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 Advisor Series VIII
Entity Central Index Key 0000729218
Entity Investment Company Type N-1A
Document Period End Date Apr. 30, 2025
Fidelity Advisor Overseas Fund - Class M  
Shareholder Report [Line Items]  
Fund Name Fidelity Advisor® Overseas Fund
Class Name Fidelity Advisor® Overseas Fund Class M
Trading Symbol FAERX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity Advisor® 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 1-877-208-0098 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 
1.27%
  
Expenses Paid, Amount $ 66
Expense Ratio, Percent 1.27%
Net Assets $ 412,238,315
Holdings Count | shares 85
Investment Company Portfolio Turnover 49.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$412,238,315
  
Number of Holdings
85
  
Portfolio Turnover
49%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 29.0   Industrials 26.7   Information Technology 12.8   Health Care 8.3   Materials 6.8   Communication Services 6.5   Consumer Discretionary 5.7   Consumer Staples 1.3     Common Stocks 97.1 Short-Term Investments and Net Other Assets (Liabilities) 2.9 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 97.1                       Short-Term Investments and Net Other Assets (Liabilities) - 2.9   United States 18.0 United Kingdom 16.8 Japan 13.6 Germany 12.2 France 11.3 Netherlands 6.4 Italy 4.2 Spain 3.2 Sweden 2.9 Others 11.4 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 18.0                       United Kingdom - 16.8                      Japan - 13.6                               Germany - 12.2                             France - 11.3                              Netherlands - 6.4                          Italy - 4.2                                Spain - 3.2                                Sweden - 2.9                               Others - 11.4                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     SAP SE 3.4   RELX PLC 2.4   Hitachi Ltd 2.3   Allianz SE 2.2   Tokio Marine Holdings Inc 2.2   Safran SA 2.2   London Stock Exchange Group PLC 2.1   Wolters Kluwer NV 2.1   Deutsche Boerse AG 2.0   3i Group PLC 2.0     22.9  
Fidelity Advisor International Capital Appreciation Fund - Class A  
Shareholder Report [Line Items]  
Fund Name Fidelity Advisor® International Capital Appreciation Fund
Class Name Fidelity Advisor® International Capital Appreciation Fund Class A
Trading Symbol FCPAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity Advisor® 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 1-877-208-0098 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 
1.14%
  
Expenses Paid, Amount $ 58
Expense Ratio, Percent 1.14%
Net Assets $ 9,841,053,187
Holdings Count | shares 63
Investment Company Portfolio Turnover 86.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$9,841,053,187
  
Number of Holdings
63
  
Portfolio Turnover
86%
  
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 Overseas Fund - Class I  
Shareholder Report [Line Items]  
Fund Name Fidelity Advisor® Overseas Fund
Class Name Fidelity Advisor® Overseas Fund Class I
Trading Symbol FAOIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity Advisor® 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 1-877-208-0098 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 
$ 39 
0.76%
  
Expenses Paid, Amount $ 39
Expense Ratio, Percent 0.76%
Net Assets $ 412,238,315
Holdings Count | shares 85
Investment Company Portfolio Turnover 49.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$412,238,315
  
Number of Holdings
85
  
Portfolio Turnover
49%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 29.0   Industrials 26.7   Information Technology 12.8   Health Care 8.3   Materials 6.8   Communication Services 6.5   Consumer Discretionary 5.7   Consumer Staples 1.3     Common Stocks 97.1 Short-Term Investments and Net Other Assets (Liabilities) 2.9 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 97.1                       Short-Term Investments and Net Other Assets (Liabilities) - 2.9   United States 18.0 United Kingdom 16.8 Japan 13.6 Germany 12.2 France 11.3 Netherlands 6.4 Italy 4.2 Spain 3.2 Sweden 2.9 Others 11.4 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 18.0                       United Kingdom - 16.8                      Japan - 13.6                               Germany - 12.2                             France - 11.3                              Netherlands - 6.4                          Italy - 4.2                                Spain - 3.2                                Sweden - 2.9                               Others - 11.4                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     SAP SE 3.4   RELX PLC 2.4   Hitachi Ltd 2.3   Allianz SE 2.2   Tokio Marine Holdings Inc 2.2   Safran SA 2.2   London Stock Exchange Group PLC 2.1   Wolters Kluwer NV 2.1   Deutsche Boerse AG 2.0   3i Group PLC 2.0     22.9  
Fidelity Advisor Emerging Asia Fund - Class Z  
Shareholder Report [Line Items]  
Fund Name Fidelity Advisor® Emerging Asia Fund
Class Name Fidelity Advisor® Emerging Asia Fund Class Z
Trading Symbol FIQPX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity Advisor® 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 1-877-208-0098 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 
0.83%
  
Expenses Paid, Amount $ 41
Expense Ratio, Percent 0.83%
Net Assets $ 436,140,299
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
$436,140,299
  
Number of Holdings
140
  
Portfolio Turnover
77%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Information Technology 24.9   Consumer Discretionary 22.0   Communication Services 14.6   Financials 13.2   Industrials 13.0   Health Care 10.4   Energy 0.9   Consumer Staples 0.5   Materials 0.1     Common Stocks 98.6 Preferred Stocks 1.0 Short-Term Investments and Net Other Assets (Liabilities) 0.4 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 98.6                       Preferred Stocks - 1.0                     Short-Term Investments and Net Other Assets (Liabilities) - 0.4   China 36.9 India 28.9 Taiwan 15.1 Singapore 6.5 Korea (South) 6.2 Hong Kong 2.4 Indonesia 0.9 United States 0.8 Japan 0.6 Others 1.7 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     China - 36.9                               India - 28.9                               Taiwan - 15.1                              Singapore - 6.5                            Korea (South) - 6.2                        Hong Kong - 2.4                            Indonesia - 0.9                            United States - 0.8                        Japan - 0.6                                Others - 1.7                                  
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Taiwan Semiconductor Manufacturing Co Ltd 10.0   Sea Ltd Class A ADR 6.1   Tencent Holdings Ltd 5.8   Eternal Ltd 5.0   PDD Holdings Inc Class A ADR 4.1   MakeMyTrip Ltd 3.9   HDFC Bank Ltd 3.4   Taiwan Semiconductor Manufacturing Co Ltd ADR 3.0   Advanced Micro-Fabrication Equipment Inc China A Shares (China) 2.7   WuXi XDC Cayman Inc 1.8     45.8  
Fidelity Advisor Emerging Asia Fund - Class M  
Shareholder Report [Line Items]  
Fund Name Fidelity Advisor® Emerging Asia Fund
Class Name Fidelity Advisor® Emerging Asia Fund Class M
Trading Symbol FEATX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity Advisor® 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 1-877-208-0098 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 
1.49%
  
Expenses Paid, Amount $ 74
Expense Ratio, Percent 1.49%
Net Assets $ 436,140,299
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
$436,140,299
  
