3.1                                Others - 36.1                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Logista Integral SA 1.1   BayCurrent Inc 1.1   Premier Foods PLC 1.1   Ashtead Technology Holdings plc 1.1   Metlen Energy & Metals SA 1.0   Grupo Catalana Occidente SA 1.0   Century Pacific Food Inc 1.0   Richter Gedeon Nyrt 0.9   Spar Nord Bank A/S 0.9   Qualitas Controladora SAB de CV 0.9     10.1  
Fidelity Advisor China Region Fund - Class I  
Shareholder Report [Line Items]  
Fund Name Fidelity® China Region Fund
Class Name Fidelity Advisor® China Region Fund Class I
Trading Symbol FHKIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® China Region Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class I 
$ 44 
0.90%
  
Expenses Paid, Amount $ 44
Expense Ratio, Percent 0.90%
Net Assets $ 1,096,792,327
Holdings Count | shares 76
Investment Company Portfolio Turnover 32.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$1,096,792,327
  
Number of Holdings
76
  
Portfolio Turnover
32%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Information Technology 30.9   Consumer Discretionary 22.4   Communication Services 17.2   Financials 13.2   Health Care 4.3   Materials 3.2   Industrials 2.8   Consumer Staples 2.7   Real Estate 1.1     Common Stocks 95.8 Preferred Stocks 2.0 Short-Term Investments and Net Other Assets (Liabilities) 2.2 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 95.8                       Preferred Stocks - 2.0                     Short-Term Investments and Net Other Assets (Liabilities) - 2.2   China 60.2 Taiwan 29.1 Hong Kong 4.1 United States 3.2 Singapore 1.4 Korea (South) 1.1 South Africa 0.5 France 0.4 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     China - 60.2                               Taiwan - 29.1                              Hong Kong - 4.1                            United States - 3.2                        Singapore - 1.4                            Korea (South) - 1.1                        South Africa - 0.5                         France - 0.4                                  
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Taiwan Semiconductor Manufacturing Co Ltd 21.7   Tencent Holdings Ltd 13.4   Alibaba Group Holding Ltd 6.6   PDD Holdings Inc Class A ADR 4.0   China Construction Bank Corp H Shares 3.4   AIA Group Ltd 3.2   Zijin Mining Group Co Ltd H Shares 2.6   Industrial & Commercial Bank of China Ltd H Shares 1.7   MediaTek Inc 1.6   Meituan B Shares 1.5     59.7  
Fidelity Advisor Japan Fund - Class C  
Shareholder Report [Line Items]  
Fund Name Fidelity® Japan Fund
Class Name Fidelity Advisor® Japan Fund Class C
Trading Symbol FJPCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Japan Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class C 
$ 87 
1.73%
  
Expenses Paid, Amount $ 87
Expense Ratio, Percent 1.73%
Net Assets $ 710,338,465
Holdings Count | shares 86
Investment Company Portfolio Turnover 31.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$710,338,465
  
Number of Holdings
86
  
Portfolio Turnover
31%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Industrials 28.4   Information Technology 19.0   Financials 15.1   Consumer Discretionary 11.6   Communication Services 6.8   Materials 6.4   Health Care 5.5   Consumer Staples 2.5   Real Estate 1.1   Energy 1.0     Common Stocks 97.4 Short-Term Investments and Net Other Assets (Liabilities) 2.6 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 97.4                       Short-Term Investments and Net Other Assets (Liabilities) - 2.6   Japan 96.7 United States 3.1 China 0.2 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Japan - 96.7                               United States - 3.1                        China - 0.2                                   
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Sumitomo Mitsui Financial Group Inc 6.4   Sony Group Corp 5.1   Hitachi Ltd 4.8   Fujitsu Ltd 3.0   Tokio Marine Holdings Inc 2.9   Hoya Corp 2.9   ORIX Corp 2.8   Nintendo Co Ltd 2.8   Shin-Etsu Chemical Co Ltd 2.7   FUJIFILM Holdings Corp 2.5     35.9  
Fidelity Emerging Markets Fund - Class K  
Shareholder Report [Line Items]  
Fund Name Fidelity® Emerging Markets Fund
Class Name Fidelity® Emerging Markets Fund Class K
Trading Symbol FKEMX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Emerging Markets Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-800-835-5092
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class K 
$ 36 
0.74%
  
Expenses Paid, Amount $ 36
Expense Ratio, Percent 0.74%
Net Assets $ 6,926,988,734
Holdings Count | shares 79
Investment Company Portfolio Turnover 35.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$6,926,988,734
  
Number of Holdings
79
  
Portfolio Turnover
35%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Information Technology 25.5   Financials 19.7   Consumer Discretionary 15.0   Communication Services 12.7   Industrials 8.9   Energy 6.0   Health Care 4.4   Consumer Staples 4.3   Utilities 1.8   Real Estate 0.6   Materials 0.5     Common Stocks 98.8 Bonds 0.4 Preferred Stocks 0.2 Short-Term Investments and Net Other Assets (Liabilities) 0.6 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 98.8                       Bonds - 0.4                                Preferred Stocks - 0.2                     Short-Term Investments and Net Other Assets (Liabilities) - 0.6   China 25.4 India 19.5 Taiwan 15.7 Korea (South) 6.0 Brazil 5.9 United States 4.8 Mexico 3.0 France 2.9 Indonesia 2.9 Others 13.9 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     China - 25.4                               India - 19.5                               Taiwan - 15.7                              Korea (South) - 6.0                        Brazil - 5.9                               United States - 4.8                        Mexico - 3.0                               France - 2.9                               Indonesia - 2.9                            Others - 13.9                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Taiwan Semiconductor Manufacturing Co Ltd 13.2   Tencent Holdings Ltd 8.7   NVIDIA Corp 3.4   Alibaba Group Holding Ltd ADR 3.2   HDFC Bank Ltd 3.1   Bank Central Asia Tbk PT 2.9   PDD Holdings Inc Class A ADR 2.6   Samsung Electronics Co Ltd 2.5   Reliance Industries Ltd 2.1   SK Hynix Inc 2.1     43.8  
Fidelity Advisor Emerging Markets Fund - Class I  
Shareholder Report [Line Items]  
Fund Name Fidelity® Emerging Markets Fund
Class Name Fidelity Advisor® Emerging Markets Fund Class I
Trading Symbol FECMX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Emerging Markets Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class I 
$ 43 
0.88%
  
Expenses Paid, Amount $ 43
Expense Ratio, Percent 0.88%
Net Assets $ 6,926,988,734
Holdings Count | shares 79
Investment Company Portfolio Turnover 35.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$6,926,988,734
  
Number of Holdings
79
  
Portfolio Turnover
35%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Information Technology 25.5   Financials 19.7   Consumer Discretionary 15.0   Communication Services 12.7   Industrials 8.9   Energy 6.0   Health Care 4.4   Consumer Staples 4.3   Utilities 1.8   Real Estate 0.6   Materials 0.5     Common Stocks 98.8 Bonds 0.4 Preferred Stocks 0.2 Short-Term Investments and Net Other Assets (Liabilities) 0.6 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 98.8                       Bonds - 0.4                                Preferred Stocks - 0.2                     Short-Term Investments and Net Other Assets (Liabilities) - 0.6   China 25.4 India 19.5 Taiwan 15.7 Korea (South) 6.0 Brazil 5.9 United States 4.8 Mexico 3.0 France 2.9 Indonesia 2.9 Others 13.9 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     China - 25.4                               India - 19.5                               Taiwan - 15.7                              Korea (South) - 6.0                        Brazil - 5.9                               United States - 4.8                        Mexico - 3.0                               France - 2.9                               Indonesia - 2.9                            Others - 13.9                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Taiwan Semiconductor Manufacturing Co Ltd 13.2   Tencent Holdings Ltd 8.7   NVIDIA Corp 3.4   Alibaba Group Holding Ltd ADR 3.2   HDFC Bank Ltd 3.1   Bank Central Asia Tbk PT 2.9   PDD Holdings Inc Class A ADR 2.6   Samsung Electronics Co Ltd 2.5   Reliance Industries Ltd 2.1   SK Hynix Inc 2.1     43.8  
Fidelity Advisor Emerging Markets Discovery Fund - Class Z  
Shareholder Report [Line Items]  
Fund Name Fidelity® Emerging Markets Discovery Fund
Class Name Fidelity Advisor® Emerging Markets Discovery Fund Class Z
Trading Symbol FIQGX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Emerging Markets Discovery Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class Z 
$ 45 
0.90%
  
Expenses Paid, Amount $ 45
Expense Ratio, Percent 0.90%
Net Assets $ 1,026,456,466
Holdings Count | shares 103
Investment Company Portfolio Turnover 38.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$1,026,456,466
  
Number of Holdings
103
  
Portfolio Turnover
38%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Industrials 22.1   Financials 18.6   Consumer Discretionary 16.1   Consumer Staples 10.9   Information Technology 10.3   Health Care 4.7   Real Estate 4.3   Communication Services 3.6   Energy 2.9   Utilities 2.4   Materials 2.1     Common Stocks 98.0 Short-Term Investments and Net Other Assets (Liabilities) 2.0 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 98.0                       Short-Term Investments and Net Other Assets (Liabilities) - 2.0   Taiwan 17.8 China 17.5 Brazil 13.1 India 11.9 Korea (South) 7.6 Mexico 5.5 Indonesia 4.1 United States 3.3 Poland 2.7 Others 16.5 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Taiwan - 17.8                              China - 17.5                               Brazil - 13.1                              India - 11.9                               Korea (South) - 7.6                        Mexico - 5.5                               Indonesia - 4.1                            United States - 3.3                        Poland - 2.7                               Others - 16.5                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     OPAP SA 1.7   Localiza Rent a Car SA 1.6   Lion Finance Group PLC 1.5   Dino Polska SA 1.5   Max Healthcare Institute Ltd 1.4   Qualitas Controladora SAB de CV 1.4   Eicher Motors Ltd 1.3   Equatorial Energia SA 1.3   Shriram Finance Ltd 1.3   Banco de Chile ADR 1.3     14.3  
Fidelity Advisor Worldwide Fund - Class A  
Shareholder Report [Line Items]  
Fund Name Fidelity® Worldwide Fund
Class Name Fidelity Advisor® Worldwide Fund Class A
Trading Symbol FWAFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Worldwide Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class A 
$ 49 
1.03%
  
Expenses Paid, Amount $ 49
Expense Ratio, Percent 1.03%
Net Assets $ 2,906,574,043
Holdings Count | shares 165
Investment Company Portfolio Turnover 163.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$2,906,574,043
  
Number of Holdings
165
  
Portfolio Turnover
163%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Information Technology 19.3   Consumer Discretionary 16.3   Financials 15.4   Communication Services 12.9   Health Care 8.6   Industrials 7.1   Consumer Staples 5.6   Real Estate 3.8   Energy 3.2   Materials 2.1   Utilities 2.0     Common Stocks 96.1 Preferred Stocks 0.2 Short-Term Investments and Net Other Assets (Liabilities) 3.7 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 96.1                       Preferred Stocks - 0.2                     Short-Term Investments and Net Other Assets (Liabilities) - 3.7   United States 65.2 United Kingdom 5.0 Japan 3.8 Canada 3.6 Sweden 3.2 Spain 2.0 Netherlands 1.7 Italy 1.7 France 1.5 Others 12.3 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 65.2                       United Kingdom - 5.0                       Japan - 3.8                                Canada - 3.6                               Sweden - 3.2                               Spain - 2.0                                Netherlands - 1.7                          Italy - 1.7                                France - 1.5                               Others - 12.3                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Amazon.com Inc 4.1   NVIDIA Corp 4.0   Meta Platforms Inc Class A 3.5   Microsoft Corp 3.1   Robinhood Markets Inc Class A 2.9   Apple Inc 2.6   Alphabet Inc Class A 2.6   Kyndryl Holdings Inc 2.5   Prologis Inc 2.1   DraftKings Inc Class A 2.0     29.4  
Fidelity Advisor Emerging Markets Discovery Fund - Class M  
Shareholder Report [Line Items]  
Fund Name Fidelity® Emerging Markets Discovery Fund
Class Name Fidelity Advisor® Emerging Markets Discovery Fund Class M
Trading Symbol FEDTX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Emerging Markets Discovery Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class M 
$ 76 
1.52%
  
Expenses Paid, Amount $ 76
Expense Ratio, Percent 1.52%
Net Assets $ 1,026,456,466
Holdings Count | shares 103
Investment Company Portfolio Turnover 38.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$1,026,456,466
  
Number of Holdings
103
  
Portfolio Turnover
38%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Industrials 22.1   Financials 18.6   Consumer Discretionary 16.1   Consumer Staples 10.9   Information Technology 10.3   Health Care 4.7   Real Estate 4.3   Communication Services 3.6   Energy 2.9   Utilities 2.4   Materials 2.1     Common Stocks 98.0 Short-Term Investments and Net Other Assets (Liabilities) 2.0 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 98.0                       Short-Term Investments and Net Other Assets (Liabilities) - 2.0   Taiwan 17.8 China 17.5 Brazil 13.1 India 11.9 Korea (South) 7.6 Mexico 5.5 Indonesia 4.1 United States 3.3 Poland 2.7 Others 16.5 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Taiwan - 17.8                              China - 17.5                               Brazil - 13.1                              India - 11.9                               Korea (South) - 7.6                        Mexico - 5.5                               Indonesia - 4.1                            United States - 3.3                        Poland - 2.7                               Others - 16.5                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     OPAP SA 1.7   Localiza Rent a Car SA 1.6   Lion Finance Group PLC 1.5   Dino Polska SA 1.5   Max Healthcare Institute Ltd 1.4   Qualitas Controladora SAB de CV 1.4   Eicher Motors Ltd 1.3   Equatorial Energia SA 1.3   Shriram Finance Ltd 1.3   Banco de Chile ADR 1.3     14.3  
Fidelity Advisor Global Equity Income Fund - Class I  
Shareholder Report [Line Items]  
Fund Name Fidelity® Global Equity Income Fund
Class Name Fidelity Advisor® Global Equity Income Fund Class I
Trading Symbol FGEJX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Global Equity Income Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class I 
$ 47 
0.93%
  
