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Risk/Return: rr_RiskReturnAbstract  
Supplement to Prospectus [Text Block] rr_SupplementToProspectusTextBlock
Supplement to the
Fidelity Advisor Asset Manager® Funds
Fidelity Asset Manager® 20%, Fidelity Asset Manager® 30%, Fidelity Asset Manager® 40%, Fidelity Asset Manager® 50%, Fidelity Asset Manager® 60%, Fidelity Asset Manager® 70%, and Fidelity Asset Manager® 85%
Class A, Class M, Class C, Class I, and Class Z
November 29, 2023
Prospectus
Effective March 1, 2024, each fund’s management contract was amended to incorporate administrative services previously covered under separate services agreements. Each amended contract incorporates a management fee rate that may vary by class. The Adviser or an affiliate pays certain expenses of managing and operating each fund out of each class’s management fee.
The following information replaces similar information for Fidelity Asset Manager® 20% found in the “Fund Summary” section under the “Fee Table” heading.
Annual Operating Expenses
(expenses that you pay each year as a % of the value of your investment)
    Class A   Class M   Class C   Class I   Class Z      
Management fee
  0.52% A,B   0.52% A,B    0.52% A,B    0.52% A,B    0.45% A,B   
Distribution and/or Service (12b‑1) fees
  0.25%   0.50%   1.00%   None   None  
Other expenses
  0.01% B    0.01% B    0.01% B    0.01% B    0.01% B   
 
 
 
Total annual operating expenses
  0.78%   1.03%   1.53%   0.53%   0.46%  
A The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.17% for Class A, 0.16% for Class M, 0.16% for Class C, 0.14% for Class I, and 0.07% for Class Z was previously charged under the services agreements.
B Adjusted to reflect current fees.
    Class A   Class M   Class C   Class I   Class Z
   
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
1 year
  $ 650   $ 650   $ 451   $ 451   $ 256   $ 156   $ 54   $ 54   $ 47   $ 47
3 years
  $ 810   $ 810   $ 666   $ 666   $ 483   $ 483   $ 170   $ 170   $ 148   $ 148
5 years
  $ 983   $ 983   $ 899   $ 899   $ 834   $ 834   $ 296   $ 296   $ 258   $ 258
10 years
  $ 1,486   $ 1,486   $ 1,565   $ 1,565   $ 1,621   $ 1,621   $ 665   $ 665   $ 579   $ 579
The following information replaces similar information for Fidelity Asset Manager® 30% found in the “Fund Summary” section under the “Fee Table” heading.
Annual Operating Expenses
(expenses that you pay each year as a % of the value of your investment)
    Class A   Class M   Class C   Class I   Class Z      
Management fee
  0.53% A,B   0.53% A,B   0.53% A,B   0.53% A,B   0.46% A,B  
Distribution and/or Service (12b‑1) fees
  0.25%   0.50%   1.00%   None   None  
Other expenses
  0.02% B    0.02% B    0.02% B    0.02% B    0.02% B   
 
 
 
Total annual operating expenses
  0.80%   1.05%   1.55%   0.55%   0.48%  
A The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.16% for Class A, 0.16% for Class M, 0.17% for Class C, 0.17% for Class I, and 0.08% for Class Z was previously charged under the services agreements.
B Adjusted to reflect current fees.
    Class A   Class M   Class C   Class I   Class Z
   
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
1 year
  $ 652   $ 652   $ 453   $ 453   $ 258   $ 158   $ 56   $ 56   $ 49   $ 49
3 years
  $ 816   $ 816   $ 672   $ 672   $ 490   $ 490   $ 176   $ 176   $ 154   $ 154
5 years
  $ 994   $ 994   $ 909   $ 909   $ 845   $ 845   $ 307   $ 307   $ 269   $ 269
10 years
  $ 1,508   $ 1,508   $ 1,588   $ 1,588   $ 1,643   $ 1,643   $ 689   $ 689   $ 604   $ 604
The following information replaces similar information for Fidelity Asset Manager® 40% found in the “Fund Summary” section under the “Fee Table” heading.
Annual Operating Expenses
(expenses that you pay each year as a % of the value of your investment)
    Class A   Class M   Class C   Class I   Class Z      
Management fee
  0.53% A,B   0.53% A,B    0.53% A,B   0.53% A,B   0.46% A,B  
Distribution and/or Service (12b‑1) fees
  0.25%   0.50%   1.00%   None   None  
Other expenses
  0.01% B    0.01% B    0.01% B    0.01% B    0.02% B   
 
 
 
Total annual operating expenses
  0.79%   1.04%   1.54%   0.54%   0.48%  
A The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.17% for Class A, 0.16% for Class M, 0.18% for Class C, 0.16% for Class I, and 0.08% for Class Z was previously charged under the services agreements.
B Adjusted to reflect current fees.
    Class A   Class M   Class C   Class I   Class Z
   
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
1 year
  $ 651   $ 651   $ 452   $ 452   $ 257   $ 157   $ 55   $ 55   $ 49   $ 49
3 years
  $ 813   $ 813   $ 669   $ 669   $ 486   $ 486   $ 173   $ 173   $ 154   $ 154
5 years
  $ 989   $ 989   $ 904   $ 904   $ 839   $ 839   $ 302   $ 302   $ 269   $ 269
10 years
  $ 1,497   $ 1,497   $ 1,577   $ 1,577   $ 1,632   $ 1,632   $ 677   $ 677   $ 604   $ 604
The following information replaces similar information for Fidelity Asset Manager® 50% found in the “Fund Summary” section under the “Fee Table” heading.
Annual Operating Expenses
(expenses that you pay each year as a % of the value of your investment)
    Class A   Class M   Class C   Class I   Class Z      
Management fee
  0.59% A,B   0.59% A,B    0.59% A,B    0.59% A,B    0.47% A,B   
Distribution and/or Service (12b‑1) fees
  0.25%   0.50%   1.00%   None   None  
Other expenses
  0.01% B    0.01% B    0.01% B    0.01% B    0.01% B   
 
 
 
Total annual operating expenses
  0.85%   1.10%   1.60%   0.60%   0.48%  
A The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.18% for Class A, 0.17% for Class M, 0.18% for Class C, 0.16% for Class I, and 0.06% for Class Z was previously charged under the services agreements.
B Adjusted to reflect current fees.
    Class A   Class M   Class C   Class I   Class Z
   
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
1 year
  $ 657   $ 657   $ 458   $ 458   $ 263   $ 163   $ 61   $ 61   $ 49   $ 49
3 years
  $ 831   $ 831   $ 687   $ 687   $ 505   $ 505   $ 192   $ 192   $ 154   $ 154
5 years
  $ 1,019   $ 1,019   $ 935   $ 935   $ 871   $ 871   $ 335   $ 335   $ 269   $ 269
10 years
  $ 1,564   $ 1,564   $ 1,643   $ 1,643   $ 1,699   $ 1,699   $ 750   $ 750   $ 604   $ 604
The following information replaces similar information for Fidelity Asset Manager® 60% found in the “Fund Summary” section under the “Fee Table” heading.
Annual Operating Expenses
(expenses that you pay each year as a % of the value of your investment)
    Class A   Class M   Class C   Class I   Class Z      
Management fee
  0.69% A,B   0.69% A,B   0.69%A,B   0.69% A,B   0.57%A,B  
Distribution and/or Service (12b‑1) fees
  0.25%   0.50%   1.00%   None   None  
Other expenses
  0.02% B    0.02% B    0.02% B    0.02% B    0.02% B   
 
 
 
Total annual operating expenses
  0.96%   1.21%   1.71%   0.71%   0.59%  
A The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.21% for Class A, 0.20% for Class M, 0.22% for Class C, 0.21% for Class I, and 0.07% for Class Z was previously charged under the services agreements.
B Adjusted to reflect current fees.
    Class A   Class M   Class C   Class I   Class Z
   