Number of Holdings
140
  
Portfolio Turnover
77%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Information Technology 24.9   Consumer Discretionary 22.0   Communication Services 14.6   Financials 13.2   Industrials 13.0   Health Care 10.4   Energy 0.9   Consumer Staples 0.5   Materials 0.1     Common Stocks 98.6 Preferred Stocks 1.0 Short-Term Investments and Net Other Assets (Liabilities) 0.4 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 98.6                       Preferred Stocks - 1.0                     Short-Term Investments and Net Other Assets (Liabilities) - 0.4   China 36.9 India 28.9 Taiwan 15.1 Singapore 6.5 Korea (South) 6.2 Hong Kong 2.4 Indonesia 0.9 United States 0.8 Japan 0.6 Others 1.7 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     China - 36.9                               India - 28.9                               Taiwan - 15.1                              Singapore - 6.5                            Korea (South) - 6.2                        Hong Kong - 2.4                            Indonesia - 0.9                            United States - 0.8                        Japan - 0.6                                Others - 1.7                                  
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Taiwan Semiconductor Manufacturing Co Ltd 10.0   Sea Ltd Class A ADR 6.1   Tencent Holdings Ltd 5.8   Eternal Ltd 5.0   PDD Holdings Inc Class A ADR 4.1   MakeMyTrip Ltd 3.9   HDFC Bank Ltd 3.4   Taiwan Semiconductor Manufacturing Co Ltd ADR 3.0   Advanced Micro-Fabrication Equipment Inc China A Shares (China) 2.7   WuXi XDC Cayman Inc 1.8     45.8  
Fidelity Advisor International Capital Appreciation Fund - Class I  
Shareholder Report [Line Items]  
Fund Name Fidelity Advisor® International Capital Appreciation Fund
Class Name Fidelity Advisor® International Capital Appreciation Fund Class I
Trading Symbol FCPIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity Advisor® 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 1-877-208-0098 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 
0.89%
  
Expenses Paid, Amount $ 45
Expense Ratio, Percent 0.89%
Net Assets $ 9,841,053,187
Holdings Count | shares 63
Investment Company Portfolio Turnover 86.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$9,841,053,187
  
Number of Holdings
63
  
Portfolio Turnover
86%
  
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 Diversified International Fund - Class Z  
Shareholder Report [Line Items]  
Fund Name Fidelity Advisor® Diversified International Fund
Class Name Fidelity Advisor® Diversified International Fund Class Z
Trading Symbol FZABX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity Advisor® 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 1-877-208-0098 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 
$ 37 
0.73%
  
Expenses Paid, Amount $ 37
Expense Ratio, Percent 0.73%
Net Assets $ 1,440,576,387
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
$1,440,576,387
  
Number of Holdings
139
  
Portfolio Turnover
37%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 27.3   Industrials 27.0   Information Technology 10.9   Health Care 8.9   Materials 8.2   Consumer Discretionary 8.0   Energy 3.0   Communication Services 2.5   Consumer Staples 0.8     Common Stocks 96.0 Preferred Stocks 0.6 Short-Term Investments and Net Other Assets (Liabilities) 3.4 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 96.0                       Preferred Stocks - 0.6                     Short-Term Investments and Net Other Assets (Liabilities) - 3.4   Japan 17.6 United Kingdom 15.8 United States 14.5 Germany 11.8 France 9.3 Canada 4.9 Netherlands 4.3 Sweden 3.1 Italy 3.0 Others 15.7 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Japan - 17.6                               United Kingdom - 15.8                      United States - 14.5                       Germany - 11.8                             France - 9.3                               Canada - 4.9                               Netherlands - 4.3                          Sweden - 3.1                               Italy - 3.0                                Others - 15.7                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     SAP SE 2.8   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 1.5     19.4  
Fidelity Advisor Global Capital Appreciation Fund - Class M  
Shareholder Report [Line Items]  
Fund Name Fidelity Advisor® Global Capital Appreciation Fund
Class Name Fidelity Advisor® Global Capital Appreciation Fund Class M
Trading Symbol FGETX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity Advisor® Global 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 1-877-208-0098 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 
1.55%
  
Expenses Paid, Amount $ 76
Expense Ratio, Percent 1.55%
Net Assets $ 134,591,118
Holdings Count | shares 58
Investment Company Portfolio Turnover 71.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$134,591,118
  
Number of Holdings
58
  
Portfolio Turnover
71%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 28.2   Industrials 19.5   Information Technology 17.2   Consumer Discretionary 9.4   Communication Services 6.9   Health Care 4.7   Materials 2.8   Energy 2.7   Consumer Staples 1.2     Common Stocks 92.1 Preferred Stocks 0.5 Short-Term Investments and Net Other Assets (Liabilities) 7.4 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 92.1                       Preferred Stocks - 0.5                     Short-Term Investments and Net Other Assets (Liabilities) - 7.4   United States 76.6 China 4.4 Japan 3.0 India 2.7 Taiwan 2.1 Germany 1.8 Denmark 1.5 Canada 1.3 United Kingdom 1.3 Others 5.3 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 76.6                       China - 4.4                                Japan - 3.0                                India - 2.7                                Taiwan - 2.1                               Germany - 1.8                              Denmark - 1.5                              Canada - 1.3                               United Kingdom - 1.3                       Others - 5.3                                  
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Microsoft Corp 5.1   Amazon.com Inc 4.4   Meta Platforms Inc Class A 3.8   Visa Inc Class A 3.2   NVIDIA Corp 3.0   Mastercard Inc Class A 3.0   Hitachi Ltd 3.0   JPMorgan Chase & Co 2.8   Boston Scientific Corp 2.8   Charles Schwab Corp/The 2.4     33.5  
Fidelity Advisor International Capital Appreciation Fund - Class C  
Shareholder Report [Line Items]  
Fund Name Fidelity Advisor® International Capital Appreciation Fund
Class Name Fidelity Advisor® International Capital Appreciation Fund Class C
Trading Symbol FCPCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity Advisor® 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 1-877-208-0098 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 
1.89%
  
Expenses Paid, Amount $ 96
Expense Ratio, Percent 1.89%
Net Assets $ 9,841,053,187
Holdings Count | shares 63
Investment Company Portfolio Turnover 86.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$9,841,053,187
  
Number of Holdings
63
  
Portfolio Turnover
86%
  
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 Focused Emerging Markets Fund - Class C  
Shareholder Report [Line Items]  
Fund Name Fidelity Advisor® Focused Emerging Markets Fund
Class Name Fidelity Advisor® Focused Emerging Markets Fund Class C
Trading Symbol FMCKX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity Advisor® Focused 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 
$ 95 
1.93%
  
Expenses Paid, Amount $ 95
Expense Ratio, Percent 1.93%
Net Assets $ 7,291,683,869
Holdings Count | shares 56
Investment Company Portfolio Turnover 61.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$7,291,683,869
  