Expenses Paid, Amount $ 47
Expense Ratio, Percent 0.93%
Net Assets $ 292,744,990
Holdings Count | shares 151
Investment Company Portfolio Turnover 12.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$292,744,990
  
Number of Holdings
151
  
Portfolio Turnover
12%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Information Technology 18.1   Industrials 15.2   Financials 14.2   Health Care 11.3   Consumer Discretionary 9.7   Consumer Staples 9.3   Communication Services 7.5   Energy 4.7   Utilities 4.1   Materials 3.6   Real Estate 1.1     Common Stocks 98.8 Short-Term Investments and Net Other Assets (Liabilities) 1.2 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 98.8                       Short-Term Investments and Net Other Assets (Liabilities) - 1.2   United States 58.7 United Kingdom 7.6 Germany 7.1 Japan 6.0 Canada 4.9 France 3.4 Taiwan 2.3 Netherlands 1.6 Ireland 1.5 Others 6.9 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 58.7                       United Kingdom - 7.6                       Germany - 7.1                              Japan - 6.0                                Canada - 4.9                               France - 3.4                               Taiwan - 2.3                               Netherlands - 1.6                          Ireland - 1.5                              Others - 6.9                                  
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Rheinmetall AG 5.2   Apple Inc 4.6   Microsoft Corp 4.2   Taiwan Semiconductor Manufacturing Co Ltd 2.3   JPMorgan Chase & Co 1.8   AbbVie Inc 1.6   NXP Semiconductors NV 1.6   T-Mobile US Inc 1.5   Eli Lilly & Co 1.4   Linde PLC 1.4     25.6  
Fidelity International Small Cap Opportunities Fund  
Shareholder Report [Line Items]  
Fund Name Fidelity® International Small Cap Opportunities Fund
Class Name Fidelity® International Small Cap Opportunities Fund
Trading Symbol FSCOX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® International Small Cap Opportunities Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-800-544-8544
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Fidelity® International Small Cap Opportunities Fund 
$ 49 
0.94%
  
Expenses Paid, Amount $ 49
Expense Ratio, Percent 0.94%
Net Assets $ 1,340,297,691
Holdings Count | shares 115
Investment Company Portfolio Turnover 30.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$1,340,297,691
  
Number of Holdings
115
  
Portfolio Turnover
30%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Industrials 30.2   Information Technology 21.0   Consumer Discretionary 11.2   Communication Services 7.8   Financials 6.0   Materials 4.5   Health Care 3.7   Consumer Staples 3.2   Real Estate 2.8   Energy 1.1     Common Stocks 91.5 International Equity Funds 4.9 Short-Term Investments and Net Other Assets (Liabilities) 3.6 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 91.5                       International Equity Funds - 4.9           Short-Term Investments and Net Other Assets (Liabilities) - 3.6   Japan 26.5 United Kingdom 15.1 Sweden 14.1 United States 10.9 Germany 5.5 Netherlands 4.7 Canada 4.0 Belgium 2.6 France 2.5 Others 14.1 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Japan - 26.5                               United Kingdom - 15.1                      Sweden - 14.1                              United States - 10.9                       Germany - 5.5                              Netherlands - 4.7                          Canada - 4.0                               Belgium - 2.6                              France - 2.5                               Others - 14.1                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Lagercrantz Group AB B Shares 5.2   iShares MSCI EAFE Small-Cap ETF 4.9   AddTech AB B Shares 4.7   Azbil Corp 3.5   CTS Eventim AG & Co KGaA 2.7   Games Workshop Group PLC 2.2   KBC Ancora 2.1   Interpump Group SpA 2.1   Spectris PLC 2.1   Howden Joinery Group PLC 2.0     31.5  
Fidelity China Region Fund  
Shareholder Report [Line Items]  
Fund Name Fidelity® China Region Fund
Class Name Fidelity® China Region Fund
Trading Symbol FHKCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® China Region Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-800-544-8544
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Fidelity® China Region Fund 
$ 45 
0.91%
  
Expenses Paid, Amount $ 45
Expense Ratio, Percent 0.91%
Net Assets $ 1,096,792,327
Holdings Count | shares 76
Investment Company Portfolio Turnover 32.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$1,096,792,327
  
Number of Holdings
76
  
Portfolio Turnover
32%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Information Technology 30.9   Consumer Discretionary 22.4   Communication Services 17.2   Financials 13.2   Health Care 4.3   Materials 3.2   Industrials 2.8   Consumer Staples 2.7   Real Estate 1.1     Common Stocks 95.8 Preferred Stocks 2.0 Short-Term Investments and Net Other Assets (Liabilities) 2.2 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 95.8                       Preferred Stocks - 2.0                     Short-Term Investments and Net Other Assets (Liabilities) - 2.2   China 60.2 Taiwan 29.1 Hong Kong 4.1 United States 3.2 Singapore 1.4 Korea (South) 1.1 South Africa 0.5 France 0.4 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     China - 60.2                               Taiwan - 29.1                              Hong Kong - 4.1                            United States - 3.2                        Singapore - 1.4                            Korea (South) - 1.1                        South Africa - 0.5                         France - 0.4                                  
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Taiwan Semiconductor Manufacturing Co Ltd 21.7   Tencent Holdings Ltd 13.4   Alibaba Group Holding Ltd 6.6   PDD Holdings Inc Class A ADR 4.0   China Construction Bank Corp H Shares 3.4   AIA Group Ltd 3.2   Zijin Mining Group Co Ltd H Shares 2.6   Industrial & Commercial Bank of China Ltd H Shares 1.7   MediaTek Inc 1.6   Meituan B Shares 1.5     59.7  
Fidelity Advisor International Discovery Fund - Class I  
Shareholder Report [Line Items]  
Fund Name Fidelity® International Discovery Fund
Class Name Fidelity Advisor® International Discovery Fund Class I
Trading Symbol FIADX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® International Discovery Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class I 
$ 34 
0.66%
  
Expenses Paid, Amount $ 34
Expense Ratio, Percent 0.66%
Net Assets $ 10,296,192,153
Holdings Count | shares 135
Investment Company Portfolio Turnover 52.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$10,296,192,153
  
Number of Holdings
135
  
Portfolio Turnover
52%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 25.7   Industrials 23.4   Consumer Discretionary 13.0   Information Technology 12.9   Health Care 7.3   Communication Services 6.7   Materials 3.4   Consumer Staples 2.3   Energy 1.1     Common Stocks 94.9 Preferred Stocks 0.9 Short-Term Investments and Net Other Assets (Liabilities) 4.2 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 94.9                       Preferred Stocks - 0.9                     Short-Term Investments and Net Other Assets (Liabilities) - 4.2   United Kingdom 17.6 Japan 16.1 France 9.9 Germany 9.6 United States 9.0 Italy 5.7 Netherlands 5.7 Canada 3.7 Sweden 3.6 Others 19.1 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United Kingdom - 17.6                      Japan - 16.1                               France - 9.9                               Germany - 9.6                              United States - 9.0                        Italy - 5.7                                Netherlands - 5.7                          Canada - 3.7                               Sweden - 3.6                               Others - 19.1                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     UniCredit SpA 3.4   Rheinmetall AG 2.9   SAP SE 2.8   Hitachi Ltd 2.8   Constellation Software Inc/Canada 2.4   AXA SA 2.3   London Stock Exchange Group PLC 2.1   3i Group PLC 2.0   RELX PLC 1.9   Taiwan Semiconductor Manufacturing Co Ltd 1.9     24.5  
Fidelity Advisor International Discovery Fund - Class M  
Shareholder Report [Line Items]  
Fund Name Fidelity® International Discovery Fund
Class Name Fidelity Advisor® International Discovery Fund Class M
Trading Symbol FTADX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® International Discovery Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class M 
$ 60 
1.16%
  
Expenses Paid, Amount $ 60
Expense Ratio, Percent 1.16%
Net Assets $ 10,296,192,153
Holdings Count | shares 135
Investment Company Portfolio Turnover 52.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$10,296,192,153
  
Number of Holdings
135
  
Portfolio Turnover
52%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 25.7   Industrials 23.4   Consumer Discretionary 13.0   Information Technology 12.9   Health Care 7.3   Communication Services 6.7   Materials 3.4   Consumer Staples 2.3   Energy 1.1     Common Stocks 94.9 Preferred Stocks 0.9 Short-Term Investments and Net Other Assets (Liabilities) 4.2 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 94.9                       Preferred Stocks - 0.9                     Short-Term Investments and Net Other Assets (Liabilities) - 4.2   United Kingdom 17.6 Japan 16.1 France 9.9 Germany 9.6 United States 9.0 Italy 5.7 Netherlands 5.7 Canada 3.7 Sweden 3.6 Others 19.1 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United Kingdom - 17.6                      Japan - 16.1                               France - 9.9                               Germany - 9.6                              United States - 9.0                        Italy - 5.7                                Netherlands - 5.7                          Canada - 3.7                               Sweden - 3.6                               Others - 19.1                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     UniCredit SpA 3.4   Rheinmetall AG 2.9   SAP SE 2.8   Hitachi Ltd 2.8   Constellation Software Inc/Canada 2.4   AXA SA 2.3   London Stock Exchange Group PLC 2.1   3i Group PLC 2.0   RELX PLC 1.9   Taiwan Semiconductor Manufacturing Co Ltd 1.9     24.5  
Fidelity Advisor International Small Cap Opportunities Fund - Class Z  
Shareholder Report [Line Items]  
Fund Name Fidelity® International Small Cap Opportunities Fund
Class Name Fidelity Advisor® International Small Cap Opportunities Fund Class Z
Trading Symbol FIQJX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® International Small Cap Opportunities Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class Z 
$ 45 
0.86%
  
Expenses Paid, Amount $ 45
Expense Ratio, Percent 0.86%
Net Assets $ 1,340,297,691
Holdings Count | shares 115
Investment Company Portfolio Turnover 30.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$1,340,297,691
  
Number of Holdings
115
  
Portfolio Turnover
30%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Industrials 30.2   Information Technology 21.0   Consumer Discretionary 11.2   Communication Services 7.8   Financials 6.0   Materials 4.5   Health Care 3.7   Consumer Staples 3.2   Real Estate 2.8   Energy 1.1     Common Stocks 91.5 International Equity Funds 4.9 Short-Term Investments and Net Other Assets (Liabilities) 3.6 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 91.5                       International Equity Funds - 4.9           Short-Term Investments and Net Other Assets (Liabilities) - 3.6   Japan 26.5 United Kingdom 15.1 Sweden 14.1 United States 10.9 Germany 5.5 Netherlands 4.7 Canada 4.0 Belgium 2.6 France 2.5 Others 14.1 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Japan - 26.5                               United Kingdom - 15.1                      Sweden - 14.1                              United States - 10.9                       Germany - 5.5                              Netherlands - 4.7                          Canada - 4.0                               Belgium - 2.6                              France - 2.5                               Others - 14.1                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Lagercrantz Group AB B Shares 5.2   iShares MSCI EAFE Small-Cap ETF 4.9   AddTech AB B Shares 4.7   Azbil Corp 3.5   CTS Eventim AG & Co KGaA 2.7   Games Workshop Group PLC 2.2   KBC Ancora 2.1   Interpump Group SpA 2.1   Spectris PLC 2.1   Howden Joinery Group PLC 2.0     31.5  
Fidelity Advisor International Growth Fund - Class A  
Shareholder Report [Line Items]  
Fund Name Fidelity® International Growth Fund
Class Name Fidelity Advisor® International Growth Fund Class A
Trading Symbol FIAGX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® International Growth Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class A 
$ 58 
1.15%
  
Expenses Paid, Amount $ 58
Expense Ratio, Percent 1.15%
Net Assets $ 6,458,338,721
Holdings Count | shares 71
Investment Company Portfolio Turnover 31.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$6,458,338,721
  
Number of Holdings
71
  
Portfolio Turnover
31%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Industrials 34.2   Financials 17.9   Information Technology 17.2   Consumer Discretionary 10.0   Materials 9.5   Health Care 4.1   Communication Services 2.4   Energy 0.4   Consumer Staples 0.3     Common Stocks 95.8 Preferred Stocks 0.2 Short-Term Investments and Net Other Assets (Liabilities) 4.0 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 95.8                       Preferred Stocks - 0.2                     Short-Term Investments and Net Other Assets (Liabilities) - 4.0   United States 28.4 United Kingdom 14.4 France 12.5 Germany 9.1 Japan 8.8 Sweden 8.1 Netherlands 4.7 Switzerland 3.1 Canada 2.4 Others 8.5 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 28.4                       United Kingdom - 14.4                      France - 12.5                              Germany - 9.1                              Japan - 8.8                                Sweden - 8.1                               Netherlands - 4.7                          Switzerland - 3.1                          Canada - 2.4                               Others - 8.5                                  
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     SAP SE 6.8   Safran SA 4.6   CRH PLC 3.9   ASML Holding NV 3.5   Atlas Copco AB A Shares 3.5   Linde PLC 3.4   Compass Group PLC 3.1   Recruit Holdings Co Ltd 2.8   LVMH Moet Hennessy Louis Vuitton SE 2.6   Experian PLC 2.5     36.7  
Fidelity Diversified International Fund - Class K  
Shareholder Report [Line Items]  
Fund Name Fidelity® Diversified International Fund
Class Name Fidelity® Diversified International Fund Class K
Trading Symbol FDIKX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Diversified International Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-800-835-5092
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class K 
$ 29 
0.56%
  
Expenses Paid, Amount $ 29
Expense Ratio, Percent 0.56%
Net Assets $ 11,737,421,933
Holdings Count | shares 138
Investment Company Portfolio Turnover 41.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$11,737,421,933
  