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
1 year
  $ 667   $ 667   $ 469   $ 469   $ 274   $ 174   $ 73   $ 73   $ 60   $ 60
3 years
  $ 863   $ 863   $ 721   $ 721   $ 539   $ 539   $ 227   $ 227   $ 189   $ 189
5 years
  $ 1,075   $ 1,075   $ 992   $ 992   $ 928   $ 928   $ 395   $ 395   $ 329   $ 329
10 years
  $ 1,685   $ 1,685   $ 1,765   $ 1,765   $ 1,821   $ 1,821   $ 883   $ 883   $ 738   $ 738
The following information replaces similar information for Fidelity Asset Manager® 70% found in the “Fund Summary” section under the “Fee Table” heading.
Annual Operating Expenses
(expenses that you pay each year as a % of the value of your investment)
    Class A   Class M   Class C   Class I   Class Z      
Management fee
  0.68% A,B   0.67% A,B   0.68% A,B   0.66% A,B   0.56% A,B  
Distribution and/or Service (12b‑1) fees
  0.25%   0.50%   1.00%   None   None  
Other expenses
  0.01% B   0.01% B    0.02% B    0.01% B    0.01% B   
 
 
 
Total annual operating expenses
  0.94%   1.18%   1.70%   0.67%   0.57%  
A The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.18% for Class A, 0.18% for Class M, 0.19% for Class C, 0.17% for Class I, and 0.06% for Class Z was previously charged under the services agreements.
B Adjusted to reflect current fees.
    Class A   Class M   Class C   Class I   Class Z
   
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
1 year
  $ 665   $ 665   $ 466   $ 466   $ 273   $ 173   $ 68   $ 68   $ 58   $ 58
3 years
  $ 857   $ 857   $ 712   $ 712   $ 536   $ 536   $ 214   $ 214   $ 183   $ 183
5 years
  $ 1,065   $ 1,065   $ 976   $ 976   $ 923   $ 923   $ 373   $ 373   $ 318   $ 318
10 years
  $ 1,663   $ 1,663   $ 1,732   $ 1,732   $ 1,807   $ 1,807   $ 835   $ 835   $ 714   $ 714
The following information replaces similar information for Fidelity Asset Manager® 85% found in the “Fund Summary” section under the “Fee Table” heading.
Annual Operating Expenses
(expenses that you pay each year as a % of the value of your investment)
    Class A   Class M   Class C   Class I   Class Z      
Management fee
  0.68% A,B   0.68% A,B    0.69% A,B    0.68% A,B    0.56% A,B  
Distribution and/or Service (12b‑1) fees
  0.25%   0.50%   1.00%   None   None  
Other expenses
  0.01% B   0.01% B   0.01% B   0.01% B   0.01% B  
Acquired fund fees and expenses
  0.01%   0.01%   0.01%   0.01%   0.01%  
 
 
 
Total annual operating expenses
  0.95%   1.20%   1.71%   0.70%   0.58%  
A The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.19% for Class A, 0.19% for Class M, 0.20% for Class C, 0.18% for Class I, and 0.07% for Class Z was previously charged under the services agreements.
Adjusted to reflect current fees.
    Class A   Class M   Class C   Class I   Class Z
   
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
1 year
  $ 666   $ 666   $ 468   $ 468   $ 274   $ 174   $ 72   $ 72   $ 59   $ 59
3 years
  $ 860   $ 860   $ 718   $ 718   $ 539   $ 539   $ 224   $ 224   $ 186   $ 186
5 years
  $ 1,070   $ 1,070   $ 987   $ 987   $ 928   $ 928   $ 390   $ 390   $ 324   $ 324
10 years
  $ 1,674   $ 1,674   $ 1,754   $ 1,754   $ 1,818   $ 1,818   $ 871   $ 871   $ 726   $ 726
Supplement to the
Fidelity Asset Manager® Funds
Fidelity Asset Manager® 20%, Fidelity Asset Manager® 30%, Fidelity Asset Manager® 40%, Fidelity Asset Manager® 50%, Fidelity Asset Manager® 60%, Fidelity Asset Manager® 70%, and Fidelity Asset Manager® 85%
November 29, 2023
Prospectus
Effective March 1, 2024, each fund’s management contract was amended to incorporate administrative services previously covered under separate services agreements. Each amended contract incorporates a management fee rate that may vary by class. The Adviser or an affiliate pays certain expenses of managing and operating each fund out of each class’s management fee.
The following information replaces similar information for Fidelity Asset Manager® 20% found in the “Fund Summary” section under the “Fee Table” heading.
Annual Operating Expenses
(expenses that you pay each year as a % of the value of your investment)
Management fee
     0.48% A,B  
Distribution and/or Service (12b‑1) fees
     None  
Other expenses
     0.01% B  
    
 
 
Total annual operating expenses
     0.49%  
A The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.11% was previously charged under the services agreements.
B Adjusted to reflect current fees.
1 year
     $ 50  
3 years
     $ 157  
5 years
     $ 274  
10 years
     $ 616  
The following information replaces similar information for Fidelity Asset Manager® 30% found in the “Fund Summary” section under the “Fee Table” heading.
Annual Operating Expenses
(expenses that you pay each year as a % of the value of your investment)
Management fee
     0.49% A,B  
Distribution and/or Service (12b‑1) fees
     None  
Other expenses
     0.02% B  
    
 
 
Total annual operating expenses
     0.51%  
A The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.12% was previously charged under the services agreements.
B Adjusted to reflect current fees.
1 year
     $ 52  
3 years
     $ 164  
5 years
     $ 285  
10 years
     $ 640  
The following information replaces similar information for Fidelity Asset Manager® 40% found in the “Fund Summary” section under the “Fee Table” heading.
Annual Operating Expenses
(expenses that you pay each year as a % of the value of your investment)
Management fee
     0.50% A,B  
Distribution and/or Service (12b‑1) fees
     None  
Other expenses
     0.02% B  
    
 
 
Total annual operating expenses
     0.52%  
A The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.12% was previously charged under the services agreements.
B Adjusted to reflect current fees.
1 year
     $ 53  
3 years
     $ 167  
5 years
     $ 291  
10 years
     $ 653  
The following information replaces similar information for Fidelity Asset Manager® 50% found in the “Fund Summary” section under the “Fee Table” heading.
Annual Operating Expenses
(expenses that you pay each year as a % of the value of your investment)
Management fee
     0.55% A,B  
Distribution and/or Service (12b‑1) fees
     None  
Other expenses
     0.02% B  
    
 
 
Total annual operating expenses
     0.57%  
A The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.13% was previously charged under the services agreements.
B Adjusted to reflect current fees.
1 year
     $ 58  
3 years
     $ 183  
5 years
     $ 318  
10 years
     $ 714  
The following information replaces similar information for Fidelity Asset Manager® 60% found in the “Fund Summary” section under the “Fee Table” heading.
Annual Operating Expenses
(expenses that you pay each year as a % of the value of your investment)
Management fee
     0.64% A,B  
Distribution and/or Service (12b‑1) fees
     None  
Other expenses
     0.02% B  
    
 
 
Total annual operating expenses
     0.66%  
A The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.15% was previously charged under the services agreements.
B Adjusted to reflect current fees.
1 year
     $ 67  
3 years
     $ 211  
5 years
     $ 368  
10 years
     $ 822  
The following information replaces similar information for Fidelity Asset Manager® 70% found in the “Fund Summary” section under the “Fee Table” heading.
Annual Operating Expenses
(expenses that you pay each year as a % of the value of your investment)
Management fee
     0.64% A,B   
Distribution and/or Service (12b‑1) fees
     None  
Other expenses
     0.01% B  
    
 
 
Total annual operating expenses
     0.65%  
A The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.14% was previously charged under the services agreements.
B Adjusted to reflect current fees.
1 year
     $ 66  
3 years
     $ 208  
5 years
     $ 362  
10 years
     $ 810  
The following information replaces similar information for Fidelity Asset Manager® 85% found in the “Fund Summary” section under the “Fee Table” heading.
Annual Operating Expenses
(expenses that you pay each year as a % of the value of your investment)
Management fee
     0.65% A,B  
Distribution and/or Service (12b‑1) fees
     None  
Other expenses
     0.01% B  
Acquired fund fees and expenses
     0.01%  
    
 
 