Number of Holdings
56
  
Portfolio Turnover
61%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 24.7   Information Technology 16.1   Consumer Discretionary 13.5   Communication Services 11.3   Industrials 10.4   Materials 9.9   Consumer Staples 5.4   Health Care 4.7   Energy 3.3     Common Stocks 99.3 Short-Term Investments and Net Other Assets (Liabilities) 0.7 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 99.3                       Short-Term Investments and Net Other Assets (Liabilities) - 0.7   China 32.8 Taiwan 10.9 Korea (South) 9.3 India 8.6 Brazil 8.5 Mexico 7.8 South Africa 4.0 Greece 3.4 Hungary 2.9 Others 11.8 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     China - 32.8                               Taiwan - 10.9                              Korea (South) - 9.3                        India - 8.6                                Brazil - 8.5                               Mexico - 7.8                               South Africa - 4.0                         Greece - 3.4                               Hungary - 2.9                              Others - 11.8                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Tencent Holdings Ltd 9.3   Samsung Electronics Co Ltd 6.4   Taiwan Semiconductor Manufacturing Co Ltd 5.8   Alibaba Group Holding Ltd ADR 4.1   Wal-Mart de Mexico SAB de CV Series V 3.9   Shenzhen Inovance Technology Co Ltd A Shares (China) 2.7   China Life Insurance Co Ltd H Shares 2.6   Itau Unibanco Holding SA 2.5   HDFC Bank Ltd 2.5   Credicorp Ltd 2.2     42.0  
Fidelity Advisor Diversified International Fund - Class M  
Shareholder Report [Line Items]  
Fund Name Fidelity Advisor® Diversified International Fund
Class Name Fidelity Advisor® Diversified International Fund Class M
Trading Symbol FADIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity Advisor® 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 1-877-208-0098 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 
1.37%
  
Expenses Paid, Amount $ 70
Expense Ratio, Percent 1.37%
Net Assets $ 1,440,576,387
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
$1,440,576,387
  
Number of Holdings
139
  
Portfolio Turnover
37%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 27.3   Industrials 27.0   Information Technology 10.9   Health Care 8.9   Materials 8.2   Consumer Discretionary 8.0   Energy 3.0   Communication Services 2.5   Consumer Staples 0.8     Common Stocks 96.0 Preferred Stocks 0.6 Short-Term Investments and Net Other Assets (Liabilities) 3.4 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 96.0                       Preferred Stocks - 0.6                     Short-Term Investments and Net Other Assets (Liabilities) - 3.4   Japan 17.6 United Kingdom 15.8 United States 14.5 Germany 11.8 France 9.3 Canada 4.9 Netherlands 4.3 Sweden 3.1 Italy 3.0 Others 15.7 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Japan - 17.6                               United Kingdom - 15.8                      United States - 14.5                       Germany - 11.8                             France - 9.3                               Canada - 4.9                               Netherlands - 4.3                          Sweden - 3.1                               Italy - 3.0                                Others - 15.7                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     SAP SE 2.8   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 1.5     19.4  
Fidelity Advisor Global Capital Appreciation Fund - Class I  
Shareholder Report [Line Items]  
Fund Name Fidelity Advisor® Global Capital Appreciation Fund
Class Name Fidelity Advisor® Global Capital Appreciation Fund Class I
Trading Symbol FEUIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity Advisor® Global 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 1-877-208-0098 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 
1.05%
  
Expenses Paid, Amount $ 51
Expense Ratio, Percent 1.05%
Net Assets $ 134,591,118
Holdings Count | shares 58
Investment Company Portfolio Turnover 71.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$134,591,118
  
Number of Holdings
58
  
Portfolio Turnover
71%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 28.2   Industrials 19.5   Information Technology 17.2   Consumer Discretionary 9.4   Communication Services 6.9   Health Care 4.7   Materials 2.8   Energy 2.7   Consumer Staples 1.2     Common Stocks 92.1 Preferred Stocks 0.5 Short-Term Investments and Net Other Assets (Liabilities) 7.4 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 92.1                       Preferred Stocks - 0.5                     Short-Term Investments and Net Other Assets (Liabilities) - 7.4   United States 76.6 China 4.4 Japan 3.0 India 2.7 Taiwan 2.1 Germany 1.8 Denmark 1.5 Canada 1.3 United Kingdom 1.3 Others 5.3 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 76.6                       China - 4.4                                Japan - 3.0                                India - 2.7                                Taiwan - 2.1                               Germany - 1.8                              Denmark - 1.5                              Canada - 1.3                               United Kingdom - 1.3                       Others - 5.3                                  
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Microsoft Corp 5.1   Amazon.com Inc 4.4   Meta Platforms Inc Class A 3.8   Visa Inc Class A 3.2   NVIDIA Corp 3.0   Mastercard Inc Class A 3.0   Hitachi Ltd 3.0   JPMorgan Chase & Co 2.8   Boston Scientific Corp 2.8   Charles Schwab Corp/The 2.4     33.5  
Fidelity Advisor Global Capital Appreciation Fund - Class C  
Shareholder Report [Line Items]  
Fund Name Fidelity Advisor® Global Capital Appreciation Fund
Class Name Fidelity Advisor® Global Capital Appreciation Fund Class C
Trading Symbol FEUCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity Advisor® Global 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 1-877-208-0098 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 
2.05%
  
Expenses Paid, Amount $ 100
Expense Ratio, Percent 2.05%
Net Assets $ 134,591,118
Holdings Count | shares 58
Investment Company Portfolio Turnover 71.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$134,591,118
  
Number of Holdings
58
  
Portfolio Turnover
71%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 28.2   Industrials 19.5   Information Technology 17.2   Consumer Discretionary 9.4   Communication Services 6.9   Health Care 4.7   Materials 2.8   Energy 2.7   Consumer Staples 1.2     Common Stocks 92.1 Preferred Stocks 0.5 Short-Term Investments and Net Other Assets (Liabilities) 7.4 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 92.1                       Preferred Stocks - 0.5                     Short-Term Investments and Net Other Assets (Liabilities) - 7.4   United States 76.6 China 4.4 Japan 3.0 India 2.7 Taiwan 2.1 Germany 1.8 Denmark 1.5 Canada 1.3 United Kingdom 1.3 Others 5.3 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 76.6                       China - 4.4                                Japan - 3.0                                India - 2.7                                Taiwan - 2.1                               Germany - 1.8                              Denmark - 1.5                              Canada - 1.3                               United Kingdom - 1.3                       Others - 5.3                                  
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Microsoft Corp 5.1   Amazon.com Inc 4.4   Meta Platforms Inc Class A 3.8   Visa Inc Class A 3.2   NVIDIA Corp 3.0   Mastercard Inc Class A 3.0   Hitachi Ltd 3.0   JPMorgan Chase & Co 2.8   Boston Scientific Corp 2.8   Charles Schwab Corp/The 2.4     33.5  
Fidelity Advisor Value Leaders Fund - Class C  
Shareholder Report [Line Items]  
Fund Name Fidelity Advisor® Value Leaders Fund
Class Name Fidelity Advisor® Value Leaders Fund Class C
Trading Symbol FVLCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity Advisor® Value Leaders 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 
1.90%
  
