v3.26.1
Shareholder Report
 6 Months Ended
Jun. 30, 2026
USD ($)
shares
Shareholder Report [Line Items]  
Document Type N-CSRS
Amendment Flag false
Registrant Name Variable Insurance Products Fund VI
Entity Central Index Key 0001999801
Entity Investment Company Type N-1A
Document Period End Date Jun. 30, 2026
VIP Hedged Equity Portfolio - Initial Class  
Shareholder Report [Line Items]  
Fund Name VIP Hedged Equity Portfolio
Class Name VIP Hedged Equity Portfolio Initial Class
No Trading Symbol Flag true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about VIP Hedged Equity Portfolio for the period January 1, 2026 to June 30, 2026.
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 funddocuments@fmr.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email funddocuments@fmr.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
 
Initial Class 
$ 27 
0.52%
  
Expenses Paid, Amount $ 27
Expense Ratio, Percent 0.52%
Net Assets $ 17,560,069
Holdings Count | shares 462
Investment Company Portfolio Turnover 131.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of June 30, 2026)
 
KEY FACTS 
  
  
Fund Size
$17,560,069
  
Number of Holdings
462
  
Portfolio Turnover
131%
  
Holdings [Text Block] DERIVATIVE EXPOSURE (% of Fund's net assets)     Options 0.8           Common Stocks 98.3 Domestic Equity Funds 1.0 Options 0.8 ASSET ALLOCATION (% of Fund's total exposure)     Common Stocks - 98.3                       Domestic Equity Funds - 1.0                Options - 0.8                            Short-Term Investments and Net Other Assets (Liabilities) - (0.1)%  
Largest Holdings [Text Block] TOP HOLDINGS(% of Fund's net assets)     NVIDIA Corp 7.6   Apple Inc 6.7   Alphabet Inc Class A 5.9   Microsoft Corp 4.6   Amazon.com Inc 3.8   Broadcom Inc 2.9   Micron Technology Inc 2.1   Meta Platforms Inc Class A 2.0   Tesla Inc 1.9   Berkshire Hathaway Inc Class B 1.8     39.3  
VIP Hedged Equity Portfolio - Service Class  
Shareholder Report [Line Items]  
Fund Name VIP Hedged Equity Portfolio
Class Name VIP Hedged Equity Portfolio Service Class
No Trading Symbol Flag true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about VIP Hedged Equity Portfolio for the period January 1, 2026 to June 30, 2026.
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 funddocuments@fmr.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email funddocuments@fmr.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
 
Service Class 
$ 32 
0.62%
  
Expenses Paid, Amount $ 32
Expense Ratio, Percent 0.62%
Net Assets $ 17,560,069
Holdings Count | shares 462
Investment Company Portfolio Turnover 131.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of June 30, 2026)
 
KEY FACTS 
  
  
Fund Size
$17,560,069
  
Number of Holdings
462
  
Portfolio Turnover
131%
  
Holdings [Text Block] DERIVATIVE EXPOSURE (% of Fund's net assets)     Options 0.8           Common Stocks 98.3 Domestic Equity Funds 1.0 Options 0.8 ASSET ALLOCATION (% of Fund's total exposure)     Common Stocks - 98.3                       Domestic Equity Funds - 1.0                Options - 0.8                            Short-Term Investments and Net Other Assets (Liabilities) - (0.1)%  
Largest Holdings [Text Block] TOP HOLDINGS(% of Fund's net assets)     NVIDIA Corp 7.6   Apple Inc 6.7   Alphabet Inc Class A 5.9   Microsoft Corp 4.6   Amazon.com Inc 3.8   Broadcom Inc 2.9   Micron Technology Inc 2.1   Meta Platforms Inc Class A 2.0   Tesla Inc 1.9   Berkshire Hathaway Inc Class B 1.8     39.3  
VIP Hedged Equity Portfolio - Service Class 2  
Shareholder Report [Line Items]  
Fund Name VIP Hedged Equity Portfolio
Class Name VIP Hedged Equity Portfolio Service Class 2
No Trading Symbol Flag true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about VIP Hedged Equity Portfolio for the period January 1, 2026 to June 30, 2026.
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 funddocuments@fmr.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email funddocuments@fmr.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
 
Service Class 2 
$ 40 
0.77%
  
Expenses Paid, Amount $ 40
Expense Ratio, Percent 0.77%
Net Assets $ 17,560,069
Holdings Count | shares 462
Investment Company Portfolio Turnover 131.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of June 30, 2026)
 
KEY FACTS 
  
  
Fund Size
$17,560,069
  
Number of Holdings
462
  
Portfolio Turnover
131%
  
Holdings [Text Block] DERIVATIVE EXPOSURE (% of Fund's net assets)     Options 0.8           Common Stocks 98.3 Domestic Equity Funds 1.0 Options 0.8 ASSET ALLOCATION (% of Fund's total exposure)     Common Stocks - 98.3                       Domestic Equity Funds - 1.0                Options - 0.8                            Short-Term Investments and Net Other Assets (Liabilities) - (0.1)%  
Largest Holdings [Text Block] TOP HOLDINGS(% of Fund's net assets)     NVIDIA Corp 7.6   Apple Inc 6.7   Alphabet Inc Class A 5.9   Microsoft Corp 4.6   Amazon.com Inc 3.8   Broadcom Inc 2.9   Micron Technology Inc 2.1   Meta Platforms Inc Class A 2.0   Tesla Inc 1.9   Berkshire Hathaway Inc Class B 1.8     39.3  
VIP Hedged Equity Portfolio - Investor Class  
Shareholder Report [Line Items]  
Fund Name VIP Hedged Equity Portfolio
Class Name VIP Hedged Equity Portfolio Investor Class
No Trading Symbol Flag true
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains information about VIP Hedged Equity Portfolio for the period January 1, 2026 to June 30, 2026.
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 funddocuments@fmr.com.
Additional Information Phone Number 1-877-208-0098
Additional Information Email funddocuments@fmr.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
 
Investor Class 
$ 28 
0.55%
  
Expenses Paid, Amount $ 28
Expense Ratio, Percent 0.55%
Net Assets $ 17,560,069
Holdings Count | shares 462
Investment Company Portfolio Turnover 131.00%
Additional Fund Statistics [Text Block] Key Fund Statistics
(as of June 30, 2026)
 
KEY FACTS 
  
  
Fund Size
$17,560,069
  
Number of Holdings
462
  
Portfolio Turnover
131%
  
Holdings [Text Block] DERIVATIVE EXPOSURE (% of Fund's net assets)     Options 0.8           Common Stocks 98.3 Domestic Equity Funds 1.0 Options 0.8 ASSET ALLOCATION (% of Fund's total exposure)     Common Stocks - 98.3                       Domestic Equity Funds - 1.0                Options - 0.8                            Short-Term Investments and Net Other Assets (Liabilities) - (0.1)%  
Largest Holdings [Text Block] TOP HOLDINGS(% of Fund's net assets)     NVIDIA Corp 7.6   Apple Inc 6.7   Alphabet Inc Class A 5.9   Microsoft Corp 4.6   Amazon.com Inc 3.8   Broadcom Inc 2.9   Micron Technology Inc 2.1   Meta Platforms Inc Class A 2.0   Tesla Inc 1.9   Berkshire Hathaway Inc Class B 1.8     39.3