Total annual operating expenses
     0.67%  
A The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.16% was previously charged under the services agreements.
B Adjusted to reflect current fees.
1 year
     $ 68  
3 years
     $ 214  
5 years
     $ 373  
10 years
     $ 835  
A M C I Z | Fidelity Asset Manager 20%  
Risk/Return: rr_RiskReturnAbstract  
Supplement to Prospectus [Text Block] rr_SupplementToProspectusTextBlock
Supplement to the
Fidelity Advisor Asset Manager® Funds
Fidelity Asset Manager® 20%, Fidelity Asset Manager® 30%, Fidelity Asset Manager® 40%, Fidelity Asset Manager® 50%, Fidelity Asset Manager® 60%, Fidelity Asset Manager® 70%, and Fidelity Asset Manager® 85%
Class A, Class M, Class C, Class I, and Class Z
November 29, 2023
Prospectus
Effective March 1, 2024, each fund’s management contract was amended to incorporate administrative services previously covered under separate services agreements. Each amended contract incorporates a management fee rate that may vary by class. The Adviser or an affiliate pays certain expenses of managing and operating each fund out of each class’s management fee.
The following information replaces similar information for Fidelity Asset Manager® 20% found in the “Fund Summary” section under the “Fee Table” heading.
Annual Operating Expenses
(expenses that you pay each year as a % of the value of your investment)
    Class A   Class M   Class C   Class I   Class Z      
Management fee
  0.52% A,B   0.52% A,B    0.52% A,B    0.52% A,B    0.45% A,B   
Distribution and/or Service (12b‑1) fees
  0.25%   0.50%   1.00%   None   None  
Other expenses
  0.01% B    0.01% B    0.01% B    0.01% B    0.01% B   
 
 
 
Total annual operating expenses
  0.78%   1.03%   1.53%   0.53%   0.46%  
A The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.17% for Class A, 0.16% for Class M, 0.16% for Class C, 0.14% for Class I, and 0.07% for Class Z was previously charged under the services agreements.
B Adjusted to reflect current fees.
    Class A   Class M   Class C   Class I   Class Z
   
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
1 year
  $ 650   $ 650   $ 451   $ 451   $ 256   $ 156   $ 54   $ 54   $ 47   $ 47
3 years
  $ 810   $ 810   $ 666   $ 666   $ 483   $ 483   $ 170   $ 170   $ 148   $ 148
5 years
  $ 983   $ 983   $ 899   $ 899   $ 834   $ 834   $ 296   $ 296   $ 258   $ 258
10 years
  $ 1,486   $ 1,486   $ 1,565   $ 1,565   $ 1,621   $ 1,621   $ 665   $ 665   $ 579   $ 579
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Operating Expenses (expenses that you pay each year as a % of the value of your investment)
Expenses Restated to Reflect Current [Text] rr_ExpensesRestatedToReflectCurrent Adjusted to reflect current fees.
A M C I Z | Fidelity Asset Manager 20% | Class A  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.52% [1],[2]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other expenses rr_OtherExpensesOverAssets 0.01% [1]
Total annual operating expenses rr_ExpensesOverAssets 0.78%
1 year rr_ExpenseExampleYear01 $ 650
3 years rr_ExpenseExampleYear03 810
5 years rr_ExpenseExampleYear05 983
10 years rr_ExpenseExampleYear10 1,486
1 year rr_ExpenseExampleNoRedemptionYear01 650
3 years rr_ExpenseExampleNoRedemptionYear03 810
5 years rr_ExpenseExampleNoRedemptionYear05 983
10 years rr_ExpenseExampleNoRedemptionYear10 $ 1,486
A M C I Z | Fidelity Asset Manager 20% | Class M  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.52% [1],[2]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.50%
Other expenses rr_OtherExpensesOverAssets 0.01% [1]
Total annual operating expenses rr_ExpensesOverAssets 1.03%
1 year rr_ExpenseExampleYear01 $ 451
3 years rr_ExpenseExampleYear03 666
5 years rr_ExpenseExampleYear05 899
10 years rr_ExpenseExampleYear10 1,565
1 year rr_ExpenseExampleNoRedemptionYear01 451
3 years rr_ExpenseExampleNoRedemptionYear03 666
5 years rr_ExpenseExampleNoRedemptionYear05 899
10 years rr_ExpenseExampleNoRedemptionYear10 $ 1,565
A M C I Z | Fidelity Asset Manager 20% | Class C  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.52% [1],[2]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other expenses rr_OtherExpensesOverAssets 0.01% [1]
Total annual operating expenses rr_ExpensesOverAssets 1.53%
1 year rr_ExpenseExampleYear01 $ 256
3 years rr_ExpenseExampleYear03 483
5 years rr_ExpenseExampleYear05 834
10 years rr_ExpenseExampleYear10 1,621
1 year rr_ExpenseExampleNoRedemptionYear01 156
3 years rr_ExpenseExampleNoRedemptionYear03 483
5 years rr_ExpenseExampleNoRedemptionYear05 834
10 years rr_ExpenseExampleNoRedemptionYear10 $ 1,621
A M C I Z | Fidelity Asset Manager 20% | Class I  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.52% [1],[2]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.01% [1]
Total annual operating expenses rr_ExpensesOverAssets 0.53%
1 year rr_ExpenseExampleYear01 $ 54
3 years rr_ExpenseExampleYear03 170
5 years rr_ExpenseExampleYear05 296
10 years rr_ExpenseExampleYear10 665
1 year rr_ExpenseExampleNoRedemptionYear01 54
3 years rr_ExpenseExampleNoRedemptionYear03 170
5 years rr_ExpenseExampleNoRedemptionYear05 296
10 years rr_ExpenseExampleNoRedemptionYear10 $ 665
A M C I Z | Fidelity Asset Manager 20% | Class Z  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.45% [1],[2]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.01% [1]
Total annual operating expenses rr_ExpensesOverAssets 0.46%
1 year rr_ExpenseExampleYear01 $ 47
3 years rr_ExpenseExampleYear03 148
5 years rr_ExpenseExampleYear05 258
10 years rr_ExpenseExampleYear10 579
1 year rr_ExpenseExampleNoRedemptionYear01 47
3 years rr_ExpenseExampleNoRedemptionYear03 148
5 years rr_ExpenseExampleNoRedemptionYear05 258
10 years rr_ExpenseExampleNoRedemptionYear10 $ 579
A M C I Z | Fidelity Asset Manager 30%  
Risk/Return: rr_RiskReturnAbstract  
Supplement to Prospectus [Text Block] rr_SupplementToProspectusTextBlock
Supplement to the
Fidelity Advisor Asset Manager® Funds
Fidelity Asset Manager® 20%, Fidelity Asset Manager® 30%, Fidelity Asset Manager® 40%, Fidelity Asset Manager® 50%, Fidelity Asset Manager® 60%, Fidelity Asset Manager® 70%, and Fidelity Asset Manager® 85%
Class A, Class M, Class C, Class I, and Class Z
November 29, 2023
Prospectus
Effective March 1, 2024, each fund’s management contract was amended to incorporate administrative services previously covered under separate services agreements. Each amended contract incorporates a management fee rate that may vary by class. The Adviser or an affiliate pays certain expenses of managing and operating each fund out of each class’s management fee.
The following information replaces similar information for Fidelity Asset Manager® 30% found in the “Fund Summary” section under the “Fee Table” heading.
Annual Operating Expenses
(expenses that you pay each year as a % of the value of your investment)
    Class A   Class M   Class C   Class I   Class Z      
Management fee
  0.53% A,B   0.53% A,B   0.53% A,B   0.53% A,B   0.46% A,B  
Distribution and/or Service (12b‑1) fees
  0.25%   0.50%   1.00%   None   None  
Other expenses
  0.02% B    0.02% B    0.02% B    0.02% B    0.02% B   
 
 
 
Total annual operating expenses
  0.80%   1.05%   1.55%   0.55%   0.48%  
A The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.16% for Class A, 0.16% for Class M, 0.17% for Class C, 0.17% for Class I, and 0.08% for Class Z was previously charged under the services agreements.
B Adjusted to reflect current fees.
    Class A   Class M   Class C   Class I   Class Z
   