Expenses Paid, Amount $ 92
Expense Ratio, Percent 1.90%
Net Assets $ 27,533,427
Holdings Count | shares 35
Investment Company Portfolio Turnover 56.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$27,533,427
  
Number of Holdings
35
  
Portfolio Turnover
56%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 23.4   Health Care 22.3   Energy 11.2   Industrials 10.7   Consumer Staples 10.4   Information Technology 5.8   Utilities 4.5   Consumer Discretionary 4.1   Communication Services 4.1   Materials 2.4     Common Stocks 96.6 Preferred Stocks 2.3 Short-Term Investments and Net Other Assets (Liabilities) 1.1 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 96.6                       Preferred Stocks - 2.3                     Short-Term Investments and Net Other Assets (Liabilities) - 1.1   United States 88.2 United Kingdom 5.6 Canada 3.9 Korea (South) 2.3 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 88.2                       United Kingdom - 5.6                       Canada - 3.9                               Korea (South) - 2.3                           
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Cigna Group/The 7.9   Centene Corp 5.6   Bank of America Corp 5.3   UnitedHealth Group Inc 5.0   Shell PLC ADR 5.0   Exxon Mobil Corp 4.8   Keurig Dr Pepper Inc 4.2   The Travelers Companies, Inc. 4.2   H&R Block Inc 4.1   Chubb Ltd 3.5     49.6  
Fidelity Advisor Diversified International Fund - Class A  
Shareholder Report [Line Items]  
Fund Name Fidelity Advisor® Diversified International Fund
Class Name Fidelity Advisor® Diversified International Fund Class A
Trading Symbol FDVAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity Advisor® 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 1-877-208-0098 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 
$ 57 
1.12%
  
Expenses Paid, Amount $ 57
Expense Ratio, Percent 1.12%
Net Assets $ 1,440,576,387
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
$1,440,576,387
  
Number of Holdings
139
  
Portfolio Turnover
37%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 27.3   Industrials 27.0   Information Technology 10.9   Health Care 8.9   Materials 8.2   Consumer Discretionary 8.0   Energy 3.0   Communication Services 2.5   Consumer Staples 0.8     Common Stocks 96.0 Preferred Stocks 0.6 Short-Term Investments and Net Other Assets (Liabilities) 3.4 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 96.0                       Preferred Stocks - 0.6                     Short-Term Investments and Net Other Assets (Liabilities) - 3.4   Japan 17.6 United Kingdom 15.8 United States 14.5 Germany 11.8 France 9.3 Canada 4.9 Netherlands 4.3 Sweden 3.1 Italy 3.0 Others 15.7 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Japan - 17.6                               United Kingdom - 15.8                      United States - 14.5                       Germany - 11.8                             France - 9.3                               Canada - 4.9                               Netherlands - 4.3                          Sweden - 3.1                               Italy - 3.0                                Others - 15.7                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     SAP SE 2.8   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 1.5     19.4  
Fidelity Advisor Focused Emerging Markets Fund - Class I  
Shareholder Report [Line Items]  
Fund Name Fidelity Advisor® Focused Emerging Markets Fund
Class Name Fidelity Advisor® Focused Emerging Markets Fund Class I
Trading Symbol FIMKX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity Advisor® Focused 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 
$ 46 
0.93%
  
Expenses Paid, Amount $ 46
Expense Ratio, Percent 0.93%
Net Assets $ 7,291,683,869
Holdings Count | shares 56
Investment Company Portfolio Turnover 61.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$7,291,683,869
  
Number of Holdings
56
  
Portfolio Turnover
61%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 24.7   Information Technology 16.1   Consumer Discretionary 13.5   Communication Services 11.3   Industrials 10.4   Materials 9.9   Consumer Staples 5.4   Health Care 4.7   Energy 3.3     Common Stocks 99.3 Short-Term Investments and Net Other Assets (Liabilities) 0.7 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 99.3                       Short-Term Investments and Net Other Assets (Liabilities) - 0.7   China 32.8 Taiwan 10.9 Korea (South) 9.3 India 8.6 Brazil 8.5 Mexico 7.8 South Africa 4.0 Greece 3.4 Hungary 2.9 Others 11.8 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     China - 32.8                               Taiwan - 10.9                              Korea (South) - 9.3                        India - 8.6                                Brazil - 8.5                               Mexico - 7.8                               South Africa - 4.0                         Greece - 3.4                               Hungary - 2.9                              Others - 11.8                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Tencent Holdings Ltd 9.3   Samsung Electronics Co Ltd 6.4   Taiwan Semiconductor Manufacturing Co Ltd 5.8   Alibaba Group Holding Ltd ADR 4.1   Wal-Mart de Mexico SAB de CV Series V 3.9   Shenzhen Inovance Technology Co Ltd A Shares (China) 2.7   China Life Insurance Co Ltd H Shares 2.6   Itau Unibanco Holding SA 2.5   HDFC Bank Ltd 2.5   Credicorp Ltd 2.2     42.0  
Fidelity Advisor Focused Emerging Markets Fund - Class Z  
Shareholder Report [Line Items]  
Fund Name Fidelity Advisor® Focused Emerging Markets Fund
Class Name Fidelity Advisor® Focused Emerging Markets Fund Class Z
Trading Symbol FZAEX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity Advisor® Focused 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 
$ 40 
0.81%
  
Expenses Paid, Amount $ 40
Expense Ratio, Percent 0.81%
Net Assets $ 7,291,683,869
Holdings Count | shares 56
Investment Company Portfolio Turnover 61.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$7,291,683,869
  
Number of Holdings
56
  
Portfolio Turnover
61%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 24.7   Information Technology 16.1   Consumer Discretionary 13.5   Communication Services 11.3   Industrials 10.4   Materials 9.9   Consumer Staples 5.4   Health Care 4.7   Energy 3.3     Common Stocks 99.3 Short-Term Investments and Net Other Assets (Liabilities) 0.7 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 99.3                       Short-Term Investments and Net Other Assets (Liabilities) - 0.7   China 32.8 Taiwan 10.9 Korea (South) 9.3 India 8.6 Brazil 8.5 Mexico 7.8 South Africa 4.0 Greece 3.4 Hungary 2.9 Others 11.8 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     China - 32.8                               Taiwan - 10.9                              Korea (South) - 9.3                        India - 8.6                                Brazil - 8.5                               Mexico - 7.8                               South Africa - 4.0                         Greece - 3.4                               Hungary - 2.9                              Others - 11.8                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Tencent Holdings Ltd 9.3   Samsung Electronics Co Ltd 6.4   Taiwan Semiconductor Manufacturing Co Ltd 5.8   Alibaba Group Holding Ltd ADR 4.1   Wal-Mart de Mexico SAB de CV Series V 3.9   Shenzhen Inovance Technology Co Ltd A Shares (China) 2.7   China Life Insurance Co Ltd H Shares 2.6   Itau Unibanco Holding SA 2.5   HDFC Bank Ltd 2.5   Credicorp Ltd 2.2     42.0  
Fidelity Advisor Value Leaders Fund - Class M  
Shareholder Report [Line Items]  
Fund Name Fidelity Advisor® Value Leaders Fund
Class Name Fidelity Advisor® Value Leaders Fund Class M
Trading Symbol FVLTX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity Advisor® Value Leaders 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 $ 27,533,427
Holdings Count | shares 35
Investment Company Portfolio Turnover 56.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$27,533,427
  