Number of Holdings
138
  
Portfolio Turnover
41%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 27.2   Industrials 27.0   Information Technology 10.7   Health Care 9.1   Materials 8.4   Consumer Discretionary 7.9   Energy 3.0   Communication Services 2.5   Consumer Staples 0.8     Common Stocks 96.1 Preferred Stocks 0.5 Short-Term Investments and Net Other Assets (Liabilities) 3.4 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 96.1                       Preferred Stocks - 0.5                     Short-Term Investments and Net Other Assets (Liabilities) - 3.4   Japan 17.6 United Kingdom 15.8 United States 14.5 Germany 11.9 France 9.3 Canada 4.9 Netherlands 4.3 Sweden 3.1 Italy 3.0 Others 15.6 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Japan - 17.6                               United Kingdom - 15.8                      United States - 14.5                       Germany - 11.9                             France - 9.3                               Canada - 4.9                               Netherlands - 4.3                          Sweden - 3.1                               Italy - 3.0                                Others - 15.6                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     SAP SE 2.7   Hitachi Ltd 2.6   Allianz SE 2.0   RELX PLC (Netherlands) 1.9   UniCredit SpA 1.9   London Stock Exchange Group PLC 1.8   Rolls-Royce Holdings PLC 1.7   Wolters Kluwer NV 1.6   Astrazeneca PLC 1.6   Mitsubishi Heavy Industries Ltd 1.6     19.4  
Fidelity International Value Fund  
Shareholder Report [Line Items]  
Fund Name Fidelity® International Value Fund
Class Name Fidelity® International Value Fund
Trading Symbol FIVLX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® International Value Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-800-544-8544
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Fidelity® International Value Fund 
$ 43 
0.81%
  
Expenses Paid, Amount $ 43
Expense Ratio, Percent 0.81%
Net Assets $ 2,052,754,816
Holdings Count | shares 107
Investment Company Portfolio Turnover 34.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$2,052,754,816
  
Number of Holdings
107
  
Portfolio Turnover
34%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 38.8   Industrials 15.4   Materials 10.2   Energy 6.2   Health Care 5.9   Consumer Discretionary 5.1   Consumer Staples 3.8   Communication Services 3.3   Information Technology 2.7   Utilities 0.7   Real Estate 0.5     Common Stocks 92.4 Preferred Stocks 0.2 Short-Term Investments and Net Other Assets (Liabilities) 7.4 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 92.4                       Preferred Stocks - 0.2                     Short-Term Investments and Net Other Assets (Liabilities) - 7.4   Japan 20.3 United States 17.1 United Kingdom 13.7 Germany 13.4 France 9.8 Italy 4.9 Switzerland 3.7 Australia 3.4 Spain 3.1 Others 10.6 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Japan - 20.3                               United States - 17.1                       United Kingdom - 13.7                      Germany - 13.4                             France - 9.8                               Italy - 4.9                                Switzerland - 3.7                          Australia - 3.4                            Spain - 3.1                                Others - 10.6                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Shell PLC ADR 2.9   AXA SA 2.6   Banco Santander SA 2.5   Rheinmetall AG 2.4   Zurich Insurance Group AG 2.3   Mitsubishi UFJ Financial Group Inc 2.2   Sumitomo Mitsui Financial Group Inc 2.1   Roche Holding AG 2.1   BAE Systems PLC 2.0   Muenchener Rueckversicherungs-Gesellschaft AG in Muenchen 2.0     23.1  
Fidelity Advisor Canada Fund - Class C  
Shareholder Report [Line Items]  
Fund Name Fidelity® Canada Fund
Class Name Fidelity Advisor® Canada Fund Class C
Trading Symbol FCCNX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Canada Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class C 
$ 101 
1.97%
  
Expenses Paid, Amount $ 101
Expense Ratio, Percent 1.97%
Net Assets $ 942,606,561
Holdings Count | shares 68
Investment Company Portfolio Turnover 12.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$942,606,561
  
Number of Holdings
68
  
Portfolio Turnover
12%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 28.2   Energy 15.6   Industrials 12.5   Materials 12.2   Information Technology 11.7   Consumer Staples 8.6   Consumer Discretionary 7.5   Communication Services 2.2   Health Care 0.8   Utilities 0.2     Common Stocks 99.0 Preferred Stocks 0.3 Bonds 0.2 Short-Term Investments and Net Other Assets (Liabilities) 0.5 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 99.0                       Preferred Stocks - 0.3                     Bonds - 0.2                                Short-Term Investments and Net Other Assets (Liabilities) - 0.5   Canada 92.7 United States 3.7 Brazil 3.0 Chile 0.5 Zambia 0.1 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Canada - 92.7                              United States - 3.7                        Brazil - 3.0                               Chile - 0.5                                Zambia - 0.1                                  
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Royal Bank of Canada 7.9   Constellation Software Inc/Canada 6.2   Canadian Pacific Kansas City Ltd 5.0   Alimentation Couche-Tard Inc 4.6   Franco-Nevada Corp 4.5   Toronto Dominion Bank 3.9   Shopify Inc Class A 3.8   Dollarama Inc 3.8   Canadian Natural Resources Ltd 3.7   PrairieSky Royalty Ltd 3.3     46.7  
Fidelity Overseas Fund  
Shareholder Report [Line Items]  
Fund Name Fidelity® Overseas Fund
Class Name Fidelity® Overseas Fund
Trading Symbol FOSFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Overseas Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-800-544-8544
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Fidelity® Overseas Fund 
$ 33 
0.63%
  
Expenses Paid, Amount $ 33
Expense Ratio, Percent 0.63%
Net Assets $ 6,788,264,008
Holdings Count | shares 85
Investment Company Portfolio Turnover 51.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$6,788,264,008
  
Number of Holdings
85
  
Portfolio Turnover
51%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 29.2   Industrials 26.6   Information Technology 12.7   Health Care 8.0   Materials 6.7   Communication Services 6.6   Consumer Discretionary 5.7   Consumer Staples 1.3     Common Stocks 96.8 Short-Term Investments and Net Other Assets (Liabilities) 3.2 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 96.8                       Short-Term Investments and Net Other Assets (Liabilities) - 3.2   United States 18.5 United Kingdom 16.9 Japan 13.7 Germany 12.3 France 11.3 Netherlands 6.1 Italy 3.8 Spain 3.2 Denmark 2.8 Others 11.4 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 18.5                       United Kingdom - 16.9                      Japan - 13.7                               Germany - 12.3                             France - 11.3                              Netherlands - 6.1                          Italy - 3.8                                Spain - 3.2                                Denmark - 2.8                              Others - 11.4                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     SAP SE 3.4   RELX PLC 2.4   Hitachi Ltd 2.4   Allianz SE 2.3   Tokio Marine Holdings Inc 2.2   Safran SA 2.2   London Stock Exchange Group PLC 2.2   Deutsche Boerse AG 2.0   Wolters Kluwer NV 2.0   3i Group PLC 2.0     23.1  
Fidelity Advisor Japan Fund - Class M  
Shareholder Report [Line Items]  
Fund Name Fidelity® Japan Fund
Class Name Fidelity Advisor® Japan Fund Class M
Trading Symbol FJPTX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Japan Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class M 
$ 62 
1.23%
  
Expenses Paid, Amount $ 62
Expense Ratio, Percent 1.23%
Net Assets $ 710,338,465
Holdings Count | shares 86
Investment Company Portfolio Turnover 31.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$710,338,465
  
Number of Holdings
86
  
Portfolio Turnover
31%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Industrials 28.4   Information Technology 19.0   Financials 15.1   Consumer Discretionary 11.6   Communication Services 6.8   Materials 6.4   Health Care 5.5   Consumer Staples 2.5   Real Estate 1.1   Energy 1.0     Common Stocks 97.4 Short-Term Investments and Net Other Assets (Liabilities) 2.6 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 97.4                       Short-Term Investments and Net Other Assets (Liabilities) - 2.6   Japan 96.7 United States 3.1 China 0.2 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Japan - 96.7                               United States - 3.1                        China - 0.2                                   
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Sumitomo Mitsui Financial Group Inc 6.4   Sony Group Corp 5.1   Hitachi Ltd 4.8   Fujitsu Ltd 3.0   Tokio Marine Holdings Inc 2.9   Hoya Corp 2.9   ORIX Corp 2.8   Nintendo Co Ltd 2.8   Shin-Etsu Chemical Co Ltd 2.7   FUJIFILM Holdings Corp 2.5     35.9  
Fidelity Advisor International Small Cap Fund - Class I  
Shareholder Report [Line Items]  
Fund Name Fidelity® International Small Cap Fund
Class Name Fidelity Advisor® International Small Cap Fund Class I
Trading Symbol FIXIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® International Small Cap Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class I 
$ 51 
1.00%
  
Expenses Paid, Amount $ 51
Expense Ratio, Percent 1.00%
Net Assets $ 4,896,590,377
Holdings Count | shares 199
Investment Company Portfolio Turnover 18.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$4,896,590,377
  
Number of Holdings
199
  
Portfolio Turnover
18%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Industrials 23.4   Financials 15.8   Consumer Staples 10.8   Consumer Discretionary 10.0   Materials 8.2   Information Technology 7.6   Health Care 6.0   Real Estate 5.8   Communication Services 4.6   Energy 3.5   Utilities 0.6     Common Stocks 96.3 Short-Term Investments and Net Other Assets (Liabilities) 3.7 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 96.3                       Short-Term Investments and Net Other Assets (Liabilities) - 3.7   Japan 22.3 United Kingdom 13.4 United States 6.6 Canada 4.1 Australia 3.8 Spain 3.6 China 3.5 Mexico 3.5 Italy 3.1 Others 36.1 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Japan - 22.3                               United Kingdom - 13.4                      United States - 6.6                        Canada - 4.1                               Australia - 3.8                            Spain - 3.6                                China - 3.5                                Mexico - 3.5                               Italy - 3.1                                Others - 36.1                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Logista Integral SA 1.1   BayCurrent Inc 1.1   Premier Foods PLC 1.1   Ashtead Technology Holdings plc 1.1   Metlen Energy & Metals SA 1.0   Grupo Catalana Occidente SA 1.0   Century Pacific Food Inc 1.0   Richter Gedeon Nyrt 0.9   Spar Nord Bank A/S 0.9   Qualitas Controladora SAB de CV 0.9     10.1  
Fidelity Advisor International Growth Fund - Class M  
Shareholder Report [Line Items]  
Fund Name Fidelity® International Growth Fund
Class Name Fidelity Advisor® International Growth Fund Class M
Trading Symbol FITGX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® International Growth Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class M 
$ 70 
1.40%
  
Expenses Paid, Amount $ 70
Expense Ratio, Percent 1.40%
Net Assets $ 6,458,338,721
Holdings Count | shares 71
Investment Company Portfolio Turnover 31.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$6,458,338,721
  
Number of Holdings
71
  
Portfolio Turnover
31%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Industrials 34.2   Financials 17.9   Information Technology 17.2   Consumer Discretionary 10.0   Materials 9.5   Health Care 4.1   Communication Services 2.4   Energy 0.4   Consumer Staples 0.3     Common Stocks 95.8 Preferred Stocks 0.2 Short-Term Investments and Net Other Assets (Liabilities) 4.0 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 95.8                       Preferred Stocks - 0.2                     Short-Term Investments and Net Other Assets (Liabilities) - 4.0   United States 28.4 United Kingdom 14.4 France 12.5 Germany 9.1 Japan 8.8 Sweden 8.1 Netherlands 4.7 Switzerland 3.1 Canada 2.4 Others 8.5 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 28.4                       United Kingdom - 14.4                      France - 12.5                              Germany - 9.1                              Japan - 8.8                                Sweden - 8.1                               Netherlands - 4.7                          Switzerland - 3.1                          Canada - 2.4                               Others - 8.5                                  
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     SAP SE 6.8   Safran SA 4.6   CRH PLC 3.9   ASML Holding NV 3.5   Atlas Copco AB A Shares 3.5   Linde PLC 3.4   Compass Group PLC 3.1   Recruit Holdings Co Ltd 2.8   LVMH Moet Hennessy Louis Vuitton SE 2.6   Experian PLC 2.5     36.7  
Fidelity International Capital Appreciation Fund  
Shareholder Report [Line Items]  
Fund Name Fidelity® International Capital Appreciation Fund
Class Name Fidelity® International Capital Appreciation Fund
Trading Symbol FIVFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® International Capital Appreciation Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-800-544-8544
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Fidelity® International Capital Appreciation Fund 
$ 44 
0.87%
  
Expenses Paid, Amount $ 44
Expense Ratio, Percent 0.87%
Net Assets $ 3,800,821,658
Holdings Count | shares 63
Investment Company Portfolio Turnover 96.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$3,800,821,658
  
Number of Holdings
63
  
Portfolio Turnover
96%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Industrials 30.1   Financials 26.0   Information Technology 17.6   Communication Services 8.5   Consumer Discretionary 8.0   Materials 6.6   Health Care 1.4   Utilities 0.1     Common Stocks 98.3 Short-Term Investments and Net Other Assets (Liabilities) 1.7 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 98.3                       Short-Term Investments and Net Other Assets (Liabilities) - 1.7   United States 25.7 Germany 12.3 France 8.6 United Kingdom 8.5 India 7.0 Canada 7.0 Japan 6.0 Netherlands 5.4 Switzerland 4.9 Others 14.6 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 25.7                       Germany - 12.3                             France - 8.6                               United Kingdom - 8.5                       India - 7.0                                Canada - 7.0                               Japan - 6.0                                Netherlands - 5.4                          Switzerland - 4.9                          Others - 14.6                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Taiwan Semiconductor Manufacturing Co Ltd 4.2   Tencent Holdings Ltd 2.9   SAP SE 2.5   ASML Holding NV 2.2   Shopify Inc Class A (United States) 2.2   Hitachi Ltd 2.1   Rolls-Royce Holdings PLC 2.1   Schneider Electric SE 2.1   Mitsubishi Heavy Industries Ltd 2.0   Sony Group Corp 1.9     24.2  
Fidelity Advisor Emerging Markets Fund - Class Z  
Shareholder Report [Line Items]  
Fund Name Fidelity® Emerging Markets Fund
Class Name Fidelity Advisor® Emerging Markets Fund Class Z
Trading Symbol FZEMX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Emerging Markets Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class Z 
$ 36 
0.73%
  