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
1 year
  $ 652   $ 652   $ 453   $ 453   $ 258   $ 158   $ 56   $ 56   $ 49   $ 49
3 years
  $ 816   $ 816   $ 672   $ 672   $ 490   $ 490   $ 176   $ 176   $ 154   $ 154
5 years
  $ 994   $ 994   $ 909   $ 909   $ 845   $ 845   $ 307   $ 307   $ 269   $ 269
10 years
  $ 1,508   $ 1,508   $ 1,588   $ 1,588   $ 1,643   $ 1,643   $ 689   $ 689   $ 604   $ 604
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Operating Expenses (expenses that you pay each year as a % of the value of your investment)
Expenses Restated to Reflect Current [Text] rr_ExpensesRestatedToReflectCurrent Adjusted to reflect current fees.
A M C I Z | Fidelity Asset Manager 30% | Class A  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.53% [1],[3]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other expenses rr_OtherExpensesOverAssets 0.02% [1]
Total annual operating expenses rr_ExpensesOverAssets 0.80%
1 year rr_ExpenseExampleYear01 $ 652
3 years rr_ExpenseExampleYear03 816
5 years rr_ExpenseExampleYear05 994
10 years rr_ExpenseExampleYear10 1,508
1 year rr_ExpenseExampleNoRedemptionYear01 652
3 years rr_ExpenseExampleNoRedemptionYear03 816
5 years rr_ExpenseExampleNoRedemptionYear05 994
10 years rr_ExpenseExampleNoRedemptionYear10 $ 1,508
A M C I Z | Fidelity Asset Manager 30% | Class M  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.53% [1],[3]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.50%
Other expenses rr_OtherExpensesOverAssets 0.02% [1]
Total annual operating expenses rr_ExpensesOverAssets 1.05%
1 year rr_ExpenseExampleYear01 $ 453
3 years rr_ExpenseExampleYear03 672
5 years rr_ExpenseExampleYear05 909
10 years rr_ExpenseExampleYear10 1,588
1 year rr_ExpenseExampleNoRedemptionYear01 453
3 years rr_ExpenseExampleNoRedemptionYear03 672
5 years rr_ExpenseExampleNoRedemptionYear05 909
10 years rr_ExpenseExampleNoRedemptionYear10 $ 1,588
A M C I Z | Fidelity Asset Manager 30% | Class C  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.53% [1],[3]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other expenses rr_OtherExpensesOverAssets 0.02% [1]
Total annual operating expenses rr_ExpensesOverAssets 1.55%
1 year rr_ExpenseExampleYear01 $ 258
3 years rr_ExpenseExampleYear03 490
5 years rr_ExpenseExampleYear05 845
10 years rr_ExpenseExampleYear10 1,643
1 year rr_ExpenseExampleNoRedemptionYear01 158
3 years rr_ExpenseExampleNoRedemptionYear03 490
5 years rr_ExpenseExampleNoRedemptionYear05 845
10 years rr_ExpenseExampleNoRedemptionYear10 $ 1,643
A M C I Z | Fidelity Asset Manager 30% | Class I  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.53% [1],[3]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.02% [1]
Total annual operating expenses rr_ExpensesOverAssets 0.55%
1 year rr_ExpenseExampleYear01 $ 56
3 years rr_ExpenseExampleYear03 176
5 years rr_ExpenseExampleYear05 307
10 years rr_ExpenseExampleYear10 689
1 year rr_ExpenseExampleNoRedemptionYear01 56
3 years rr_ExpenseExampleNoRedemptionYear03 176
5 years rr_ExpenseExampleNoRedemptionYear05 307
10 years rr_ExpenseExampleNoRedemptionYear10 $ 689
A M C I Z | Fidelity Asset Manager 30% | Class Z  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.46% [1],[3]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.02% [1]
Total annual operating expenses rr_ExpensesOverAssets 0.48%
1 year rr_ExpenseExampleYear01 $ 49
3 years rr_ExpenseExampleYear03 154
5 years rr_ExpenseExampleYear05 269
10 years rr_ExpenseExampleYear10 604
1 year rr_ExpenseExampleNoRedemptionYear01 49
3 years rr_ExpenseExampleNoRedemptionYear03 154
5 years rr_ExpenseExampleNoRedemptionYear05 269
10 years rr_ExpenseExampleNoRedemptionYear10 $ 604
A M C I Z | Fidelity Asset Manager 40%  
Risk/Return: rr_RiskReturnAbstract  
Supplement to Prospectus [Text Block] rr_SupplementToProspectusTextBlock
Supplement to the
Fidelity Advisor Asset Manager® Funds
Fidelity Asset Manager® 20%, Fidelity Asset Manager® 30%, Fidelity Asset Manager® 40%, Fidelity Asset Manager® 50%, Fidelity Asset Manager® 60%, Fidelity Asset Manager® 70%, and Fidelity Asset Manager® 85%
Class A, Class M, Class C, Class I, and Class Z
November 29, 2023
Prospectus
Effective March 1, 2024, each fund’s management contract was amended to incorporate administrative services previously covered under separate services agreements. Each amended contract incorporates a management fee rate that may vary by class. The Adviser or an affiliate pays certain expenses of managing and operating each fund out of each class’s management fee.
The following information replaces similar information for Fidelity Asset Manager® 40% found in the “Fund Summary” section under the “Fee Table” heading.
Annual Operating Expenses
(expenses that you pay each year as a % of the value of your investment)
    Class A   Class M   Class C   Class I   Class Z      
Management fee
  0.53% A,B   0.53% A,B    0.53% A,B   0.53% A,B   0.46% A,B  
Distribution and/or Service (12b‑1) fees
  0.25%   0.50%   1.00%   None   None  
Other expenses
  0.01% B    0.01% B    0.01% B    0.01% B    0.02% B   
 
 
 
Total annual operating expenses
  0.79%   1.04%   1.54%   0.54%   0.48%  
A The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.17% for Class A, 0.16% for Class M, 0.18% for Class C, 0.16% for Class I, and 0.08% for Class Z was previously charged under the services agreements.
B Adjusted to reflect current fees.
    Class A   Class M   Class C   Class I   Class Z
   
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
1 year
  $ 651   $ 651   $ 452   $ 452   $ 257   $ 157   $ 55   $ 55   $ 49   $ 49
3 years
  $ 813   $ 813   $ 669   $ 669   $ 486   $ 486   $ 173   $ 173   $ 154   $ 154
5 years
  $ 989   $ 989   $ 904   $ 904   $ 839   $ 839   $ 302   $ 302   $ 269   $ 269
10 years
  $ 1,497   $ 1,497   $ 1,577   $ 1,577   $ 1,632   $ 1,632   $ 677   $ 677   $ 604   $ 604
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Operating Expenses (expenses that you pay each year as a % of the value of your investment)
Expenses Restated to Reflect Current [Text] rr_ExpensesRestatedToReflectCurrent Adjusted to reflect current fees.
A M C I Z | Fidelity Asset Manager 40% | Class A  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.53% [1],[4]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other expenses rr_OtherExpensesOverAssets 0.01% [1]
Total annual operating expenses rr_ExpensesOverAssets 0.79%
1 year rr_ExpenseExampleYear01 $ 651
3 years rr_ExpenseExampleYear03 813
5 years rr_ExpenseExampleYear05 989
10 years rr_ExpenseExampleYear10 1,497
1 year rr_ExpenseExampleNoRedemptionYear01 651
3 years rr_ExpenseExampleNoRedemptionYear03 813
5 years rr_ExpenseExampleNoRedemptionYear05 989
10 years rr_ExpenseExampleNoRedemptionYear10 $ 1,497
A M C I Z | Fidelity Asset Manager 40% | Class M  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.53% [1],[4]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.50%
Other expenses rr_OtherExpensesOverAssets 0.01% [1]
Total annual operating expenses rr_ExpensesOverAssets 1.04%
1 year rr_ExpenseExampleYear01 $ 452
3 years rr_ExpenseExampleYear03 669
5 years rr_ExpenseExampleYear05 904
10 years rr_ExpenseExampleYear10 1,577
1 year rr_ExpenseExampleNoRedemptionYear01 452
3 years rr_ExpenseExampleNoRedemptionYear03 669
5 years rr_ExpenseExampleNoRedemptionYear05 904
10 years rr_ExpenseExampleNoRedemptionYear10 $ 1,577
A M C I Z | Fidelity Asset Manager 40% | Class C  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.53% [1],[4]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other expenses rr_OtherExpensesOverAssets 0.01% [1]
Total annual operating expenses rr_ExpensesOverAssets 1.54%
1 year rr_ExpenseExampleYear01 $ 257
3 years rr_ExpenseExampleYear03 486
5 years rr_ExpenseExampleYear05 839
10 years rr_ExpenseExampleYear10 1,632
1 year rr_ExpenseExampleNoRedemptionYear01 157
3 years rr_ExpenseExampleNoRedemptionYear03 486
5 years rr_ExpenseExampleNoRedemptionYear05 839
10 years rr_ExpenseExampleNoRedemptionYear10 $ 1,632
A M C I Z | Fidelity Asset Manager 40% | Class I  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.53% [1],[4]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.01% [1]
Total annual operating expenses rr_ExpensesOverAssets 0.54%
1 year rr_ExpenseExampleYear01 $ 55
3 years rr_ExpenseExampleYear03 173
5 years rr_ExpenseExampleYear05 302
10 years rr_ExpenseExampleYear10 677
1 year rr_ExpenseExampleNoRedemptionYear01 55
3 years rr_ExpenseExampleNoRedemptionYear03 173
5 years rr_ExpenseExampleNoRedemptionYear05 302
10 years rr_ExpenseExampleNoRedemptionYear10 $ 677
A M C I Z | Fidelity Asset Manager 40% | Class Z  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.46% [1],[4]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.02% [1]
Total annual operating expenses rr_ExpensesOverAssets 0.48%
1 year rr_ExpenseExampleYear01 $ 49
3 years rr_ExpenseExampleYear03 154
5 years rr_ExpenseExampleYear05 269
10 years rr_ExpenseExampleYear10 604
1 year rr_ExpenseExampleNoRedemptionYear01 49
3 years rr_ExpenseExampleNoRedemptionYear03 154
5 years rr_ExpenseExampleNoRedemptionYear05 269
10 years rr_ExpenseExampleNoRedemptionYear10 $ 604
A M C I Z | Fidelity Asset Manager 50%  
Risk/Return: rr_RiskReturnAbstract  
Supplement to Prospectus [Text Block] rr_SupplementToProspectusTextBlock
Supplement to the
Fidelity Advisor Asset Manager® Funds
Fidelity Asset Manager® 20%, Fidelity Asset Manager® 30%, Fidelity Asset Manager® 40%, Fidelity Asset Manager® 50%, Fidelity Asset Manager® 60%, Fidelity Asset Manager® 70%, and Fidelity Asset Manager® 85%
Class A, Class M, Class C, Class I, and Class Z
November 29, 2023
Prospectus
Effective March 1, 2024, each fund’s management contract was amended to incorporate administrative services previously covered under separate services agreements. Each amended contract incorporates a management fee rate that may vary by class. The Adviser or an affiliate pays certain expenses of managing and operating each fund out of each class’s management fee.
The following information replaces similar information for Fidelity Asset Manager® 50% found in the “Fund Summary” section under the “Fee Table” heading.
Annual Operating Expenses
(expenses that you pay each year as a % of the value of your investment)
    Class A   Class M   Class C   Class I   Class Z      
Management fee
  0.59% A,B   0.59% A,B    0.59% A,B    0.59% A,B    0.47% A,B   
Distribution and/or Service (12b‑1) fees
  0.25%   0.50%   1.00%   None   None  
Other expenses
  0.01% B    0.01% B    0.01% B    0.01% B    0.01% B   
 