Number of Holdings
35
  
Portfolio Turnover
56%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 23.4   Health Care 22.3   Energy 11.2   Industrials 10.7   Consumer Staples 10.4   Information Technology 5.8   Utilities 4.5   Consumer Discretionary 4.1   Communication Services 4.1   Materials 2.4     Common Stocks 96.6 Preferred Stocks 2.3 Short-Term Investments and Net Other Assets (Liabilities) 1.1 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 96.6                       Preferred Stocks - 2.3                     Short-Term Investments and Net Other Assets (Liabilities) - 1.1   United States 88.2 United Kingdom 5.6 Canada 3.9 Korea (South) 2.3 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 88.2                       United Kingdom - 5.6                       Canada - 3.9                               Korea (South) - 2.3                           
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Cigna Group/The 7.9   Centene Corp 5.6   Bank of America Corp 5.3   UnitedHealth Group Inc 5.0   Shell PLC ADR 5.0   Exxon Mobil Corp 4.8   Keurig Dr Pepper Inc 4.2   The Travelers Companies, Inc. 4.2   H&R Block Inc 4.1   Chubb Ltd 3.5     49.6  
Fidelity Advisor Focused Emerging Markets Fund - Class M  
Shareholder Report [Line Items]  
Fund Name Fidelity Advisor® Focused Emerging Markets Fund
Class Name Fidelity Advisor® Focused Emerging Markets Fund Class M
Trading Symbol FTMKX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity Advisor® Focused 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 
$ 71 
1.43%
  
Expenses Paid, Amount $ 71
Expense Ratio, Percent 1.43%
Net Assets $ 7,291,683,869
Holdings Count | shares 56
Investment Company Portfolio Turnover 61.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$7,291,683,869
  
Number of Holdings
56
  
Portfolio Turnover
61%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 24.7   Information Technology 16.1   Consumer Discretionary 13.5   Communication Services 11.3   Industrials 10.4   Materials 9.9   Consumer Staples 5.4   Health Care 4.7   Energy 3.3     Common Stocks 99.3 Short-Term Investments and Net Other Assets (Liabilities) 0.7 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 99.3                       Short-Term Investments and Net Other Assets (Liabilities) - 0.7   China 32.8 Taiwan 10.9 Korea (South) 9.3 India 8.6 Brazil 8.5 Mexico 7.8 South Africa 4.0 Greece 3.4 Hungary 2.9 Others 11.8 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     China - 32.8                               Taiwan - 10.9                              Korea (South) - 9.3                        India - 8.6                                Brazil - 8.5                               Mexico - 7.8                               South Africa - 4.0                         Greece - 3.4                               Hungary - 2.9                              Others - 11.8                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Tencent Holdings Ltd 9.3   Samsung Electronics Co Ltd 6.4   Taiwan Semiconductor Manufacturing Co Ltd 5.8   Alibaba Group Holding Ltd ADR 4.1   Wal-Mart de Mexico SAB de CV Series V 3.9   Shenzhen Inovance Technology Co Ltd A Shares (China) 2.7   China Life Insurance Co Ltd H Shares 2.6   Itau Unibanco Holding SA 2.5   HDFC Bank Ltd 2.5   Credicorp Ltd 2.2     42.0  
Fidelity Advisor Overseas Fund - Class C  
Shareholder Report [Line Items]  
Fund Name Fidelity Advisor® Overseas Fund
Class Name Fidelity Advisor® Overseas Fund Class C
Trading Symbol FAOCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity Advisor® 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 1-877-208-0098 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 
$ 93 
1.80%
  
Expenses Paid, Amount $ 93
Expense Ratio, Percent 1.80%
Net Assets $ 412,238,315
Holdings Count | shares 85
Investment Company Portfolio Turnover 49.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$412,238,315
  
Number of Holdings
85
  
Portfolio Turnover
49%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 29.0   Industrials 26.7   Information Technology 12.8   Health Care 8.3   Materials 6.8   Communication Services 6.5   Consumer Discretionary 5.7   Consumer Staples 1.3     Common Stocks 97.1 Short-Term Investments and Net Other Assets (Liabilities) 2.9 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 97.1                       Short-Term Investments and Net Other Assets (Liabilities) - 2.9   United States 18.0 United Kingdom 16.8 Japan 13.6 Germany 12.2 France 11.3 Netherlands 6.4 Italy 4.2 Spain 3.2 Sweden 2.9 Others 11.4 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 18.0                       United Kingdom - 16.8                      Japan - 13.6                               Germany - 12.2                             France - 11.3                              Netherlands - 6.4                          Italy - 4.2                                Spain - 3.2                                Sweden - 2.9                               Others - 11.4                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     SAP SE 3.4   RELX PLC 2.4   Hitachi Ltd 2.3   Allianz SE 2.2   Tokio Marine Holdings Inc 2.2   Safran SA 2.2   London Stock Exchange Group PLC 2.1   Wolters Kluwer NV 2.1   Deutsche Boerse AG 2.0   3i Group PLC 2.0     22.9  
Fidelity Advisor Emerging Asia Fund - Class I  
Shareholder Report [Line Items]  
Fund Name Fidelity Advisor® Emerging Asia Fund
Class Name Fidelity Advisor® Emerging Asia Fund Class I
Trading Symbol FERIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity Advisor® 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 1-877-208-0098 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 
0.96%
  
Expenses Paid, Amount $ 48
Expense Ratio, Percent 0.96%
Net Assets $ 436,140,299
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
$436,140,299
  