Expenses Paid, Amount $ 36
Expense Ratio, Percent 0.73%
Net Assets $ 6,926,988,734
Holdings Count | shares 79
Investment Company Portfolio Turnover 35.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$6,926,988,734
  
Number of Holdings
79
  
Portfolio Turnover
35%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Information Technology 25.5   Financials 19.7   Consumer Discretionary 15.0   Communication Services 12.7   Industrials 8.9   Energy 6.0   Health Care 4.4   Consumer Staples 4.3   Utilities 1.8   Real Estate 0.6   Materials 0.5     Common Stocks 98.8 Bonds 0.4 Preferred Stocks 0.2 Short-Term Investments and Net Other Assets (Liabilities) 0.6 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 98.8                       Bonds - 0.4                                Preferred Stocks - 0.2                     Short-Term Investments and Net Other Assets (Liabilities) - 0.6   China 25.4 India 19.5 Taiwan 15.7 Korea (South) 6.0 Brazil 5.9 United States 4.8 Mexico 3.0 France 2.9 Indonesia 2.9 Others 13.9 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     China - 25.4                               India - 19.5                               Taiwan - 15.7                              Korea (South) - 6.0                        Brazil - 5.9                               United States - 4.8                        Mexico - 3.0                               France - 2.9                               Indonesia - 2.9                            Others - 13.9                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Taiwan Semiconductor Manufacturing Co Ltd 13.2   Tencent Holdings Ltd 8.7   NVIDIA Corp 3.4   Alibaba Group Holding Ltd ADR 3.2   HDFC Bank Ltd 3.1   Bank Central Asia Tbk PT 2.9   PDD Holdings Inc Class A ADR 2.6   Samsung Electronics Co Ltd 2.5   Reliance Industries Ltd 2.1   SK Hynix Inc 2.1     43.8  
Fidelity Advisor International Growth Fund - Class I  
Shareholder Report [Line Items]  
Fund Name Fidelity® International Growth Fund
Class Name Fidelity Advisor® International Growth Fund Class I
Trading Symbol FIIIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® International Growth Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class I 
$ 45 
0.90%
  
Expenses Paid, Amount $ 45
Expense Ratio, Percent 0.90%
Net Assets $ 6,458,338,721
Holdings Count | shares 71
Investment Company Portfolio Turnover 31.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$6,458,338,721
  
Number of Holdings
71
  
Portfolio Turnover
31%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Industrials 34.2   Financials 17.9   Information Technology 17.2   Consumer Discretionary 10.0   Materials 9.5   Health Care 4.1   Communication Services 2.4   Energy 0.4   Consumer Staples 0.3     Common Stocks 95.8 Preferred Stocks 0.2 Short-Term Investments and Net Other Assets (Liabilities) 4.0 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 95.8                       Preferred Stocks - 0.2                     Short-Term Investments and Net Other Assets (Liabilities) - 4.0   United States 28.4 United Kingdom 14.4 France 12.5 Germany 9.1 Japan 8.8 Sweden 8.1 Netherlands 4.7 Switzerland 3.1 Canada 2.4 Others 8.5 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 28.4                       United Kingdom - 14.4                      France - 12.5                              Germany - 9.1                              Japan - 8.8                                Sweden - 8.1                               Netherlands - 4.7                          Switzerland - 3.1                          Canada - 2.4                               Others - 8.5                                  
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     SAP SE 6.8   Safran SA 4.6   CRH PLC 3.9   ASML Holding NV 3.5   Atlas Copco AB A Shares 3.5   Linde PLC 3.4   Compass Group PLC 3.1   Recruit Holdings Co Ltd 2.8   LVMH Moet Hennessy Louis Vuitton SE 2.6   Experian PLC 2.5     36.7  
Fidelity Emerging Markets Discovery Fund  
Shareholder Report [Line Items]  
Fund Name Fidelity® Emerging Markets Discovery Fund
Class Name Fidelity® Emerging Markets Discovery Fund
Trading Symbol FEDDX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Emerging Markets Discovery Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-800-544-8544
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Fidelity® Emerging Markets Discovery Fund 
$ 49 
0.98%
  
Expenses Paid, Amount $ 49
Expense Ratio, Percent 0.98%
Net Assets $ 1,026,456,466
Holdings Count | shares 103
Investment Company Portfolio Turnover 38.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$1,026,456,466
  
Number of Holdings
103
  
Portfolio Turnover
38%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Industrials 22.1   Financials 18.6   Consumer Discretionary 16.1   Consumer Staples 10.9   Information Technology 10.3   Health Care 4.7   Real Estate 4.3   Communication Services 3.6   Energy 2.9   Utilities 2.4   Materials 2.1     Common Stocks 98.0 Short-Term Investments and Net Other Assets (Liabilities) 2.0 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 98.0                       Short-Term Investments and Net Other Assets (Liabilities) - 2.0   Taiwan 17.8 China 17.5 Brazil 13.1 India 11.9 Korea (South) 7.6 Mexico 5.5 Indonesia 4.1 United States 3.3 Poland 2.7 Others 16.5 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Taiwan - 17.8                              China - 17.5                               Brazil - 13.1                              India - 11.9                               Korea (South) - 7.6                        Mexico - 5.5                               Indonesia - 4.1                            United States - 3.3                        Poland - 2.7                               Others - 16.5                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     OPAP SA 1.7   Localiza Rent a Car SA 1.6   Lion Finance Group PLC 1.5   Dino Polska SA 1.5   Max Healthcare Institute Ltd 1.4   Qualitas Controladora SAB de CV 1.4   Eicher Motors Ltd 1.3   Equatorial Energia SA 1.3   Shriram Finance Ltd 1.3   Banco de Chile ADR 1.3     14.3  
Fidelity Advisor China Region Fund - Class A  
Shareholder Report [Line Items]  
Fund Name Fidelity® China Region Fund
Class Name Fidelity Advisor® China Region Fund Class A
Trading Symbol FHKAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® China Region Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class A 
$ 58 
1.18%
  
Expenses Paid, Amount $ 58
Expense Ratio, Percent 1.18%
Net Assets $ 1,096,792,327
Holdings Count | shares 76
Investment Company Portfolio Turnover 32.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$1,096,792,327
  
Number of Holdings
76
  
Portfolio Turnover
32%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Information Technology 30.9   Consumer Discretionary 22.4   Communication Services 17.2   Financials 13.2   Health Care 4.3   Materials 3.2   Industrials 2.8   Consumer Staples 2.7   Real Estate 1.1     Common Stocks 95.8 Preferred Stocks 2.0 Short-Term Investments and Net Other Assets (Liabilities) 2.2 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 95.8                       Preferred Stocks - 2.0                     Short-Term Investments and Net Other Assets (Liabilities) - 2.2   China 60.2 Taiwan 29.1 Hong Kong 4.1 United States 3.2 Singapore 1.4 Korea (South) 1.1 South Africa 0.5 France 0.4 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     China - 60.2                               Taiwan - 29.1                              Hong Kong - 4.1                            United States - 3.2                        Singapore - 1.4                            Korea (South) - 1.1                        South Africa - 0.5                         France - 0.4                                  
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Taiwan Semiconductor Manufacturing Co Ltd 21.7   Tencent Holdings Ltd 13.4   Alibaba Group Holding Ltd 6.6   PDD Holdings Inc Class A ADR 4.0   China Construction Bank Corp H Shares 3.4   AIA Group Ltd 3.2   Zijin Mining Group Co Ltd H Shares 2.6   Industrial & Commercial Bank of China Ltd H Shares 1.7   MediaTek Inc 1.6   Meituan B Shares 1.5     59.7  
Fidelity Advisor Worldwide Fund - Class M  
Shareholder Report [Line Items]  
Fund Name Fidelity® Worldwide Fund
Class Name Fidelity Advisor® Worldwide Fund Class M
Trading Symbol FWTFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Worldwide Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class M 
$ 61 
1.28%
  
Expenses Paid, Amount $ 61
Expense Ratio, Percent 1.28%
Net Assets $ 2,906,574,043
Holdings Count | shares 165
Investment Company Portfolio Turnover 163.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$2,906,574,043
  
Number of Holdings
165
  
Portfolio Turnover
163%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Information Technology 19.3   Consumer Discretionary 16.3   Financials 15.4   Communication Services 12.9   Health Care 8.6   Industrials 7.1   Consumer Staples 5.6   Real Estate 3.8   Energy 3.2   Materials 2.1   Utilities 2.0     Common Stocks 96.1 Preferred Stocks 0.2 Short-Term Investments and Net Other Assets (Liabilities) 3.7 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 96.1                       Preferred Stocks - 0.2                     Short-Term Investments and Net Other Assets (Liabilities) - 3.7   United States 65.2 United Kingdom 5.0 Japan 3.8 Canada 3.6 Sweden 3.2 Spain 2.0 Netherlands 1.7 Italy 1.7 France 1.5 Others 12.3 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 65.2                       United Kingdom - 5.0                       Japan - 3.8                                Canada - 3.6                               Sweden - 3.2                               Spain - 2.0                                Netherlands - 1.7                          Italy - 1.7                                France - 1.5                               Others - 12.3                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Amazon.com Inc 4.1   NVIDIA Corp 4.0   Meta Platforms Inc Class A 3.5   Microsoft Corp 3.1   Robinhood Markets Inc Class A 2.9   Apple Inc 2.6   Alphabet Inc Class A 2.6   Kyndryl Holdings Inc 2.5   Prologis Inc 2.1   DraftKings Inc Class A 2.0     29.4  
Fidelity Advisor China Region Fund - Class Z  
Shareholder Report [Line Items]  
Fund Name Fidelity® China Region Fund
Class Name Fidelity Advisor® China Region Fund Class Z
Trading Symbol FIQFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® China Region Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class Z 
$ 38 
0.77%
  
Expenses Paid, Amount $ 38
Expense Ratio, Percent 0.77%
Net Assets $ 1,096,792,327
Holdings Count | shares 76
Investment Company Portfolio Turnover 32.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$1,096,792,327
  
Number of Holdings
76
  
Portfolio Turnover
32%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Information Technology 30.9   Consumer Discretionary 22.4   Communication Services 17.2   Financials 13.2   Health Care 4.3   Materials 3.2   Industrials 2.8   Consumer Staples 2.7   Real Estate 1.1     Common Stocks 95.8 Preferred Stocks 2.0 Short-Term Investments and Net Other Assets (Liabilities) 2.2 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 95.8                       Preferred Stocks - 2.0                     Short-Term Investments and Net Other Assets (Liabilities) - 2.2   China 60.2 Taiwan 29.1 Hong Kong 4.1 United States 3.2 Singapore 1.4 Korea (South) 1.1 South Africa 0.5 France 0.4 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     China - 60.2                               Taiwan - 29.1                              Hong Kong - 4.1                            United States - 3.2                        Singapore - 1.4                            Korea (South) - 1.1                        South Africa - 0.5                         France - 0.4                                  
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Taiwan Semiconductor Manufacturing Co Ltd 21.7   Tencent Holdings Ltd 13.4   Alibaba Group Holding Ltd 6.6   PDD Holdings Inc Class A ADR 4.0   China Construction Bank Corp H Shares 3.4   AIA Group Ltd 3.2   Zijin Mining Group Co Ltd H Shares 2.6   Industrial & Commercial Bank of China Ltd H Shares 1.7   MediaTek Inc 1.6   Meituan B Shares 1.5     59.7  
Fidelity Japan Fund  
Shareholder Report [Line Items]  
Fund Name Fidelity® Japan Fund
Class Name Fidelity® Japan Fund
Trading Symbol FJPNX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Japan Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-800-544-8544
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Fidelity® Japan Fund 
$ 35 
0.69%
  
Expenses Paid, Amount $ 35
Expense Ratio, Percent 0.69%
Net Assets $ 710,338,465
Holdings Count | shares 86
Investment Company Portfolio Turnover 31.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$710,338,465
  
Number of Holdings
86
  
Portfolio Turnover
31%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Industrials 28.4   Information Technology 19.0   Financials 15.1   Consumer Discretionary 11.6   Communication Services 6.8   Materials 6.4   Health Care 5.5   Consumer Staples 2.5   Real Estate 1.1   Energy 1.0     Common Stocks 97.4 Short-Term Investments and Net Other Assets (Liabilities) 2.6 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 97.4                       Short-Term Investments and Net Other Assets (Liabilities) - 2.6   Japan 96.7 United States 3.1 China 0.2 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Japan - 96.7                               United States - 3.1                        China - 0.2                                   
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Sumitomo Mitsui Financial Group Inc 6.4   Sony Group Corp 5.1   Hitachi Ltd 4.8   Fujitsu Ltd 3.0   Tokio Marine Holdings Inc 2.9   Hoya Corp 2.9   ORIX Corp 2.8   Nintendo Co Ltd 2.8   Shin-Etsu Chemical Co Ltd 2.7   FUJIFILM Holdings Corp 2.5     35.9  
Fidelity Advisor International Small Cap Fund - Class Z  
Shareholder Report [Line Items]  
Fund Name Fidelity® International Small Cap Fund
Class Name Fidelity Advisor® International Small Cap Fund Class Z
Trading Symbol FIQIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® International Small Cap Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class Z 
$ 45 
0.88%
  
Expenses Paid, Amount $ 45
Expense Ratio, Percent 0.88%
Net Assets $ 4,896,590,377
Holdings Count | shares 199
Investment Company Portfolio Turnover 18.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$4,896,590,377
  