 
 
Total annual operating expenses
  0.85%   1.10%   1.60%   0.60%   0.48%  
A The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.18% for Class A, 0.17% for Class M, 0.18% for Class C, 0.16% for Class I, and 0.06% for Class Z was previously charged under the services agreements.
B Adjusted to reflect current fees.
    Class A   Class M   Class C   Class I   Class Z
   
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
1 year
  $ 657   $ 657   $ 458   $ 458   $ 263   $ 163   $ 61   $ 61   $ 49   $ 49
3 years
  $ 831   $ 831   $ 687   $ 687   $ 505   $ 505   $ 192   $ 192   $ 154   $ 154
5 years
  $ 1,019   $ 1,019   $ 935   $ 935   $ 871   $ 871   $ 335   $ 335   $ 269   $ 269
10 years
  $ 1,564   $ 1,564   $ 1,643   $ 1,643   $ 1,699   $ 1,699   $ 750   $ 750   $ 604   $ 604
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Operating Expenses (expenses that you pay each year as a % of the value of your investment)
Expenses Restated to Reflect Current [Text] rr_ExpensesRestatedToReflectCurrent Adjusted to reflect current fees.
A M C I Z | Fidelity Asset Manager 50% | Class A  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.59% [1],[5]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other expenses rr_OtherExpensesOverAssets 0.01% [1]
Total annual operating expenses rr_ExpensesOverAssets 0.85%
1 year rr_ExpenseExampleYear01 $ 657
3 years rr_ExpenseExampleYear03 831
5 years rr_ExpenseExampleYear05 1,019
10 years rr_ExpenseExampleYear10 1,564
1 year rr_ExpenseExampleNoRedemptionYear01 657
3 years rr_ExpenseExampleNoRedemptionYear03 831
5 years rr_ExpenseExampleNoRedemptionYear05 1,019
10 years rr_ExpenseExampleNoRedemptionYear10 $ 1,564
A M C I Z | Fidelity Asset Manager 50% | Class M  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.59% [1],[5]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.50%
Other expenses rr_OtherExpensesOverAssets 0.01% [1]
Total annual operating expenses rr_ExpensesOverAssets 1.10%
1 year rr_ExpenseExampleYear01 $ 458
3 years rr_ExpenseExampleYear03 687
5 years rr_ExpenseExampleYear05 935
10 years rr_ExpenseExampleYear10 1,643
1 year rr_ExpenseExampleNoRedemptionYear01 458
3 years rr_ExpenseExampleNoRedemptionYear03 687
5 years rr_ExpenseExampleNoRedemptionYear05 935
10 years rr_ExpenseExampleNoRedemptionYear10 $ 1,643
A M C I Z | Fidelity Asset Manager 50% | Class C  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.59% [1],[5]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other expenses rr_OtherExpensesOverAssets 0.01% [1]
Total annual operating expenses rr_ExpensesOverAssets 1.60%
1 year rr_ExpenseExampleYear01 $ 263
3 years rr_ExpenseExampleYear03 505
5 years rr_ExpenseExampleYear05 871
10 years rr_ExpenseExampleYear10 1,699
1 year rr_ExpenseExampleNoRedemptionYear01 163
3 years rr_ExpenseExampleNoRedemptionYear03 505
5 years rr_ExpenseExampleNoRedemptionYear05 871
10 years rr_ExpenseExampleNoRedemptionYear10 $ 1,699
A M C I Z | Fidelity Asset Manager 50% | Class I  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.59% [1],[5]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.01% [1]
Total annual operating expenses rr_ExpensesOverAssets 0.60%
1 year rr_ExpenseExampleYear01 $ 61
3 years rr_ExpenseExampleYear03 192
5 years rr_ExpenseExampleYear05 335
10 years rr_ExpenseExampleYear10 750
1 year rr_ExpenseExampleNoRedemptionYear01 61
3 years rr_ExpenseExampleNoRedemptionYear03 192
5 years rr_ExpenseExampleNoRedemptionYear05 335
10 years rr_ExpenseExampleNoRedemptionYear10 $ 750
A M C I Z | Fidelity Asset Manager 50% | Class Z  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.47% [1],[5]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.01% [1]
Total annual operating expenses rr_ExpensesOverAssets 0.48%
1 year rr_ExpenseExampleYear01 $ 49
3 years rr_ExpenseExampleYear03 154
5 years rr_ExpenseExampleYear05 269
10 years rr_ExpenseExampleYear10 604
1 year rr_ExpenseExampleNoRedemptionYear01 49
3 years rr_ExpenseExampleNoRedemptionYear03 154
5 years rr_ExpenseExampleNoRedemptionYear05 269
10 years rr_ExpenseExampleNoRedemptionYear10 $ 604
A M C I Z | Fidelity Asset Manager 60%  
Risk/Return: rr_RiskReturnAbstract  
Supplement to Prospectus [Text Block] rr_SupplementToProspectusTextBlock
Supplement to the
Fidelity Advisor Asset Manager® Funds
Fidelity Asset Manager® 20%, Fidelity Asset Manager® 30%, Fidelity Asset Manager® 40%, Fidelity Asset Manager® 50%, Fidelity Asset Manager® 60%, Fidelity Asset Manager® 70%, and Fidelity Asset Manager® 85%
Class A, Class M, Class C, Class I, and Class Z
November 29, 2023
Prospectus
Effective March 1, 2024, each fund’s management contract was amended to incorporate administrative services previously covered under separate services agreements. Each amended contract incorporates a management fee rate that may vary by class. The Adviser or an affiliate pays certain expenses of managing and operating each fund out of each class’s management fee.
The following information replaces similar information for Fidelity Asset Manager® 60% found in the “Fund Summary” section under the “Fee Table” heading.
Annual Operating Expenses
(expenses that you pay each year as a % of the value of your investment)
    Class A   Class M   Class C   Class I   Class Z      
Management fee
  0.69% A,B   0.69% A,B   0.69%A,B   0.69% A,B   0.57%A,B  
Distribution and/or Service (12b‑1) fees
  0.25%   0.50%   1.00%   None   None  
Other expenses
  0.02% B    0.02% B    0.02% B    0.02% B    0.02% B   
 