Number of Holdings
140
  
Portfolio Turnover
77%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Information Technology 24.9   Consumer Discretionary 22.0   Communication Services 14.6   Financials 13.2   Industrials 13.0   Health Care 10.4   Energy 0.9   Consumer Staples 0.5   Materials 0.1     Common Stocks 98.6 Preferred Stocks 1.0 Short-Term Investments and Net Other Assets (Liabilities) 0.4 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 98.6                       Preferred Stocks - 1.0                     Short-Term Investments and Net Other Assets (Liabilities) - 0.4   China 36.9 India 28.9 Taiwan 15.1 Singapore 6.5 Korea (South) 6.2 Hong Kong 2.4 Indonesia 0.9 United States 0.8 Japan 0.6 Others 1.7 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     China - 36.9                               India - 28.9                               Taiwan - 15.1                              Singapore - 6.5                            Korea (South) - 6.2                        Hong Kong - 2.4                            Indonesia - 0.9                            United States - 0.8                        Japan - 0.6                                Others - 1.7                                  
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Taiwan Semiconductor Manufacturing Co Ltd 10.0   Sea Ltd Class A ADR 6.1   Tencent Holdings Ltd 5.8   Eternal Ltd 5.0   PDD Holdings Inc Class A ADR 4.1   MakeMyTrip Ltd 3.9   HDFC Bank Ltd 3.4   Taiwan Semiconductor Manufacturing Co Ltd ADR 3.0   Advanced Micro-Fabrication Equipment Inc China A Shares (China) 2.7   WuXi XDC Cayman Inc 1.8     45.8  
Fidelity Advisor International Capital Appreciation Fund - Class Z  
Shareholder Report [Line Items]  
Fund Name Fidelity Advisor® International Capital Appreciation Fund
Class Name Fidelity Advisor® International Capital Appreciation Fund Class Z
Trading Symbol FIDZX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity Advisor® 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 1-877-208-0098 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 
0.77%
  
Expenses Paid, Amount $ 39
Expense Ratio, Percent 0.77%
Net Assets $ 9,841,053,187
Holdings Count | shares 63
Investment Company Portfolio Turnover 86.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$9,841,053,187
  
Number of Holdings
63
  
Portfolio Turnover
86%
  
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 Asia Fund - Class C  
Shareholder Report [Line Items]  
Fund Name Fidelity Advisor® Emerging Asia Fund
Class Name Fidelity Advisor® Emerging Asia Fund Class C
Trading Symbol FERCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity Advisor® 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 1-877-208-0098 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 
1.98%
  
Expenses Paid, Amount $ 98
Expense Ratio, Percent 1.98%
Net Assets $ 436,140,299
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
$436,140,299
  
Number of Holdings
140
  
Portfolio Turnover
77%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Information Technology 24.9   Consumer Discretionary 22.0   Communication Services 14.6   Financials 13.2   Industrials 13.0   Health Care 10.4   Energy 0.9   Consumer Staples 0.5   Materials 0.1     Common Stocks 98.6 Preferred Stocks 1.0 Short-Term Investments and Net Other Assets (Liabilities) 0.4 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 98.6                       Preferred Stocks - 1.0                     Short-Term Investments and Net Other Assets (Liabilities) - 0.4   China 36.9 India 28.9 Taiwan 15.1 Singapore 6.5 Korea (South) 6.2 Hong Kong 2.4 Indonesia 0.9 United States 0.8 Japan 0.6 Others 1.7 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     China - 36.9                               India - 28.9                               Taiwan - 15.1                              Singapore - 6.5                            Korea (South) - 6.2                        Hong Kong - 2.4                            Indonesia - 0.9                            United States - 0.8                        Japan - 0.6                                Others - 1.7                                  
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Taiwan Semiconductor Manufacturing Co Ltd 10.0   Sea Ltd Class A ADR 6.1   Tencent Holdings Ltd 5.8   Eternal Ltd 5.0   PDD Holdings Inc Class A ADR 4.1   MakeMyTrip Ltd 3.9   HDFC Bank Ltd 3.4   Taiwan Semiconductor Manufacturing Co Ltd ADR 3.0   Advanced Micro-Fabrication Equipment Inc China A Shares (China) 2.7   WuXi XDC Cayman Inc 1.8     45.8  
Fidelity Advisor Overseas Fund - Class Z  
Shareholder Report [Line Items]  
Fund Name Fidelity Advisor® Overseas Fund
Class Name Fidelity Advisor® Overseas Fund Class Z
Trading Symbol FAOSX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity Advisor® 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 1-877-208-0098 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 
$ 33 
0.64%
  
Expenses Paid, Amount $ 33
Expense Ratio, Percent 0.64%
Net Assets $ 412,238,315
Holdings Count | shares 85
Investment Company Portfolio Turnover 49.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$412,238,315
  
Number of Holdings
85
  
Portfolio Turnover
49%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 29.0   Industrials 26.7   Information Technology 12.8   Health Care 8.3   Materials 6.8   Communication Services 6.5   Consumer Discretionary 5.7   Consumer Staples 1.3     Common Stocks 97.1 Short-Term Investments and Net Other Assets (Liabilities) 2.9 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 97.1                       Short-Term Investments and Net Other Assets (Liabilities) - 2.9   United States 18.0 United Kingdom 16.8 Japan 13.6 Germany 12.2 France 11.3 Netherlands 6.4 Italy 4.2 Spain 3.2 Sweden 2.9 Others 11.4 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 18.0                       United Kingdom - 16.8                      Japan - 13.6                               Germany - 12.2                             France - 11.3                              Netherlands - 6.4                          Italy - 4.2                                Spain - 3.2                                Sweden - 2.9                               Others - 11.4                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     SAP SE 3.4   RELX PLC 2.4   Hitachi Ltd 2.3   Allianz SE 2.2   Tokio Marine Holdings Inc 2.2   Safran SA 2.2   London Stock Exchange Group PLC 2.1   Wolters Kluwer NV 2.1   Deutsche Boerse AG 2.0   3i Group PLC 2.0     22.9  
Fidelity Advisor Focused Emerging Markets Fund - Class A  
Shareholder Report [Line Items]  
Fund Name Fidelity Advisor® Focused Emerging Markets Fund
Class Name Fidelity Advisor® Focused Emerging Markets Fund Class A
Trading Symbol FAMKX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity Advisor® Focused 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 
$ 58 
1.18%
  
Expenses Paid, Amount $ 58
Expense Ratio, Percent 1.18%
Net Assets $ 7,291,683,869
Holdings Count | shares 56
Investment Company Portfolio Turnover 61.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$7,291,683,869
  