Number of Holdings
199
  
Portfolio Turnover
18%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Industrials 23.4   Financials 15.8   Consumer Staples 10.8   Consumer Discretionary 10.0   Materials 8.2   Information Technology 7.6   Health Care 6.0   Real Estate 5.8   Communication Services 4.6   Energy 3.5   Utilities 0.6     Common Stocks 96.3 Short-Term Investments and Net Other Assets (Liabilities) 3.7 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 96.3                       Short-Term Investments and Net Other Assets (Liabilities) - 3.7   Japan 22.3 United Kingdom 13.4 United States 6.6 Canada 4.1 Australia 3.8 Spain 3.6 China 3.5 Mexico 3.5 Italy 3.1 Others 36.1 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Japan - 22.3                               United Kingdom - 13.4                      United States - 6.6                        Canada - 4.1                               Australia - 3.8                            Spain - 3.6                                China - 3.5                                Mexico - 3.5                               Italy - 3.1                                Others - 36.1                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Logista Integral SA 1.1   BayCurrent Inc 1.1   Premier Foods PLC 1.1   Ashtead Technology Holdings plc 1.1   Metlen Energy & Metals SA 1.0   Grupo Catalana Occidente SA 1.0   Century Pacific Food Inc 1.0   Richter Gedeon Nyrt 0.9   Spar Nord Bank A/S 0.9   Qualitas Controladora SAB de CV 0.9     10.1  
Fidelity International Discovery K6 Fund  
Shareholder Report [Line Items]  
Fund Name Fidelity® International Discovery K6 Fund
Class Name Fidelity® International Discovery K6 Fund
Trading Symbol FDKFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® International Discovery K6 Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-800-835-5092
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Fidelity® International Discovery K6 Fund 
$ 31 
0.60%
  
Expenses Paid, Amount $ 31
Expense Ratio, Percent 0.60%
Net Assets $ 542,425,322
Holdings Count | shares 127
Investment Company Portfolio Turnover 50.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$542,425,322
  
Number of Holdings
127
  
Portfolio Turnover
50%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 25.6   Industrials 23.5   Consumer Discretionary 12.8   Information Technology 12.6   Health Care 7.4   Communication Services 7.1   Materials 3.4   Consumer Staples 2.3   Energy 1.0     Common Stocks 95.2 Preferred Stocks 0.5 Short-Term Investments and Net Other Assets (Liabilities) 4.3 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 95.2                       Preferred Stocks - 0.5                     Short-Term Investments and Net Other Assets (Liabilities) - 4.3   United Kingdom 18.2 Japan 16.0 France 9.9 Germany 9.6 United States 9.0 Italy 5.9 Netherlands 5.7 Canada 3.7 Sweden 3.6 Others 18.4 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United Kingdom - 18.2                      Japan - 16.0                               France - 9.9                               Germany - 9.6                              United States - 9.0                        Italy - 5.9                                Netherlands - 5.7                          Canada - 3.7                               Sweden - 3.6                               Others - 18.4                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     UniCredit SpA 3.4   Rheinmetall AG 2.9   SAP SE 2.8   Hitachi Ltd 2.8   Zegona Communications plc 2.6   Constellation Software Inc/Canada 2.4   AXA SA 2.3   London Stock Exchange Group PLC 2.0   3i Group PLC 2.0   RELX PLC 1.9     25.1  
Fidelity International Growth Fund  
Shareholder Report [Line Items]  
Fund Name Fidelity® International Growth Fund
Class Name Fidelity® International Growth Fund
Trading Symbol FIGFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® International Growth Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-800-544-8544
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Fidelity® International Growth Fund 
$ 43 
0.86%
  
Expenses Paid, Amount $ 43
Expense Ratio, Percent 0.86%
Net Assets $ 6,458,338,721
Holdings Count | shares 71
Investment Company Portfolio Turnover 31.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$6,458,338,721
  
Number of Holdings
71
  
Portfolio Turnover
31%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Industrials 34.2   Financials 17.9   Information Technology 17.2   Consumer Discretionary 10.0   Materials 9.5   Health Care 4.1   Communication Services 2.4   Energy 0.4   Consumer Staples 0.3     Common Stocks 95.8 Preferred Stocks 0.2 Short-Term Investments and Net Other Assets (Liabilities) 4.0 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 95.8                       Preferred Stocks - 0.2                     Short-Term Investments and Net Other Assets (Liabilities) - 4.0   United States 28.4 United Kingdom 14.4 France 12.5 Germany 9.1 Japan 8.8 Sweden 8.1 Netherlands 4.7 Switzerland 3.1 Canada 2.4 Others 8.5 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 28.4                       United Kingdom - 14.4                      France - 12.5                              Germany - 9.1                              Japan - 8.8                                Sweden - 8.1                               Netherlands - 4.7                          Switzerland - 3.1                          Canada - 2.4                               Others - 8.5                                  
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     SAP SE 6.8   Safran SA 4.6   CRH PLC 3.9   ASML Holding NV 3.5   Atlas Copco AB A Shares 3.5   Linde PLC 3.4   Compass Group PLC 3.1   Recruit Holdings Co Ltd 2.8   LVMH Moet Hennessy Louis Vuitton SE 2.6   Experian PLC 2.5     36.7  
Fidelity Advisor Japan Fund - Class I  
Shareholder Report [Line Items]  
Fund Name Fidelity® Japan Fund
Class Name Fidelity Advisor® Japan Fund Class I
Trading Symbol FJPIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Japan Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class I 
$ 37 
0.73%
  
Expenses Paid, Amount $ 37
Expense Ratio, Percent 0.73%
Net Assets $ 710,338,465
Holdings Count | shares 86
Investment Company Portfolio Turnover 31.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$710,338,465
  
Number of Holdings
86
  
Portfolio Turnover
31%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Industrials 28.4   Information Technology 19.0   Financials 15.1   Consumer Discretionary 11.6   Communication Services 6.8   Materials 6.4   Health Care 5.5   Consumer Staples 2.5   Real Estate 1.1   Energy 1.0     Common Stocks 97.4 Short-Term Investments and Net Other Assets (Liabilities) 2.6 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 97.4                       Short-Term Investments and Net Other Assets (Liabilities) - 2.6   Japan 96.7 United States 3.1 China 0.2 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Japan - 96.7                               United States - 3.1                        China - 0.2                                   
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Sumitomo Mitsui Financial Group Inc 6.4   Sony Group Corp 5.1   Hitachi Ltd 4.8   Fujitsu Ltd 3.0   Tokio Marine Holdings Inc 2.9   Hoya Corp 2.9   ORIX Corp 2.8   Nintendo Co Ltd 2.8   Shin-Etsu Chemical Co Ltd 2.7   FUJIFILM Holdings Corp 2.5     35.9  
Fidelity Advisor Global Equity Income Fund - Class Z  
Shareholder Report [Line Items]  
Fund Name Fidelity® Global Equity Income Fund
Class Name Fidelity Advisor® Global Equity Income Fund Class Z
Trading Symbol FGEKX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Global Equity Income Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class Z 
$ 41 
0.80%
  
Expenses Paid, Amount $ 41
Expense Ratio, Percent 0.80%
Net Assets $ 292,744,990
Holdings Count | shares 151
Investment Company Portfolio Turnover 12.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$292,744,990
  
Number of Holdings
151
  
Portfolio Turnover
12%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Information Technology 18.1   Industrials 15.2   Financials 14.2   Health Care 11.3   Consumer Discretionary 9.7   Consumer Staples 9.3   Communication Services 7.5   Energy 4.7   Utilities 4.1   Materials 3.6   Real Estate 1.1     Common Stocks 98.8 Short-Term Investments and Net Other Assets (Liabilities) 1.2 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 98.8                       Short-Term Investments and Net Other Assets (Liabilities) - 1.2   United States 58.7 United Kingdom 7.6 Germany 7.1 Japan 6.0 Canada 4.9 France 3.4 Taiwan 2.3 Netherlands 1.6 Ireland 1.5 Others 6.9 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 58.7                       United Kingdom - 7.6                       Germany - 7.1                              Japan - 6.0                                Canada - 4.9                               France - 3.4                               Taiwan - 2.3                               Netherlands - 1.6                          Ireland - 1.5                              Others - 6.9                                  
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Rheinmetall AG 5.2   Apple Inc 4.6   Microsoft Corp 4.2   Taiwan Semiconductor Manufacturing Co Ltd 2.3   JPMorgan Chase & Co 1.8   AbbVie Inc 1.6   NXP Semiconductors NV 1.6   T-Mobile US Inc 1.5   Eli Lilly & Co 1.4   Linde PLC 1.4     25.6  
Fidelity Advisor Worldwide Fund - Class C  
Shareholder Report [Line Items]  
Fund Name Fidelity® Worldwide Fund
Class Name Fidelity Advisor® Worldwide Fund Class C
Trading Symbol FWCFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Worldwide Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class C 
$ 85 
1.78%
  
Expenses Paid, Amount $ 85
Expense Ratio, Percent 1.78%
Net Assets $ 2,906,574,043
Holdings Count | shares 165
Investment Company Portfolio Turnover 163.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$2,906,574,043
  
Number of Holdings
165
  
Portfolio Turnover
163%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Information Technology 19.3   Consumer Discretionary 16.3   Financials 15.4   Communication Services 12.9   Health Care 8.6   Industrials 7.1   Consumer Staples 5.6   Real Estate 3.8   Energy 3.2   Materials 2.1   Utilities 2.0     Common Stocks 96.1 Preferred Stocks 0.2 Short-Term Investments and Net Other Assets (Liabilities) 3.7 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 96.1                       Preferred Stocks - 0.2                     Short-Term Investments and Net Other Assets (Liabilities) - 3.7   United States 65.2 United Kingdom 5.0 Japan 3.8 Canada 3.6 Sweden 3.2 Spain 2.0 Netherlands 1.7 Italy 1.7 France 1.5 Others 12.3 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 65.2                       United Kingdom - 5.0                       Japan - 3.8                                Canada - 3.6                               Sweden - 3.2                               Spain - 2.0                                Netherlands - 1.7                          Italy - 1.7                                France - 1.5                               Others - 12.3                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Amazon.com Inc 4.1   NVIDIA Corp 4.0   Meta Platforms Inc Class A 3.5   Microsoft Corp 3.1   Robinhood Markets Inc Class A 2.9   Apple Inc 2.6   Alphabet Inc Class A 2.6   Kyndryl Holdings Inc 2.5   Prologis Inc 2.1   DraftKings Inc Class A 2.0     29.4  
Fidelity International Capital Appreciation K6 Fund  
Shareholder Report [Line Items]  
Fund Name Fidelity® International Capital Appreciation K6 Fund
Class Name Fidelity® International Capital Appreciation K6 Fund
Trading Symbol FAPCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® International Capital Appreciation K6 Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-800-835-5092
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Fidelity® International Capital Appreciation K6 Fund 
$ 33 
0.65%
  
Expenses Paid, Amount $ 33
Expense Ratio, Percent 0.65%
Net Assets $ 1,671,811,761
Holdings Count | shares 63
Investment Company Portfolio Turnover 96.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$1,671,811,761
  
Number of Holdings
63
  
Portfolio Turnover
96%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Industrials 30.2   Financials 26.0   Information Technology 17.6   Communication Services 8.5   Consumer Discretionary 7.9   Materials 6.6   Health Care 1.4   Utilities 0.1     Common Stocks 98.3 Short-Term Investments and Net Other Assets (Liabilities) 1.7 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 98.3                       Short-Term Investments and Net Other Assets (Liabilities) - 1.7   United States 25.7 Germany 12.3 France 8.6 United Kingdom 8.5 Canada 7.0 India 7.0 Japan 6.0 Netherlands 5.4 Switzerland 4.9 Others 14.6 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 25.7                       Germany - 12.3                             France - 8.6                               United Kingdom - 8.5                       Canada - 7.0                               India - 7.0                                Japan - 6.0                                Netherlands - 5.4                          Switzerland - 4.9                          Others - 14.6                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Taiwan Semiconductor Manufacturing Co Ltd 4.2   Tencent Holdings Ltd 3.0   SAP SE 2.5   ASML Holding NV 2.2   Shopify Inc Class A (United States) 2.2   Hitachi Ltd 2.1   Rolls-Royce Holdings PLC 2.1   Schneider Electric SE 2.1   Mitsubishi Heavy Industries Ltd 2.0   Sony Group Corp 1.9     24.3  
Fidelity Advisor Emerging Markets Discovery Fund - Class C  
Shareholder Report [Line Items]  
Fund Name Fidelity® Emerging Markets Discovery Fund
Class Name Fidelity Advisor® Emerging Markets Discovery Fund Class C
Trading Symbol FEDGX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Emerging Markets Discovery Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class C 
$ 100 
2.02%
  
Expenses Paid, Amount $ 100
Expense Ratio, Percent 2.02%
Net Assets $ 1,026,456,466
Holdings Count | shares 103
Investment Company Portfolio Turnover 38.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$1,026,456,466
  
Number of Holdings
103
  
Portfolio Turnover
38%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Industrials 22.1   Financials 18.6   Consumer Discretionary 16.1   Consumer Staples 10.9   Information Technology 10.3   Health Care 4.7   Real Estate 4.3   Communication Services 3.6   Energy 2.9   Utilities 2.4   Materials 2.1     Common Stocks 98.0 Short-Term Investments and Net Other Assets (Liabilities) 2.0 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 98.0                       Short-Term Investments and Net Other Assets (Liabilities) - 2.0   Taiwan 17.8 China 17.5 Brazil 13.1 India 11.9 Korea (South) 7.6 Mexico 5.5 Indonesia 4.1 United States 3.3 Poland 2.7 Others 16.5 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Taiwan - 17.8                              China - 17.5                               Brazil - 13.1                              India - 11.9                               Korea (South) - 7.6                        Mexico - 5.5                               Indonesia - 4.1                            United States - 3.3                        Poland - 2.7                               Others - 16.5                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     OPAP SA 1.7   Localiza Rent a Car SA 1.6   Lion Finance Group PLC 1.5   Dino Polska SA 1.5   Max Healthcare Institute Ltd 1.4   Qualitas Controladora SAB de CV 1.4   Eicher Motors Ltd 1.3   Equatorial Energia SA 1.3   Shriram Finance Ltd 1.3   Banco de Chile ADR 1.3     14.3  
Fidelity Overseas Fund - Class K  
Shareholder Report [Line Items]  
Fund Name Fidelity® Overseas Fund
Class Name Fidelity® Overseas Fund Class K
Trading Symbol FOSKX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Overseas Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-800-835-5092
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class K 
$ 29 
0.55%
  