 
 
Total annual operating expenses
  0.96%   1.21%   1.71%   0.71%   0.59%  
A The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.21% for Class A, 0.20% for Class M, 0.22% for Class C, 0.21% for Class I, and 0.07% for Class Z was previously charged under the services agreements.
B Adjusted to reflect current fees.
    Class A   Class M   Class C   Class I   Class Z
   
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
1 year
  $ 667   $ 667   $ 469   $ 469   $ 274   $ 174   $ 73   $ 73   $ 60   $ 60
3 years
  $ 863   $ 863   $ 721   $ 721   $ 539   $ 539   $ 227   $ 227   $ 189   $ 189
5 years
  $ 1,075   $ 1,075   $ 992   $ 992   $ 928   $ 928   $ 395   $ 395   $ 329   $ 329
10 years
  $ 1,685   $ 1,685   $ 1,765   $ 1,765   $ 1,821   $ 1,821   $ 883   $ 883   $ 738   $ 738
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Operating Expenses (expenses that you pay each year as a % of the value of your investment)
Expenses Restated to Reflect Current [Text] rr_ExpensesRestatedToReflectCurrent Adjusted to reflect current fees.
A M C I Z | Fidelity Asset Manager 60% | Class A  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.69% [1],[6]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other expenses rr_OtherExpensesOverAssets 0.02% [1]
Total annual operating expenses rr_ExpensesOverAssets 0.96%
1 year rr_ExpenseExampleYear01 $ 667
3 years rr_ExpenseExampleYear03 863
5 years rr_ExpenseExampleYear05 1,075
10 years rr_ExpenseExampleYear10 1,685
1 year rr_ExpenseExampleNoRedemptionYear01 667
3 years rr_ExpenseExampleNoRedemptionYear03 863
5 years rr_ExpenseExampleNoRedemptionYear05 1,075
10 years rr_ExpenseExampleNoRedemptionYear10 $ 1,685
A M C I Z | Fidelity Asset Manager 60% | Class M  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.69% [1],[6]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.50%
Other expenses rr_OtherExpensesOverAssets 0.02% [1]
Total annual operating expenses rr_ExpensesOverAssets 1.21%
1 year rr_ExpenseExampleYear01 $ 469
3 years rr_ExpenseExampleYear03 721
5 years rr_ExpenseExampleYear05 992
10 years rr_ExpenseExampleYear10 1,765
1 year rr_ExpenseExampleNoRedemptionYear01 469
3 years rr_ExpenseExampleNoRedemptionYear03 721
5 years rr_ExpenseExampleNoRedemptionYear05 992
10 years rr_ExpenseExampleNoRedemptionYear10 $ 1,765
A M C I Z | Fidelity Asset Manager 60% | Class C  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.69% [1],[6]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other expenses rr_OtherExpensesOverAssets 0.02% [1]
Total annual operating expenses rr_ExpensesOverAssets 1.71%
1 year rr_ExpenseExampleYear01 $ 274
3 years rr_ExpenseExampleYear03 539
5 years rr_ExpenseExampleYear05 928
10 years rr_ExpenseExampleYear10 1,821
1 year rr_ExpenseExampleNoRedemptionYear01 174
3 years rr_ExpenseExampleNoRedemptionYear03 539
5 years rr_ExpenseExampleNoRedemptionYear05 928
10 years rr_ExpenseExampleNoRedemptionYear10 $ 1,821
A M C I Z | Fidelity Asset Manager 60% | Class I  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.69% [1],[6]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.02% [1]
Total annual operating expenses rr_ExpensesOverAssets 0.71%
1 year rr_ExpenseExampleYear01 $ 73
3 years rr_ExpenseExampleYear03 227
5 years rr_ExpenseExampleYear05 395
10 years rr_ExpenseExampleYear10 883
1 year rr_ExpenseExampleNoRedemptionYear01 73
3 years rr_ExpenseExampleNoRedemptionYear03 227
5 years rr_ExpenseExampleNoRedemptionYear05 395
10 years rr_ExpenseExampleNoRedemptionYear10 $ 883
A M C I Z | Fidelity Asset Manager 60% | Class Z  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.57% [1],[6]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.02% [1]
Total annual operating expenses rr_ExpensesOverAssets 0.59%
1 year rr_ExpenseExampleYear01 $ 60
3 years rr_ExpenseExampleYear03 189
5 years rr_ExpenseExampleYear05 329
10 years rr_ExpenseExampleYear10 738
1 year rr_ExpenseExampleNoRedemptionYear01 60
3 years rr_ExpenseExampleNoRedemptionYear03 189
5 years rr_ExpenseExampleNoRedemptionYear05 329
10 years rr_ExpenseExampleNoRedemptionYear10 $ 738
A M C I Z | Fidelity Asset Manager 70%  
Risk/Return: rr_RiskReturnAbstract  
Supplement to Prospectus [Text Block] rr_SupplementToProspectusTextBlock
Supplement to the
Fidelity Advisor Asset Manager® Funds
Fidelity Asset Manager® 20%, Fidelity Asset Manager® 30%, Fidelity Asset Manager® 40%, Fidelity Asset Manager® 50%, Fidelity Asset Manager® 60%, Fidelity Asset Manager® 70%, and Fidelity Asset Manager® 85%
Class A, Class M, Class C, Class I, and Class Z
November 29, 2023
Prospectus
Effective March 1, 2024, each fund’s management contract was amended to incorporate administrative services previously covered under separate services agreements. Each amended contract incorporates a management fee rate that may vary by class. The Adviser or an affiliate pays certain expenses of managing and operating each fund out of each class’s management fee.
The following information replaces similar information for Fidelity Asset Manager® 70% found in the “Fund Summary” section under the “Fee Table” heading.
Annual Operating Expenses
(expenses that you pay each year as a % of the value of your investment)
    Class A   Class M   Class C   Class I   Class Z      
Management fee
  0.68% A,B   0.67% A,B   0.68% A,B   0.66% A,B   0.56% A,B  
Distribution and/or Service (12b‑1) fees
  0.25%   0.50%   1.00%   None   None  
Other expenses
  0.01% B   0.01% B    0.02% B    0.01% B    0.01% B   
 
 
 
Total annual operating expenses
  0.94%   1.18%   1.70%   0.67%   0.57%  
A The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.18% for Class A, 0.18% for Class M, 0.19% for Class C, 0.17% for Class I, and 0.06% for Class Z was previously charged under the services agreements.
B Adjusted to reflect current fees.
    Class A   Class M   Class C   Class I   Class Z
   