Number of Holdings
56
  
Portfolio Turnover
61%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 24.7   Information Technology 16.1   Consumer Discretionary 13.5   Communication Services 11.3   Industrials 10.4   Materials 9.9   Consumer Staples 5.4   Health Care 4.7   Energy 3.3     Common Stocks 99.3 Short-Term Investments and Net Other Assets (Liabilities) 0.7 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 99.3                       Short-Term Investments and Net Other Assets (Liabilities) - 0.7   China 32.8 Taiwan 10.9 Korea (South) 9.3 India 8.6 Brazil 8.5 Mexico 7.8 South Africa 4.0 Greece 3.4 Hungary 2.9 Others 11.8 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     China - 32.8                               Taiwan - 10.9                              Korea (South) - 9.3                        India - 8.6                                Brazil - 8.5                               Mexico - 7.8                               South Africa - 4.0                         Greece - 3.4                               Hungary - 2.9                              Others - 11.8                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Tencent Holdings Ltd 9.3   Samsung Electronics Co Ltd 6.4   Taiwan Semiconductor Manufacturing Co Ltd 5.8   Alibaba Group Holding Ltd ADR 4.1   Wal-Mart de Mexico SAB de CV Series V 3.9   Shenzhen Inovance Technology Co Ltd A Shares (China) 2.7   China Life Insurance Co Ltd H Shares 2.6   Itau Unibanco Holding SA 2.5   HDFC Bank Ltd 2.5   Credicorp Ltd 2.2     42.0  
Fidelity Advisor Value Leaders Fund - Class A  
Shareholder Report [Line Items]  
Fund Name Fidelity Advisor® Value Leaders Fund
Class Name Fidelity Advisor® Value Leaders Fund Class A
Trading Symbol FVLAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity Advisor® Value Leaders 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 
$ 56 
1.15%
  
Expenses Paid, Amount $ 56
Expense Ratio, Percent 1.15%
Net Assets $ 27,533,427
Holdings Count | shares 35
Investment Company Portfolio Turnover 56.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$27,533,427
  
Number of Holdings
35
  
Portfolio Turnover
56%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 23.4   Health Care 22.3   Energy 11.2   Industrials 10.7   Consumer Staples 10.4   Information Technology 5.8   Utilities 4.5   Consumer Discretionary 4.1   Communication Services 4.1   Materials 2.4     Common Stocks 96.6 Preferred Stocks 2.3 Short-Term Investments and Net Other Assets (Liabilities) 1.1 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 96.6                       Preferred Stocks - 2.3                     Short-Term Investments and Net Other Assets (Liabilities) - 1.1   United States 88.2 United Kingdom 5.6 Canada 3.9 Korea (South) 2.3 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 88.2                       United Kingdom - 5.6                       Canada - 3.9                               Korea (South) - 2.3                           
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Cigna Group/The 7.9   Centene Corp 5.6   Bank of America Corp 5.3   UnitedHealth Group Inc 5.0   Shell PLC ADR 5.0   Exxon Mobil Corp 4.8   Keurig Dr Pepper Inc 4.2   The Travelers Companies, Inc. 4.2   H&R Block Inc 4.1   Chubb Ltd 3.5     49.6  
Fidelity Advisor Overseas Fund - Class A  
Shareholder Report [Line Items]  
Fund Name Fidelity Advisor® Overseas Fund
Class Name Fidelity Advisor® Overseas Fund Class A
Trading Symbol FAOAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity Advisor® 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 1-877-208-0098 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 
$ 54 
1.05%
  
Expenses Paid, Amount $ 54
Expense Ratio, Percent 1.05%
Net Assets $ 412,238,315
Holdings Count | shares 85
Investment Company Portfolio Turnover 49.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$412,238,315
  
Number of Holdings
85
  
Portfolio Turnover
49%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 29.0   Industrials 26.7   Information Technology 12.8   Health Care 8.3   Materials 6.8   Communication Services 6.5   Consumer Discretionary 5.7   Consumer Staples 1.3     Common Stocks 97.1 Short-Term Investments and Net Other Assets (Liabilities) 2.9 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 97.1                       Short-Term Investments and Net Other Assets (Liabilities) - 2.9   United States 18.0 United Kingdom 16.8 Japan 13.6 Germany 12.2 France 11.3 Netherlands 6.4 Italy 4.2 Spain 3.2 Sweden 2.9 Others 11.4 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 18.0                       United Kingdom - 16.8                      Japan - 13.6                               Germany - 12.2                             France - 11.3                              Netherlands - 6.4                          Italy - 4.2                                Spain - 3.2                                Sweden - 2.9                               Others - 11.4                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     SAP SE 3.4   RELX PLC 2.4   Hitachi Ltd 2.3   Allianz SE 2.2   Tokio Marine Holdings Inc 2.2   Safran SA 2.2   London Stock Exchange Group PLC 2.1   Wolters Kluwer NV 2.1   Deutsche Boerse AG 2.0   3i Group PLC 2.0     22.9  
Fidelity Advisor Global Capital Appreciation Fund - Class A  
Shareholder Report [Line Items]  
Fund Name Fidelity Advisor® Global Capital Appreciation Fund
Class Name Fidelity Advisor® Global Capital Appreciation Fund Class A
Trading Symbol FGEAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity Advisor® Global 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 1-877-208-0098 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 
1.30%
  
Expenses Paid, Amount $ 63
Expense Ratio, Percent 1.30%
Net Assets $ 134,591,118
Holdings Count | shares 58
Investment Company Portfolio Turnover 71.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$134,591,118
  
Number of Holdings
58
  
Portfolio Turnover
71%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 28.2   Industrials 19.5   Information Technology 17.2   Consumer Discretionary 9.4   Communication Services 6.9   Health Care 4.7   Materials 2.8   Energy 2.7   Consumer Staples 1.2     Common Stocks 92.1 Preferred Stocks 0.5 Short-Term Investments and Net Other Assets (Liabilities) 7.4 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 92.1                       Preferred Stocks - 0.5                     Short-Term Investments and Net Other Assets (Liabilities) - 7.4   United States 76.6 China 4.4 Japan 3.0 India 2.7 Taiwan 2.1 Germany 1.8 Denmark 1.5 Canada 1.3 United Kingdom 1.3 Others 5.3 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 76.6                       China - 4.4                                Japan - 3.0                                India - 2.7                                Taiwan - 2.1                               Germany - 1.8                              Denmark - 1.5                              Canada - 1.3                               United Kingdom - 1.3                       Others - 5.3                                  
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Microsoft Corp 5.1   Amazon.com Inc 4.4   Meta Platforms Inc Class A 3.8   Visa Inc Class A 3.2   NVIDIA Corp 3.0   Mastercard Inc Class A 3.0   Hitachi Ltd 3.0   JPMorgan Chase & Co 2.8   Boston Scientific Corp 2.8   Charles Schwab Corp/The 2.4     33.5  
Fidelity Advisor Emerging Asia Fund - Class A  
Shareholder Report [Line Items]  
Fund Name Fidelity Advisor® Emerging Asia Fund
Class Name Fidelity Advisor® Emerging Asia Fund Class A
Trading Symbol FEAAX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity Advisor® 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 1-877-208-0098 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 
1.24%
  
Expenses Paid, Amount $ 62
Expense Ratio, Percent 1.24%
Net Assets $ 436,140,299
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
$436,140,299
  