Expenses Paid, Amount $ 29
Expense Ratio, Percent 0.55%
Net Assets $ 6,788,264,008
Holdings Count | shares 85
Investment Company Portfolio Turnover 51.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$6,788,264,008
  
Number of Holdings
85
  
Portfolio Turnover
51%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 29.2   Industrials 26.6   Information Technology 12.7   Health Care 8.0   Materials 6.7   Communication Services 6.6   Consumer Discretionary 5.7   Consumer Staples 1.3     Common Stocks 96.8 Short-Term Investments and Net Other Assets (Liabilities) 3.2 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 96.8                       Short-Term Investments and Net Other Assets (Liabilities) - 3.2   United States 18.5 United Kingdom 16.9 Japan 13.7 Germany 12.3 France 11.3 Netherlands 6.1 Italy 3.8 Spain 3.2 Denmark 2.8 Others 11.4 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 18.5                       United Kingdom - 16.9                      Japan - 13.7                               Germany - 12.3                             France - 11.3                              Netherlands - 6.1                          Italy - 3.8                                Spain - 3.2                                Denmark - 2.8                              Others - 11.4                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     SAP SE 3.4   RELX PLC 2.4   Hitachi Ltd 2.4   Allianz SE 2.3   Tokio Marine Holdings Inc 2.2   Safran SA 2.2   London Stock Exchange Group PLC 2.2   Deutsche Boerse AG 2.0   Wolters Kluwer NV 2.0   3i Group PLC 2.0     23.1  
Fidelity Nordic Fund  
Shareholder Report [Line Items]  
Fund Name Fidelity® Nordic Fund
Class Name Fidelity® Nordic Fund
Trading Symbol FNORX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Nordic Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-800-544-8544
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Fidelity® Nordic Fund 
$ 44 
0.88%
  
Expenses Paid, Amount $ 44
Expense Ratio, Percent 0.88%
Net Assets $ 317,298,761
Holdings Count | shares 50
Investment Company Portfolio Turnover 29.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$317,298,761
  
Number of Holdings
50
  
Portfolio Turnover
29%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Industrials 26.8   Financials 24.5   Health Care 13.7   Information Technology 9.5   Materials 5.9   Communication Services 4.8   Consumer Staples 3.5   Consumer Discretionary 2.7   Energy 2.4   Utilities 1.2   Real Estate 0.5     Common Stocks 95.5 Short-Term Investments and Net Other Assets (Liabilities) 4.5 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 95.5                       Short-Term Investments and Net Other Assets (Liabilities) - 4.5   Sweden 44.2 Denmark 24.6 Finland 14.5 Norway 11.9 United States 4.8 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Sweden - 44.2                              Denmark - 24.6                             Finland - 14.5                             Norway - 11.9                              United States - 4.8                           
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Novo Nordisk A/S Series B 11.2   Investor AB B Shares 5.7   Nordea Bank Abp (Sweden) 5.3   DSV A/S 4.6   Atlas Copco AB B Shares 4.5   Saab AB B Shares 4.2   Sandvik AB 3.2   Assa Abloy AB B Shares 2.9   Nokia Oyj 2.9   Lagercrantz Group AB B Shares 2.8     47.3  
Fidelity Advisor International Discovery Fund - Class C  
Shareholder Report [Line Items]  
Fund Name Fidelity® International Discovery Fund
Class Name Fidelity Advisor® International Discovery Fund Class C
Trading Symbol FCADX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® International Discovery Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class C 
$ 85 
1.66%
  
Expenses Paid, Amount $ 85
Expense Ratio, Percent 1.66%
Net Assets $ 10,296,192,153
Holdings Count | shares 135
Investment Company Portfolio Turnover 52.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$10,296,192,153
  
Number of Holdings
135
  
Portfolio Turnover
52%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 25.7   Industrials 23.4   Consumer Discretionary 13.0   Information Technology 12.9   Health Care 7.3   Communication Services 6.7   Materials 3.4   Consumer Staples 2.3   Energy 1.1     Common Stocks 94.9 Preferred Stocks 0.9 Short-Term Investments and Net Other Assets (Liabilities) 4.2 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 94.9                       Preferred Stocks - 0.9                     Short-Term Investments and Net Other Assets (Liabilities) - 4.2   United Kingdom 17.6 Japan 16.1 France 9.9 Germany 9.6 United States 9.0 Italy 5.7 Netherlands 5.7 Canada 3.7 Sweden 3.6 Others 19.1 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United Kingdom - 17.6                      Japan - 16.1                               France - 9.9                               Germany - 9.6                              United States - 9.0                        Italy - 5.7                                Netherlands - 5.7                          Canada - 3.7                               Sweden - 3.6                               Others - 19.1                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     UniCredit SpA 3.4   Rheinmetall AG 2.9   SAP SE 2.8   Hitachi Ltd 2.8   Constellation Software Inc/Canada 2.4   AXA SA 2.3   London Stock Exchange Group PLC 2.1   3i Group PLC 2.0   RELX PLC 1.9   Taiwan Semiconductor Manufacturing Co Ltd 1.9     24.5  
Fidelity Advisor International Growth Fund - Class C  
Shareholder Report [Line Items]  
Fund Name Fidelity® International Growth Fund
Class Name Fidelity Advisor® International Growth Fund Class C
Trading Symbol FIGCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® International Growth Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class C 
$ 96 
1.90%
  
Expenses Paid, Amount $ 96
Expense Ratio, Percent 1.90%
Net Assets $ 6,458,338,721
Holdings Count | shares 71
Investment Company Portfolio Turnover 31.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$6,458,338,721
  
Number of Holdings
71
  
Portfolio Turnover
31%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Industrials 34.2   Financials 17.9   Information Technology 17.2   Consumer Discretionary 10.0   Materials 9.5   Health Care 4.1   Communication Services 2.4   Energy 0.4   Consumer Staples 0.3     Common Stocks 95.8 Preferred Stocks 0.2 Short-Term Investments and Net Other Assets (Liabilities) 4.0 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 95.8                       Preferred Stocks - 0.2                     Short-Term Investments and Net Other Assets (Liabilities) - 4.0   United States 28.4 United Kingdom 14.4 France 12.5 Germany 9.1 Japan 8.8 Sweden 8.1 Netherlands 4.7 Switzerland 3.1 Canada 2.4 Others 8.5 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 28.4                       United Kingdom - 14.4                      France - 12.5                              Germany - 9.1                              Japan - 8.8                                Sweden - 8.1                               Netherlands - 4.7                          Switzerland - 3.1                          Canada - 2.4                               Others - 8.5                                  
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     SAP SE 6.8   Safran SA 4.6   CRH PLC 3.9   ASML Holding NV 3.5   Atlas Copco AB A Shares 3.5   Linde PLC 3.4   Compass Group PLC 3.1   Recruit Holdings Co Ltd 2.8   LVMH Moet Hennessy Louis Vuitton SE 2.6   Experian PLC 2.5     36.7  
Fidelity Advisor Canada Fund - Class I  
Shareholder Report [Line Items]  
Fund Name Fidelity® Canada Fund
Class Name Fidelity Advisor® Canada Fund Class I
Trading Symbol FICCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Canada Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class I 
$ 48 
0.95%
  
Expenses Paid, Amount $ 48
Expense Ratio, Percent 0.95%
Net Assets $ 942,606,561
Holdings Count | shares 68
Investment Company Portfolio Turnover 12.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$942,606,561
  
Number of Holdings
68
  
Portfolio Turnover
12%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 28.2   Energy 15.6   Industrials 12.5   Materials 12.2   Information Technology 11.7   Consumer Staples 8.6   Consumer Discretionary 7.5   Communication Services 2.2   Health Care 0.8   Utilities 0.2     Common Stocks 99.0 Preferred Stocks 0.3 Bonds 0.2 Short-Term Investments and Net Other Assets (Liabilities) 0.5 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 99.0                       Preferred Stocks - 0.3                     Bonds - 0.2                                Short-Term Investments and Net Other Assets (Liabilities) - 0.5   Canada 92.7 United States 3.7 Brazil 3.0 Chile 0.5 Zambia 0.1 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Canada - 92.7                              United States - 3.7                        Brazil - 3.0                               Chile - 0.5                                Zambia - 0.1                                  
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Royal Bank of Canada 7.9   Constellation Software Inc/Canada 6.2   Canadian Pacific Kansas City Ltd 5.0   Alimentation Couche-Tard Inc 4.6   Franco-Nevada Corp 4.5   Toronto Dominion Bank 3.9   Shopify Inc Class A 3.8   Dollarama Inc 3.8   Canadian Natural Resources Ltd 3.7   PrairieSky Royalty Ltd 3.3     46.7  
Fidelity Advisor Europe Fund - Class I  
Shareholder Report [Line Items]  
Fund Name Fidelity® Europe Fund
Class Name Fidelity Advisor® Europe Fund Class I
Trading Symbol FHJMX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Europe Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class I 
$ 38 
0.72%
  
Expenses Paid, Amount $ 38
Expense Ratio, Percent 0.72%
Net Assets $ 738,937,264
Holdings Count | shares 103
Investment Company Portfolio Turnover 42.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$738,937,264
  
Number of Holdings
103
  
Portfolio Turnover
42%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 23.8   Industrials 17.3   Consumer Discretionary 11.5   Health Care 10.1   Information Technology 10.1   Consumer Staples 8.1   Communication Services 7.1   Materials 3.7   Energy 3.6   Real Estate 0.8   Utilities 0.8     Common Stocks 96.8 Preferred Stocks 0.1 Short-Term Investments and Net Other Assets (Liabilities) 3.1 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 96.8                       Preferred Stocks - 0.1                     Short-Term Investments and Net Other Assets (Liabilities) - 3.1   United Kingdom 23.6 Germany 18.4 France 14.9 United States 10.7 Italy 6.5 Sweden 5.4 Netherlands 4.1 Switzerland 3.3 Spain 2.5 Others 10.6 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United Kingdom - 23.6                      Germany - 18.4                             France - 14.9                              United States - 10.7                       Italy - 6.5                                Sweden - 5.4                               Netherlands - 4.1                          Switzerland - 3.3                          Spain - 2.5                                Others - 10.6                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     SAP SE 4.3   Astrazeneca PLC 3.1   RELX PLC 2.6   ASML Holding NV 2.4   Shell PLC 2.3   Rheinmetall AG 2.3   Rolls-Royce Holdings PLC 2.1   UniCredit SpA 1.9   Siemens AG 1.8   Air Liquide SA 1.8     24.6  
Fidelity Advisor International Value Fund - Class I  
Shareholder Report [Line Items]  
Fund Name Fidelity® International Value Fund
Class Name Fidelity Advisor® International Value Fund Class I
Trading Symbol FIVQX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® International Value Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class I 
$ 45 
0.85%
  
Expenses Paid, Amount $ 45
Expense Ratio, Percent 0.85%
Net Assets $ 2,052,754,816
Holdings Count | shares 107
Investment Company Portfolio Turnover 34.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$2,052,754,816
  
Number of Holdings
107
  
Portfolio Turnover
34%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 38.8   Industrials 15.4   Materials 10.2   Energy 6.2   Health Care 5.9   Consumer Discretionary 5.1   Consumer Staples 3.8   Communication Services 3.3   Information Technology 2.7   Utilities 0.7   Real Estate 0.5     Common Stocks 92.4 Preferred Stocks 0.2 Short-Term Investments and Net Other Assets (Liabilities) 7.4 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 92.4                       Preferred Stocks - 0.2                     Short-Term Investments and Net Other Assets (Liabilities) - 7.4   Japan 20.3 United States 17.1 United Kingdom 13.7 Germany 13.4 France 9.8 Italy 4.9 Switzerland 3.7 Australia 3.4 Spain 3.1 Others 10.6 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Japan - 20.3                               United States - 17.1                       United Kingdom - 13.7                      Germany - 13.4                             France - 9.8                               Italy - 4.9                                Switzerland - 3.7                          Australia - 3.4                            Spain - 3.1                                Others - 10.6                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Shell PLC ADR 2.9   AXA SA 2.6   Banco Santander SA 2.5   Rheinmetall AG 2.4   Zurich Insurance Group AG 2.3   Mitsubishi UFJ Financial Group Inc 2.2   Sumitomo Mitsui Financial Group Inc 2.1   Roche Holding AG 2.1   BAE Systems PLC 2.0   Muenchener Rueckversicherungs-Gesellschaft AG in Muenchen 2.0     23.1  
Fidelity Advisor International Discovery Fund - Class A  
Shareholder Report [Line Items]  
Fund Name Fidelity® International Discovery Fund
Class Name Fidelity Advisor® International Discovery Fund Class A
Trading Symbol FAIDX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® International Discovery Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class A 
$ 47 
0.91%
  
Expenses Paid, Amount $ 47
Expense Ratio, Percent 0.91%
Net Assets $ 10,296,192,153
Holdings Count | shares 135
Investment Company Portfolio Turnover 52.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$10,296,192,153
  