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
1 year
  $ 665   $ 665   $ 466   $ 466   $ 273   $ 173   $ 68   $ 68   $ 58   $ 58
3 years
  $ 857   $ 857   $ 712   $ 712   $ 536   $ 536   $ 214   $ 214   $ 183   $ 183
5 years
  $ 1,065   $ 1,065   $ 976   $ 976   $ 923   $ 923   $ 373   $ 373   $ 318   $ 318
10 years
  $ 1,663   $ 1,663   $ 1,732   $ 1,732   $ 1,807   $ 1,807   $ 835   $ 835   $ 714   $ 714
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Operating Expenses (expenses that you pay each year as a % of the value of your investment)
Expenses Restated to Reflect Current [Text] rr_ExpensesRestatedToReflectCurrent Adjusted to reflect current fees.
A M C I Z | Fidelity Asset Manager 70% | Class A  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.68% [1],[7]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other expenses rr_OtherExpensesOverAssets 0.01% [1]
Total annual operating expenses rr_ExpensesOverAssets 0.94%
1 year rr_ExpenseExampleYear01 $ 665
3 years rr_ExpenseExampleYear03 857
5 years rr_ExpenseExampleYear05 1,065
10 years rr_ExpenseExampleYear10 1,663
1 year rr_ExpenseExampleNoRedemptionYear01 665
3 years rr_ExpenseExampleNoRedemptionYear03 857
5 years rr_ExpenseExampleNoRedemptionYear05 1,065
10 years rr_ExpenseExampleNoRedemptionYear10 $ 1,663
A M C I Z | Fidelity Asset Manager 70% | Class M  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.67% [1],[7]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.50%
Other expenses rr_OtherExpensesOverAssets 0.01% [1]
Total annual operating expenses rr_ExpensesOverAssets 1.18%
1 year rr_ExpenseExampleYear01 $ 466
3 years rr_ExpenseExampleYear03 712
5 years rr_ExpenseExampleYear05 976
10 years rr_ExpenseExampleYear10 1,732
1 year rr_ExpenseExampleNoRedemptionYear01 466
3 years rr_ExpenseExampleNoRedemptionYear03 712
5 years rr_ExpenseExampleNoRedemptionYear05 976
10 years rr_ExpenseExampleNoRedemptionYear10 $ 1,732
A M C I Z | Fidelity Asset Manager 70% | Class C  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.68% [1],[7]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other expenses rr_OtherExpensesOverAssets 0.02% [1]
Total annual operating expenses rr_ExpensesOverAssets 1.70%
1 year rr_ExpenseExampleYear01 $ 273
3 years rr_ExpenseExampleYear03 536
5 years rr_ExpenseExampleYear05 923
10 years rr_ExpenseExampleYear10 1,807
1 year rr_ExpenseExampleNoRedemptionYear01 173
3 years rr_ExpenseExampleNoRedemptionYear03 536
5 years rr_ExpenseExampleNoRedemptionYear05 923
10 years rr_ExpenseExampleNoRedemptionYear10 $ 1,807
A M C I Z | Fidelity Asset Manager 70% | Class I  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.66% [1],[7]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.01% [1]
Total annual operating expenses rr_ExpensesOverAssets 0.67%
1 year rr_ExpenseExampleYear01 $ 68
3 years rr_ExpenseExampleYear03 214
5 years rr_ExpenseExampleYear05 373
10 years rr_ExpenseExampleYear10 835
1 year rr_ExpenseExampleNoRedemptionYear01 68
3 years rr_ExpenseExampleNoRedemptionYear03 214
5 years rr_ExpenseExampleNoRedemptionYear05 373
10 years rr_ExpenseExampleNoRedemptionYear10 $ 835
A M C I Z | Fidelity Asset Manager 70% | Class Z  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.56% [1],[7]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.01% [1]
Total annual operating expenses rr_ExpensesOverAssets 0.57%
1 year rr_ExpenseExampleYear01 $ 58
3 years rr_ExpenseExampleYear03 183
5 years rr_ExpenseExampleYear05 318
10 years rr_ExpenseExampleYear10 714
1 year rr_ExpenseExampleNoRedemptionYear01 58
3 years rr_ExpenseExampleNoRedemptionYear03 183
5 years rr_ExpenseExampleNoRedemptionYear05 318
10 years rr_ExpenseExampleNoRedemptionYear10 $ 714
A M C I Z | Fidelity Asset Manager 85%  
Risk/Return: rr_RiskReturnAbstract  
Supplement to Prospectus [Text Block] rr_SupplementToProspectusTextBlock
Supplement to the
Fidelity Advisor Asset Manager® Funds
Fidelity Asset Manager® 20%, Fidelity Asset Manager® 30%, Fidelity Asset Manager® 40%, Fidelity Asset Manager® 50%, Fidelity Asset Manager® 60%, Fidelity Asset Manager® 70%, and Fidelity Asset Manager® 85%
Class A, Class M, Class C, Class I, and Class Z
November 29, 2023
Prospectus
Effective March 1, 2024, each fund’s management contract was amended to incorporate administrative services previously covered under separate services agreements. Each amended contract incorporates a management fee rate that may vary by class. The Adviser or an affiliate pays certain expenses of managing and operating each fund out of each class’s management fee.
The following information replaces similar information for Fidelity Asset Manager® 85% found in the “Fund Summary” section under the “Fee Table” heading.
Annual Operating Expenses
(expenses that you pay each year as a % of the value of your investment)
    Class A   Class M   Class C   Class I   Class Z      
Management fee
  0.68% A,B   0.68% A,B    0.69% A,B    0.68% A,B    0.56% A,B  
Distribution and/or Service (12b‑1) fees
  0.25%   0.50%   1.00%   None   None  
Other expenses
  0.01% B   0.01% B   0.01% B   0.01% B   0.01% B  
Acquired fund fees and expenses
  0.01%   0.01%   0.01%   0.01%   0.01%  
 
 
 
Total annual operating expenses
  0.95%   1.20%   1.71%   0.70%   0.58%  
A The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.19% for Class A, 0.19% for Class M, 0.20% for Class C, 0.18% for Class I, and 0.07% for Class Z was previously charged under the services agreements.
Adjusted to reflect current fees.
    Class A   Class M   Class C   Class I   Class Z
   
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
 
Sell All
Shares
 
Hold
Shares
1 year
  $ 666   $ 666   $ 468   $ 468   $ 274   $ 174   $ 72   $ 72   $ 59   $ 59
3 years
  $ 860   $ 860   $ 718   $ 718   $ 539   $ 539   $ 224   $ 224   $ 186   $ 186
5 years
  $ 1,070   $ 1,070   $ 987   $ 987   $ 928   $ 928   $ 390   $ 390   $ 324   $ 324
10 years
  $ 1,674   $ 1,674   $ 1,754   $ 1,754   $ 1,818   $ 1,818   $ 871   $ 871   $ 726   $ 726
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Operating Expenses (expenses that you pay each year as a % of the value of your investment)
Expenses Restated to Reflect Current [Text] rr_ExpensesRestatedToReflectCurrent Adjusted to reflect current fees.
A M C I Z | Fidelity Asset Manager 85% | Class A  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.68% [1],[8]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.25%
Other expenses rr_OtherExpensesOverAssets 0.01% [1]
Acquired fund fees and expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total annual operating expenses rr_ExpensesOverAssets 0.95%
1 year rr_ExpenseExampleYear01 $ 666
3 years rr_ExpenseExampleYear03 860
5 years rr_ExpenseExampleYear05 1,070
10 years rr_ExpenseExampleYear10 1,674
1 year rr_ExpenseExampleNoRedemptionYear01 666
3 years rr_ExpenseExampleNoRedemptionYear03 860
5 years rr_ExpenseExampleNoRedemptionYear05 1,070
10 years rr_ExpenseExampleNoRedemptionYear10 $ 1,674
A M C I Z | Fidelity Asset Manager 85% | Class M  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.68% [1],[8]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 0.50%
Other expenses rr_OtherExpensesOverAssets 0.01% [1]
Acquired fund fees and expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total annual operating expenses rr_ExpensesOverAssets 1.20%
1 year rr_ExpenseExampleYear01 $ 468
3 years rr_ExpenseExampleYear03 718
5 years rr_ExpenseExampleYear05 987
10 years rr_ExpenseExampleYear10 1,754
1 year rr_ExpenseExampleNoRedemptionYear01 468
3 years rr_ExpenseExampleNoRedemptionYear03 718
5 years rr_ExpenseExampleNoRedemptionYear05 987
10 years rr_ExpenseExampleNoRedemptionYear10 $ 1,754
A M C I Z | Fidelity Asset Manager 85% | Class C  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.69% [1],[8]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets 1.00%
Other expenses rr_OtherExpensesOverAssets 0.01% [1]
Acquired fund fees and expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total annual operating expenses rr_ExpensesOverAssets 1.71%
1 year rr_ExpenseExampleYear01 $ 274
3 years rr_ExpenseExampleYear03 539
5 years rr_ExpenseExampleYear05 928
10 years rr_ExpenseExampleYear10 1,818
1 year rr_ExpenseExampleNoRedemptionYear01 174
3 years rr_ExpenseExampleNoRedemptionYear03 539
5 years rr_ExpenseExampleNoRedemptionYear05 928
10 years rr_ExpenseExampleNoRedemptionYear10 $ 1,818
A M C I Z | Fidelity Asset Manager 85% | Class I  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.68% [1],[8]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.01% [1]
Acquired fund fees and expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total annual operating expenses rr_ExpensesOverAssets 0.70%
1 year rr_ExpenseExampleYear01 $ 72
3 years rr_ExpenseExampleYear03 224
5 years rr_ExpenseExampleYear05 390
10 years rr_ExpenseExampleYear10 871
1 year rr_ExpenseExampleNoRedemptionYear01 72
3 years rr_ExpenseExampleNoRedemptionYear03 224
5 years rr_ExpenseExampleNoRedemptionYear05 390
10 years rr_ExpenseExampleNoRedemptionYear10 $ 871
A M C I Z | Fidelity Asset Manager 85% | Class Z  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.56% [1],[8]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.01% [1]
Acquired fund fees and expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total annual operating expenses rr_ExpensesOverAssets 0.58%
1 year rr_ExpenseExampleYear01 $ 59
3 years rr_ExpenseExampleYear03 186
5 years rr_ExpenseExampleYear05 324
10 years rr_ExpenseExampleYear10 726
1 year rr_ExpenseExampleNoRedemptionYear01 59
3 years rr_ExpenseExampleNoRedemptionYear03 186
5 years rr_ExpenseExampleNoRedemptionYear05 324
10 years rr_ExpenseExampleNoRedemptionYear10 $ 726
Fidelity Asset Manager 20% | Fidelity Asset Manager 20%  
Risk/Return: rr_RiskReturnAbstract  
Supplement to Prospectus [Text Block] rr_SupplementToProspectusTextBlock
Supplement to the
Fidelity Asset Manager® Funds
Fidelity Asset Manager® 20%, Fidelity Asset Manager® 30%, Fidelity Asset Manager® 40%, Fidelity Asset Manager® 50%, Fidelity Asset Manager® 60%, Fidelity Asset Manager® 70%, and Fidelity Asset Manager® 85%
November 29, 2023
Prospectus
Effective March 1, 2024, each fund’s management contract was amended to incorporate administrative services previously covered under separate services agreements. Each amended contract incorporates a management fee rate that may vary by class. The Adviser or an affiliate pays certain expenses of managing and operating each fund out of each class’s management fee.
The following information replaces similar information for Fidelity Asset Manager® 20% found in the “Fund Summary” section under the “Fee Table” heading.
Annual Operating Expenses
(expenses that you pay each year as a % of the value of your investment)
Management fee
     0.48% A,B  
Distribution and/or Service (12b‑1) fees
     None  
Other expenses
     0.01% B  
    