Number of Holdings
140
  
Portfolio Turnover
77%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Information Technology 24.9   Consumer Discretionary 22.0   Communication Services 14.6   Financials 13.2   Industrials 13.0   Health Care 10.4   Energy 0.9   Consumer Staples 0.5   Materials 0.1     Common Stocks 98.6 Preferred Stocks 1.0 Short-Term Investments and Net Other Assets (Liabilities) 0.4 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 98.6                       Preferred Stocks - 1.0                     Short-Term Investments and Net Other Assets (Liabilities) - 0.4   China 36.9 India 28.9 Taiwan 15.1 Singapore 6.5 Korea (South) 6.2 Hong Kong 2.4 Indonesia 0.9 United States 0.8 Japan 0.6 Others 1.7 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     China - 36.9                               India - 28.9                               Taiwan - 15.1                              Singapore - 6.5                            Korea (South) - 6.2                        Hong Kong - 2.4                            Indonesia - 0.9                            United States - 0.8                        Japan - 0.6                                Others - 1.7                                  
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Taiwan Semiconductor Manufacturing Co Ltd 10.0   Sea Ltd Class A ADR 6.1   Tencent Holdings Ltd 5.8   Eternal Ltd 5.0   PDD Holdings Inc Class A ADR 4.1   MakeMyTrip Ltd 3.9   HDFC Bank Ltd 3.4   Taiwan Semiconductor Manufacturing Co Ltd ADR 3.0   Advanced Micro-Fabrication Equipment Inc China A Shares (China) 2.7   WuXi XDC Cayman Inc 1.8     45.8  
Fidelity Advisor Value Leaders Fund - Class I  
Shareholder Report [Line Items]  
Fund Name Fidelity Advisor® Value Leaders Fund
Class Name Fidelity Advisor® Value Leaders Fund Class I
Trading Symbol FVLIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity Advisor® Value Leaders 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 
0.89%
  
Expenses Paid, Amount $ 43
Expense Ratio, Percent 0.89%
Net Assets $ 27,533,427
Holdings Count | shares 35
Investment Company Portfolio Turnover 56.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$27,533,427
  
Number of Holdings
35
  
Portfolio Turnover
56%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 23.4   Health Care 22.3   Energy 11.2   Industrials 10.7   Consumer Staples 10.4   Information Technology 5.8   Utilities 4.5   Consumer Discretionary 4.1   Communication Services 4.1   Materials 2.4     Common Stocks 96.6 Preferred Stocks 2.3 Short-Term Investments and Net Other Assets (Liabilities) 1.1 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 96.6                       Preferred Stocks - 2.3                     Short-Term Investments and Net Other Assets (Liabilities) - 1.1   United States 88.2 United Kingdom 5.6 Canada 3.9 Korea (South) 2.3 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     United States - 88.2                       United Kingdom - 5.6                       Canada - 3.9                               Korea (South) - 2.3                           
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     Cigna Group/The 7.9   Centene Corp 5.6   Bank of America Corp 5.3   UnitedHealth Group Inc 5.0   Shell PLC ADR 5.0   Exxon Mobil Corp 4.8   Keurig Dr Pepper Inc 4.2   The Travelers Companies, Inc. 4.2   H&R Block Inc 4.1   Chubb Ltd 3.5     49.6  
Fidelity Advisor International Capital Appreciation Fund - Class M  
Shareholder Report [Line Items]  
Fund Name Fidelity Advisor® International Capital Appreciation Fund
Class Name Fidelity Advisor® International Capital Appreciation Fund Class M
Trading Symbol FIATX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity Advisor® 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 1-877-208-0098 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 
1.39%
  
Expenses Paid, Amount $ 71
Expense Ratio, Percent 1.39%
Net Assets $ 9,841,053,187
Holdings Count | shares 63
Investment Company Portfolio Turnover 86.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of April 30, 2025)
 
KEY FACTS 
  
  
Fund Size
$9,841,053,187
  
Number of Holdings
63
  
Portfolio Turnover
86%
  
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 Diversified International Fund - Class I  
Shareholder Report [Line Items]  
Fund Name Fidelity Advisor® Diversified International Fund
Class Name Fidelity Advisor® Diversified International Fund Class I
Trading Symbol FDVIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity Advisor® 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 1-877-208-0098 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 
0.87%
  
Expenses Paid, Amount $ 44
Expense Ratio, Percent 0.87%
Net Assets $ 1,440,576,387
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
$1,440,576,387
  
Number of Holdings
139
  
Portfolio Turnover
37%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 27.3   Industrials 27.0   Information Technology 10.9   Health Care 8.9   Materials 8.2   Consumer Discretionary 8.0   Energy 3.0   Communication Services 2.5   Consumer Staples 0.8     Common Stocks 96.0 Preferred Stocks 0.6 Short-Term Investments and Net Other Assets (Liabilities) 3.4 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 96.0                       Preferred Stocks - 0.6                     Short-Term Investments and Net Other Assets (Liabilities) - 3.4   Japan 17.6 United Kingdom 15.8 United States 14.5 Germany 11.8 France 9.3 Canada 4.9 Netherlands 4.3 Sweden 3.1 Italy 3.0 Others 15.7 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Japan - 17.6                               United Kingdom - 15.8                      United States - 14.5                       Germany - 11.8                             France - 9.3                               Canada - 4.9                               Netherlands - 4.3                          Sweden - 3.1                               Italy - 3.0                                Others - 15.7                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     SAP SE 2.8   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 1.5     19.4  
Fidelity Advisor Diversified International Fund - Class C  
Shareholder Report [Line Items]  
Fund Name Fidelity Advisor® Diversified International Fund
Class Name Fidelity Advisor® Diversified International Fund Class C
Trading Symbol FADCX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about Fidelity Advisor® 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 1-877-208-0098 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 
$ 95 
1.87%
  
Expenses Paid, Amount $ 95
Expense Ratio, Percent 1.87%
Net Assets $ 1,440,576,387
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
$1,440,576,387
  
Number of Holdings
139
  
Portfolio Turnover
37%
  
Holdings [Text Block]       MARKET SECTORS (% of Fund's net assets)     Financials 27.3   Industrials 27.0   Information Technology 10.9   Health Care 8.9   Materials 8.2   Consumer Discretionary 8.0   Energy 3.0   Communication Services 2.5   Consumer Staples 0.8     Common Stocks 96.0 Preferred Stocks 0.6 Short-Term Investments and Net Other Assets (Liabilities) 3.4 ASSET ALLOCATION (% of Fund's net assets)     Common Stocks - 96.0                       Preferred Stocks - 0.6                     Short-Term Investments and Net Other Assets (Liabilities) - 3.4   Japan 17.6 United Kingdom 15.8 United States 14.5 Germany 11.8 France 9.3 Canada 4.9 Netherlands 4.3 Sweden 3.1 Italy 3.0 Others 15.7 GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)     Japan - 17.6                               United Kingdom - 15.8                      United States - 14.5                       Germany - 11.8                             France - 9.3                               Canada - 4.9                               Netherlands - 4.3                          Sweden - 3.1                               Italy - 3.0                                Others - 15.7                                 
Largest Holdings [Text Block] TOP HOLDINGS (% of Fund's net assets)     SAP SE 2.8   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 1.5     19.4