Number of Holdings
135
  
Portfolio Turnover
52%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 25.7   Industrials 23.4   Consumer Discretionary 13.0   Information Technology 12.9   Health Care 7.3   Communication Services 6.7   Materials 3.4   Consumer Staples 2.3   Energy 1.1     Common Stocks 94.9 Preferred Stocks 0.9 Short-Term Investments and Net Other Assets (Liabilities) 4.2 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 94.9                       Preferred Stocks - 0.9                     Short-Term Investments and Net Other Assets (Liabilities) - 4.2   United Kingdom 17.6 Japan 16.1 France 9.9 Germany 9.6 United States 9.0 Italy 5.7 Netherlands 5.7 Canada 3.7 Sweden 3.6 Others 19.1 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United Kingdom - 17.6                      Japan - 16.1                               France - 9.9                               Germany - 9.6                              United States - 9.0                        Italy - 5.7                                Netherlands - 5.7                          Canada - 3.7                               Sweden - 3.6                               Others - 19.1                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     UniCredit SpA 3.4   Rheinmetall AG 2.9   SAP SE 2.8   Hitachi Ltd 2.8   Constellation Software Inc/Canada 2.4   AXA SA 2.3   London Stock Exchange Group PLC 2.1   3i Group PLC 2.0   RELX PLC 1.9   Taiwan Semiconductor Manufacturing Co Ltd 1.9     24.5  
Fidelity Advisor Canada Fund - Class M  
Shareholder Report [Line Items]  
Fund Name Fidelity® Canada Fund
Class Name Fidelity Advisor® Canada Fund Class M
Trading Symbol FTCNX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Canada Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class M 
$ 75 
1.47%
  
Expenses Paid, Amount $ 75
Expense Ratio, Percent 1.47%
Net Assets $ 942,606,561
Holdings Count | shares 68
Investment Company Portfolio Turnover 12.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$942,606,561
  
Number of Holdings
68
  
Portfolio Turnover
12%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 28.2   Energy 15.6   Industrials 12.5   Materials 12.2   Information Technology 11.7   Consumer Staples 8.6   Consumer Discretionary 7.5   Communication Services 2.2   Health Care 0.8   Utilities 0.2     Common Stocks 99.0 Preferred Stocks 0.3 Bonds 0.2 Short-Term Investments and Net Other Assets (Liabilities) 0.5 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 99.0                       Preferred Stocks - 0.3                     Bonds - 0.2                                Short-Term Investments and Net Other Assets (Liabilities) - 0.5   Canada 92.7 United States 3.7 Brazil 3.0 Chile 0.5 Zambia 0.1 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Canada - 92.7                              United States - 3.7                        Brazil - 3.0                               Chile - 0.5                                Zambia - 0.1                                  
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Royal Bank of Canada 7.9   Constellation Software Inc/Canada 6.2   Canadian Pacific Kansas City Ltd 5.0   Alimentation Couche-Tard Inc 4.6   Franco-Nevada Corp 4.5   Toronto Dominion Bank 3.9   Shopify Inc Class A 3.8   Dollarama Inc 3.8   Canadian Natural Resources Ltd 3.7   PrairieSky Royalty Ltd 3.3     46.7  
Fidelity Advisor Europe Fund - Class A  
Shareholder Report [Line Items]  
Fund Name Fidelity® Europe Fund
Class Name Fidelity Advisor® Europe Fund Class A
Trading Symbol FHJUX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Europe Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class A 
$ 53 
1.00%
  
Expenses Paid, Amount $ 53
Expense Ratio, Percent 1.00%
Net Assets $ 738,937,264
Holdings Count | shares 103
Investment Company Portfolio Turnover 42.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$738,937,264
  
Number of Holdings
103
  
Portfolio Turnover
42%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 23.8   Industrials 17.3   Consumer Discretionary 11.5   Health Care 10.1   Information Technology 10.1   Consumer Staples 8.1   Communication Services 7.1   Materials 3.7   Energy 3.6   Real Estate 0.8   Utilities 0.8     Common Stocks 96.8 Preferred Stocks 0.1 Short-Term Investments and Net Other Assets (Liabilities) 3.1 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 96.8                       Preferred Stocks - 0.1                     Short-Term Investments and Net Other Assets (Liabilities) - 3.1   United Kingdom 23.6 Germany 18.4 France 14.9 United States 10.7 Italy 6.5 Sweden 5.4 Netherlands 4.1 Switzerland 3.3 Spain 2.5 Others 10.6 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United Kingdom - 23.6                      Germany - 18.4                             France - 14.9                              United States - 10.7                       Italy - 6.5                                Sweden - 5.4                               Netherlands - 4.1                          Switzerland - 3.3                          Spain - 2.5                                Others - 10.6                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     SAP SE 4.3   Astrazeneca PLC 3.1   RELX PLC 2.6   ASML Holding NV 2.4   Shell PLC 2.3   Rheinmetall AG 2.3   Rolls-Royce Holdings PLC 2.1   UniCredit SpA 1.9   Siemens AG 1.8   Air Liquide SA 1.8     24.6  
Fidelity Advisor International Value Fund - Class C  
Shareholder Report [Line Items]  
Fund Name Fidelity® International Value Fund
Class Name Fidelity Advisor® International Value Fund Class C
Trading Symbol FIVOX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® International Value Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class C 
$ 98 
1.85%
  
Expenses Paid, Amount $ 98
Expense Ratio, Percent 1.85%
Net Assets $ 2,052,754,816
Holdings Count | shares 107
Investment Company Portfolio Turnover 34.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$2,052,754,816
  
Number of Holdings
107
  
Portfolio Turnover
34%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 38.8   Industrials 15.4   Materials 10.2   Energy 6.2   Health Care 5.9   Consumer Discretionary 5.1   Consumer Staples 3.8   Communication Services 3.3   Information Technology 2.7   Utilities 0.7   Real Estate 0.5     Common Stocks 92.4 Preferred Stocks 0.2 Short-Term Investments and Net Other Assets (Liabilities) 7.4 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 92.4                       Preferred Stocks - 0.2                     Short-Term Investments and Net Other Assets (Liabilities) - 7.4   Japan 20.3 United States 17.1 United Kingdom 13.7 Germany 13.4 France 9.8 Italy 4.9 Switzerland 3.7 Australia 3.4 Spain 3.1 Others 10.6 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Japan - 20.3                               United States - 17.1                       United Kingdom - 13.7                      Germany - 13.4                             France - 9.8                               Italy - 4.9                                Switzerland - 3.7                          Australia - 3.4                            Spain - 3.1                                Others - 10.6                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Shell PLC ADR 2.9   AXA SA 2.6   Banco Santander SA 2.5   Rheinmetall AG 2.4   Zurich Insurance Group AG 2.3   Mitsubishi UFJ Financial Group Inc 2.2   Sumitomo Mitsui Financial Group Inc 2.1   Roche Holding AG 2.1   BAE Systems PLC 2.0   Muenchener Rueckversicherungs-Gesellschaft AG in Muenchen 2.0     23.1  
Fidelity Advisor International Small Cap Opportunities Fund - Class M  
Shareholder Report [Line Items]  
Fund Name Fidelity® International Small Cap Opportunities Fund
Class Name Fidelity Advisor® International Small Cap Opportunities Fund Class M
Trading Symbol FOPTX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® International Small Cap Opportunities Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class M 
$ 77 
1.49%
  
Expenses Paid, Amount $ 77
Expense Ratio, Percent 1.49%
Net Assets $ 1,340,297,691
Holdings Count | shares 115
Investment Company Portfolio Turnover 30.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$1,340,297,691
  
Number of Holdings
115
  
Portfolio Turnover
30%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Industrials 30.2   Information Technology 21.0   Consumer Discretionary 11.2   Communication Services 7.8   Financials 6.0   Materials 4.5   Health Care 3.7   Consumer Staples 3.2   Real Estate 2.8   Energy 1.1     Common Stocks 91.5 International Equity Funds 4.9 Short-Term Investments and Net Other Assets (Liabilities) 3.6 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 91.5                       International Equity Funds - 4.9           Short-Term Investments and Net Other Assets (Liabilities) - 3.6   Japan 26.5 United Kingdom 15.1 Sweden 14.1 United States 10.9 Germany 5.5 Netherlands 4.7 Canada 4.0 Belgium 2.6 France 2.5 Others 14.1 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Japan - 26.5                               United Kingdom - 15.1                      Sweden - 14.1                              United States - 10.9                       Germany - 5.5                              Netherlands - 4.7                          Canada - 4.0                               Belgium - 2.6                              France - 2.5                               Others - 14.1                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Lagercrantz Group AB B Shares 5.2   iShares MSCI EAFE Small-Cap ETF 4.9   AddTech AB B Shares 4.7   Azbil Corp 3.5   CTS Eventim AG & Co KGaA 2.7   Games Workshop Group PLC 2.2   KBC Ancora 2.1   Interpump Group SpA 2.1   Spectris PLC 2.1   Howden Joinery Group PLC 2.0     31.5  
Fidelity International Discovery Fund - Class K  
Shareholder Report [Line Items]  
Fund Name Fidelity® International Discovery Fund
Class Name Fidelity® International Discovery Fund Class K
Trading Symbol FIDKX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® International Discovery Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-800-835-5092
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class K 
$ 28 
0.55%
  
Expenses Paid, Amount $ 28
Expense Ratio, Percent 0.55%
Net Assets $ 10,296,192,153
Holdings Count | shares 135
Investment Company Portfolio Turnover 52.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$10,296,192,153
  
Number of Holdings
135
  
Portfolio Turnover
52%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 25.7   Industrials 23.4   Consumer Discretionary 13.0   Information Technology 12.9   Health Care 7.3   Communication Services 6.7   Materials 3.4   Consumer Staples 2.3   Energy 1.1     Common Stocks 94.9 Preferred Stocks 0.9 Short-Term Investments and Net Other Assets (Liabilities) 4.2 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 94.9                       Preferred Stocks - 0.9                     Short-Term Investments and Net Other Assets (Liabilities) - 4.2   United Kingdom 17.6 Japan 16.1 France 9.9 Germany 9.6 United States 9.0 Italy 5.7 Netherlands 5.7 Canada 3.7 Sweden 3.6 Others 19.1 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United Kingdom - 17.6                      Japan - 16.1                               France - 9.9                               Germany - 9.6                              United States - 9.0                        Italy - 5.7                                Netherlands - 5.7                          Canada - 3.7                               Sweden - 3.6                               Others - 19.1                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     UniCredit SpA 3.4   Rheinmetall AG 2.9   SAP SE 2.8   Hitachi Ltd 2.8   Constellation Software Inc/Canada 2.4   AXA SA 2.3   London Stock Exchange Group PLC 2.1   3i Group PLC 2.0   RELX PLC 1.9   Taiwan Semiconductor Manufacturing Co Ltd 1.9     24.5  
Fidelity Advisor Total International Equity Fund - Class I  
Shareholder Report [Line Items]  
Fund Name Fidelity® Total International Equity Fund
Class Name Fidelity Advisor® Total International Equity Fund Class I
Trading Symbol FTEIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Total International Equity Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class I 
$ 49 
0.95%
  
Expenses Paid, Amount $ 49
Expense Ratio, Percent 0.95%
Net Assets $ 448,437,698
Holdings Count | shares 317
Investment Company Portfolio Turnover 42.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$448,437,698
  
Number of Holdings
317
  
Portfolio Turnover
42%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 27.2   Industrials 20.7   Information Technology 12.1   Materials 9.9   Consumer Discretionary 9.3   Communication Services 5.6   Health Care 4.8   Energy 3.9   Consumer Staples 3.4   Real Estate 0.2   Utilities 0.2     Common Stocks 97.2 Preferred Stocks 0.1 Short-Term Investments and Net Other Assets (Liabilities) 2.7 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 97.2                       Preferred Stocks - 0.1                     Short-Term Investments and Net Other Assets (Liabilities) - 2.7   United States 13.8 Japan 10.1 United Kingdom 9.8 China 9.7 Germany 7.3 Canada 7.2 France 7.1 Taiwan 3.7 Sweden 3.6 Others 27.7 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 13.8                       Japan - 10.1                               United Kingdom - 9.8                       China - 9.7                                Germany - 7.3                              Canada - 7.2                               France - 7.1                               Taiwan - 3.7                               Sweden - 3.6                               Others - 27.7                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Tencent Holdings Ltd 2.9   Taiwan Semiconductor Manufacturing Co Ltd 2.3   SAP SE 2.1   Samsung Electronics Co Ltd 1.8   CRH PLC 1.8   Safran SA 1.5   Linde PLC 1.4   BAE Systems PLC 1.3   Alibaba Group Holding Ltd ADR 1.1   Wal-Mart de Mexico SAB de CV Series V 1.1     17.3  
Fidelity Advisor Europe Fund - Class M  
Shareholder Report [Line Items]  
Fund Name Fidelity® Europe Fund
Class Name Fidelity Advisor® Europe Fund Class M
Trading Symbol FHJVX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Europe Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class M 
$ 66 
1.25%
  
Expenses Paid, Amount $ 66
Expense Ratio, Percent 1.25%
Net Assets $ 738,937,264
Holdings Count | shares 103
Investment Company Portfolio Turnover 42.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$738,937,264
  
Number of Holdings
103
  
Portfolio Turnover
42%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 23.8   Industrials 17.3   Consumer Discretionary 11.5   Health Care 10.1   Information Technology 10.1   Consumer Staples 8.1   Communication Services 7.1   Materials 3.7   Energy 3.6   Real Estate 0.8   Utilities 0.8     Common Stocks 96.8 Preferred Stocks 0.1 Short-Term Investments and Net Other Assets (Liabilities) 3.1 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 96.8                       Preferred Stocks - 0.1                     Short-Term Investments and Net Other Assets (Liabilities) - 3.1   United Kingdom 23.6 Germany 18.4 France 14.9 United States 10.7 Italy 6.5 Sweden 5.4 Netherlands 4.1 Switzerland 3.3 Spain 2.5 Others 10.6 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United Kingdom - 23.6                      Germany - 18.4                             France - 14.9                              United States - 10.7                       Italy - 6.5                                Sweden - 5.4                               Netherlands - 4.1                          Switzerland - 3.3                          Spain - 2.5                                Others - 10.6                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     SAP SE 4.3   Astrazeneca PLC 3.1   RELX PLC 2.6   ASML Holding NV 2.4   Shell PLC 2.3   Rheinmetall AG 2.3   Rolls-Royce Holdings PLC 2.1   UniCredit SpA 1.9   Siemens AG 1.8   Air Liquide SA 1.8     24.6  
Fidelity Advisor Total International Equity Fund - Class C  
Shareholder Report [Line Items]  
Fund Name Fidelity® Total International Equity Fund
Class Name Fidelity Advisor® Total International Equity Fund Class C
Trading Symbol FTCEX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Total International Equity Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class C 
$ 100 
1.95%
  
Expenses Paid, Amount $ 100
Expense Ratio, Percent 1.95%
Net Assets $ 448,437,698
Holdings Count | shares 317
Investment Company Portfolio Turnover 42.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$448,437,698
  
Number of Holdings
317
  
Portfolio Turnover
42%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 27.2   Industrials 20.7   Information Technology 12.1   Materials 9.9   Consumer Discretionary 9.3   Communication Services 5.6   Health Care 4.8   Energy 3.9   Consumer Staples 3.4   Real Estate 0.2   Utilities 0.2     Common Stocks 97.2 Preferred Stocks 0.1 Short-Term Investments and Net Other Assets (Liabilities) 2.7 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 97.2                       Preferred Stocks - 0.1                     Short-Term Investments and Net Other Assets (Liabilities) - 2.7   United States 13.8 Japan 10.1 United Kingdom 9.8 China 9.7 Germany 7.3 Canada 7.2 France 7.1 Taiwan 3.7 Sweden 3.6 Others 27.7 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 13.8                       Japan - 10.1                               United Kingdom - 9.8                       China - 9.7                                Germany - 7.3                              Canada - 7.2                               France - 7.1                               Taiwan - 3.7                               Sweden - 3.6                               Others - 27.7                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Tencent Holdings Ltd 2.9   Taiwan Semiconductor Manufacturing Co Ltd 2.3   SAP SE 2.1   Samsung Electronics Co Ltd 1.8   CRH PLC 1.8   Safran SA 1.5   Linde PLC 1.4   BAE Systems PLC 1.3   Alibaba Group Holding Ltd ADR 1.1   Wal-Mart de Mexico SAB de CV Series V 1.1     17.3  
Fidelity Emerging Asia Fund  
Shareholder Report [Line Items]  
Fund Name Fidelity® Emerging Asia Fund
Class Name Fidelity® Emerging Asia Fund
Trading Symbol FSEAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Emerging Asia Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-800-544-8544
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Fidelity® Emerging Asia Fund 
$ 50 
1.01%
  
Expenses Paid, Amount $ 50
Expense Ratio, Percent 1.01%
Net Assets $ 998,742,954
Holdings Count | shares 140
Investment Company Portfolio Turnover 77.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$998,742,954
  
Number of Holdings
140
  
Portfolio Turnover
77%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Information Technology 25.1   Consumer Discretionary 22.4   Communication Services 14.7   Industrials 13.0   Financials 12.1   Health Care 10.3   Energy 0.9   Consumer Staples 0.4   Materials 0.1     Common Stocks 98.2 Preferred Stocks 0.8 Short-Term Investments and Net Other Assets (Liabilities) 1.0 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 98.2                       Preferred Stocks - 0.8                     Short-Term Investments and Net Other Assets (Liabilities) - 1.0   China 36.8 India 28.2 Taiwan 15.3 Singapore 6.7 Korea (South) 6.1 Hong Kong 2.4 United States 1.4 Indonesia 0.9 South Africa 0.6 Others 1.6 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     China - 36.8                               India - 28.2                               Taiwan - 15.3                              Singapore - 6.7                            Korea (South) - 6.1                        Hong Kong - 2.4                            United States - 1.4                        Indonesia - 0.9                            South Africa - 0.6                         Others - 1.6                                  
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Taiwan Semiconductor Manufacturing Co Ltd 9.8   Sea Ltd Class A ADR 6.3   Tencent Holdings Ltd 5.8   Eternal Ltd 5.2   PDD Holdings Inc Class A ADR 4.2   MakeMyTrip Ltd 4.1   Taiwan Semiconductor Manufacturing Co Ltd ADR 3.3   Advanced Micro-Fabrication Equipment Inc China A Shares (China) 2.7   HDFC Bank Ltd 2.3   WuXi XDC Cayman Inc 1.8     45.5  
Fidelity Total International Equity Fund  
Shareholder Report [Line Items]  
Fund Name Fidelity® Total International Equity Fund
Class Name Fidelity® Total International Equity Fund
Trading Symbol FTIEX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Total International Equity Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-800-544-8544
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Fidelity® Total International Equity Fund 
$ 48 
0.95%
  
Expenses Paid, Amount $ 48
Expense Ratio, Percent 0.95%
Net Assets $ 448,437,698
Holdings Count | shares 317
Investment Company Portfolio Turnover 42.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$448,437,698
  
Number of Holdings
317
  
Portfolio Turnover
42%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 27.2   Industrials 20.7   Information Technology 12.1   Materials 9.9   Consumer Discretionary 9.3   Communication Services 5.6   Health Care 4.8   Energy 3.9   Consumer Staples 3.4   Real Estate 0.2   Utilities 0.2     Common Stocks 97.2 Preferred Stocks 0.1 Short-Term Investments and Net Other Assets (Liabilities) 2.7 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 97.2                       Preferred Stocks - 0.1                     Short-Term Investments and Net Other Assets (Liabilities) - 2.7   United States 13.8 Japan 10.1 United Kingdom 9.8 China 9.7 Germany 7.3 Canada 7.2 France 7.1 Taiwan 3.7 Sweden 3.6 Others 27.7 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 13.8                       Japan - 10.1                               United Kingdom - 9.8                       China - 9.7                                Germany - 7.3                              Canada - 7.2                               France - 7.1                               Taiwan - 3.7                               Sweden - 3.6                               Others - 27.7                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Tencent Holdings Ltd 2.9   Taiwan Semiconductor Manufacturing Co Ltd 2.3   SAP SE 2.1   Samsung Electronics Co Ltd 1.8   CRH PLC 1.8   Safran SA 1.5   Linde PLC 1.4   BAE Systems PLC 1.3   Alibaba Group Holding Ltd ADR 1.1   Wal-Mart de Mexico SAB de CV Series V 1.1     17.3  
Fidelity Advisor Total International Equity Fund - Class M  
Shareholder Report [Line Items]  
Fund Name Fidelity® Total International Equity Fund
Class Name Fidelity Advisor® Total International Equity Fund Class M
Trading Symbol FTTEX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Total International Equity Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class M 
$ 74 
1.45%
  
Expenses Paid, Amount $ 74
Expense Ratio, Percent 1.45%
Net Assets $ 448,437,698
Holdings Count | shares 317
Investment Company Portfolio Turnover 42.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$448,437,698
  
Number of Holdings
317
  
Portfolio Turnover
42%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 27.2   Industrials 20.7   Information Technology 12.1   Materials 9.9   Consumer Discretionary 9.3   Communication Services 5.6   Health Care 4.8   Energy 3.9   Consumer Staples 3.4   Real Estate 0.2   Utilities 0.2     Common Stocks 97.2 Preferred Stocks 0.1 Short-Term Investments and Net Other Assets (Liabilities) 2.7 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 97.2                       Preferred Stocks - 0.1                     Short-Term Investments and Net Other Assets (Liabilities) - 2.7   United States 13.8 Japan 10.1 United Kingdom 9.8 China 9.7 Germany 7.3 Canada 7.2 France 7.1 Taiwan 3.7 Sweden 3.6 Others 27.7 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 13.8                       Japan - 10.1                               United Kingdom - 9.8                       China - 9.7                                Germany - 7.3                              Canada - 7.2                               France - 7.1                               Taiwan - 3.7                               Sweden - 3.6                               Others - 27.7                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Tencent Holdings Ltd 2.9   Taiwan Semiconductor Manufacturing Co Ltd 2.3   SAP SE 2.1   Samsung Electronics Co Ltd 1.8   CRH PLC 1.8   Safran SA 1.5   Linde PLC 1.4   BAE Systems PLC 1.3   Alibaba Group Holding Ltd ADR 1.1   Wal-Mart de Mexico SAB de CV Series V 1.1     17.3  
Fidelity Advisor Japan Fund - Class A  
Shareholder Report [Line Items]  
Fund Name Fidelity® Japan Fund
Class Name Fidelity Advisor® Japan Fund Class A
Trading Symbol FPJAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Japan Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class A 
$ 50 
0.98%
  
Expenses Paid, Amount $ 50
Expense Ratio, Percent 0.98%
Net Assets $ 710,338,465
Holdings Count | shares 86
Investment Company Portfolio Turnover 31.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$710,338,465
  
Number of Holdings
86
  
Portfolio Turnover
31%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Industrials 28.4   Information Technology 19.0   Financials 15.1   Consumer Discretionary 11.6   Communication Services 6.8   Materials 6.4   Health Care 5.5   Consumer Staples 2.5   Real Estate 1.1   Energy 1.0     Common Stocks 97.4 Short-Term Investments and Net Other Assets (Liabilities) 2.6 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 97.4                       Short-Term Investments and Net Other Assets (Liabilities) - 2.6   Japan 96.7 United States 3.1 China 0.2 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Japan - 96.7                               United States - 3.1                        China - 0.2                                   
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Sumitomo Mitsui Financial Group Inc 6.4   Sony Group Corp 5.1   Hitachi Ltd 4.8   Fujitsu Ltd 3.0   Tokio Marine Holdings Inc 2.9   Hoya Corp 2.9   ORIX Corp 2.8   Nintendo Co Ltd 2.8   Shin-Etsu Chemical Co Ltd 2.7   FUJIFILM Holdings Corp 2.5     35.9  
Fidelity Europe Fund  
Shareholder Report [Line Items]  
Fund Name Fidelity® Europe Fund
Class Name Fidelity® Europe Fund
Trading Symbol FIEUX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Europe Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-800-544-8544
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Fidelity® Europe Fund 
$ 38 
0.71%
  
Expenses Paid, Amount $ 38
Expense Ratio, Percent 0.71%
Net Assets $ 738,937,264
Holdings Count | shares 103
Investment Company Portfolio Turnover 42.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$738,937,264
  
Number of Holdings
103
  
Portfolio Turnover
42%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 23.8   Industrials 17.3   Consumer Discretionary 11.5   Health Care 10.1   Information Technology 10.1   Consumer Staples 8.1   Communication Services 7.1   Materials 3.7   Energy 3.6   Real Estate 0.8   Utilities 0.8     Common Stocks 96.8 Preferred Stocks 0.1 Short-Term Investments and Net Other Assets (Liabilities) 3.1 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 96.8                       Preferred Stocks - 0.1                     Short-Term Investments and Net Other Assets (Liabilities) - 3.1   United Kingdom 23.6 Germany 18.4 France 14.9 United States 10.7 Italy 6.5 Sweden 5.4 Netherlands 4.1 Switzerland 3.3 Spain 2.5 Others 10.6 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United Kingdom - 23.6                      Germany - 18.4                             France - 14.9                              United States - 10.7                       Italy - 6.5                                Sweden - 5.4                               Netherlands - 4.1                          Switzerland - 3.3                          Spain - 2.5                                Others - 10.6                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     SAP SE 4.3   Astrazeneca PLC 3.1   RELX PLC 2.6   ASML Holding NV 2.4   Shell PLC 2.3   Rheinmetall AG 2.3   Rolls-Royce Holdings PLC 2.1   UniCredit SpA 1.9   Siemens AG 1.8   Air Liquide SA 1.8     24.6  
Fidelity Advisor Emerging Markets Discovery Fund - Class A  
Shareholder Report [Line Items]  
Fund Name Fidelity® Emerging Markets Discovery Fund
Class Name Fidelity Advisor® Emerging Markets Discovery Fund Class A
Trading Symbol FEDAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity® Emerging Markets Discovery Fund for the period November 1, 2024 to April 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-877-208-0098 or by sending an e-mail to fidfunddocuments@fidelity.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email fidfunddocuments@fidelity.com
Additional Information Website fundresearch.fidelity.com/prospectus/sec
Expenses [Text Block] What were your Fund costs for the last six months?
(based on hypothetical $10,000 investment)
 
 
 
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
 
Class A 
$ 63 
1.27%
  
Expenses Paid, Amount $ 63
Expense Ratio, Percent 1.27%
Net Assets $ 1,026,456,466
Holdings Count | shares 103
Investment Company Portfolio Turnover 38.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$1,026,456,466
  
Number of Holdings
103
  
Portfolio Turnover
38%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Industrials 22.1   Financials 18.6   Consumer Discretionary 16.1   Consumer Staples 10.9   Information Technology 10.3   Health Care 4.7   Real Estate 4.3   Communication Services 3.6   Energy 2.9   Utilities 2.4   Materials 2.1     Common Stocks 98.0 Short-Term Investments and Net Other Assets (Liabilities) 2.0 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 98.0                       Short-Term Investments and Net Other Assets (Liabilities) - 2.0   Taiwan 17.8 China 17.5 Brazil 13.1 India 11.9 Korea (South) 7.6 Mexico 5.5 Indonesia 4.1 United States 3.3 Poland 2.7 Others 16.5 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Taiwan - 17.8                              China - 17.5                               Brazil - 13.1                              India - 11.9                               Korea (South) - 7.6                        Mexico - 5.5                               Indonesia - 4.1                            United States - 3.3                        Poland - 2.7                               Others - 16.5                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     OPAP SA 1.7   Localiza Rent a Car SA 1.6   Lion Finance Group PLC 1.5   Dino Polska SA 1.5   Max Healthcare Institute Ltd 1.4   Qualitas Controladora SAB de CV 1.4   Eicher Motors Ltd 1.3   Equatorial Energia SA 1.3   Shriram Finance Ltd 1.3   Banco de Chile ADR 1.3     14.3