 
 
Total annual operating expenses
     0.49%  
A The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.11% was previously charged under the services agreements.
B Adjusted to reflect current fees.
1 year
     $ 50  
3 years
     $ 157  
5 years
     $ 274  
10 years
     $ 616  
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Operating Expenses (expenses that you pay each year as a % of the value of your investment)
Expenses Restated to Reflect Current [Text] rr_ExpensesRestatedToReflectCurrent Adjusted to reflect current fees.
Fidelity Asset Manager 20% | Fidelity Asset Manager 20% | Fidelity Asset Manager 20%  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.48% [1],[9]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.01% [1]
Total annual operating expenses rr_ExpensesOverAssets 0.49%
1 year rr_ExpenseExampleYear01 $ 50
3 years rr_ExpenseExampleYear03 157
5 years rr_ExpenseExampleYear05 274
10 years rr_ExpenseExampleYear10 $ 616
Fidelity Asset Manager 30% | Fidelity Asset Manager 30%  
Risk/Return: rr_RiskReturnAbstract  
Supplement to Prospectus [Text Block] rr_SupplementToProspectusTextBlock
Supplement to the
Fidelity Asset Manager® Funds
Fidelity Asset Manager® 20%, Fidelity Asset Manager® 30%, Fidelity Asset Manager® 40%, Fidelity Asset Manager® 50%, Fidelity Asset Manager® 60%, Fidelity Asset Manager® 70%, and Fidelity Asset Manager® 85%
November 29, 2023
Prospectus
Effective March 1, 2024, each fund’s management contract was amended to incorporate administrative services previously covered under separate services agreements. Each amended contract incorporates a management fee rate that may vary by class. The Adviser or an affiliate pays certain expenses of managing and operating each fund out of each class’s management fee.
The following information replaces similar information for Fidelity Asset Manager® 30% found in the “Fund Summary” section under the “Fee Table” heading.
Annual Operating Expenses
(expenses that you pay each year as a % of the value of your investment)
Management fee
     0.49% A,B  
Distribution and/or Service (12b‑1) fees
     None  
Other expenses
     0.02% B  
    
 
 
Total annual operating expenses
     0.51%  
A The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.12% was previously charged under the services agreements.
B Adjusted to reflect current fees.
1 year
     $ 52  
3 years
     $ 164  
5 years
     $ 285  
10 years
     $ 640  
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Operating Expenses (expenses that you pay each year as a % of the value of your investment)
Expenses Restated to Reflect Current [Text] rr_ExpensesRestatedToReflectCurrent Adjusted to reflect current fees.
Fidelity Asset Manager 30% | Fidelity Asset Manager 30% | Fidelity Asset Manager 30%  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.49% [1],[10]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.02% [1]
Total annual operating expenses rr_ExpensesOverAssets 0.51%
1 year rr_ExpenseExampleYear01 $ 52
3 years rr_ExpenseExampleYear03 164
5 years rr_ExpenseExampleYear05 285
10 years rr_ExpenseExampleYear10 $ 640
Fidelity Asset Manager 40% | Fidelity Asset Manager 40%  
Risk/Return: rr_RiskReturnAbstract  
Supplement to Prospectus [Text Block] rr_SupplementToProspectusTextBlock
Supplement to the
Fidelity Asset Manager® Funds
Fidelity Asset Manager® 20%, Fidelity Asset Manager® 30%, Fidelity Asset Manager® 40%, Fidelity Asset Manager® 50%, Fidelity Asset Manager® 60%, Fidelity Asset Manager® 70%, and Fidelity Asset Manager® 85%
November 29, 2023
Prospectus
Effective March 1, 2024, each fund’s management contract was amended to incorporate administrative services previously covered under separate services agreements. Each amended contract incorporates a management fee rate that may vary by class. The Adviser or an affiliate pays certain expenses of managing and operating each fund out of each class’s management fee.
The following information replaces similar information for Fidelity Asset Manager® 40% found in the “Fund Summary” section under the “Fee Table” heading.
Annual Operating Expenses
(expenses that you pay each year as a % of the value of your investment)
Management fee
     0.50% A,B  
Distribution and/or Service (12b‑1) fees
     None  
Other expenses
     0.02% B  
    
 
 
Total annual operating expenses
     0.52%  
A The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.12% was previously charged under the services agreements.
B Adjusted to reflect current fees.
1 year
     $ 53  
3 years
     $ 167  
5 years
     $ 291  
10 years
     $ 653  
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Operating Expenses (expenses that you pay each year as a % of the value of your investment)
Expenses Restated to Reflect Current [Text] rr_ExpensesRestatedToReflectCurrent Adjusted to reflect current fees.
Fidelity Asset Manager 40% | Fidelity Asset Manager 40% | Fidelity Asset Manager 40%  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.50% [1],[10]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.02% [1]
Total annual operating expenses rr_ExpensesOverAssets 0.52%
1 year rr_ExpenseExampleYear01 $ 53
3 years rr_ExpenseExampleYear03 167
5 years rr_ExpenseExampleYear05 291
10 years rr_ExpenseExampleYear10 $ 653
Fidelity Asset Manager 50% | Fidelity Asset Manager 50%  
Risk/Return: rr_RiskReturnAbstract  
Supplement to Prospectus [Text Block] rr_SupplementToProspectusTextBlock
Supplement to the
Fidelity Asset Manager® Funds
Fidelity Asset Manager® 20%, Fidelity Asset Manager® 30%, Fidelity Asset Manager® 40%, Fidelity Asset Manager® 50%, Fidelity Asset Manager® 60%, Fidelity Asset Manager® 70%, and Fidelity Asset Manager® 85%
November 29, 2023
Prospectus
Effective March 1, 2024, each fund’s management contract was amended to incorporate administrative services previously covered under separate services agreements. Each amended contract incorporates a management fee rate that may vary by class. The Adviser or an affiliate pays certain expenses of managing and operating each fund out of each class’s management fee.
The following information replaces similar information for Fidelity Asset Manager® 50% found in the “Fund Summary” section under the “Fee Table” heading.
Annual Operating Expenses
(expenses that you pay each year as a % of the value of your investment)
Management fee
     0.55% A,B  
Distribution and/or Service (12b‑1) fees
     None  
Other expenses
     0.02% B  
    
 
 
Total annual operating expenses
     0.57%  
A The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.13% was previously charged under the services agreements.
B Adjusted to reflect current fees.
1 year
     $ 58  
3 years
     $ 183  
5 years
     $ 318  
10 years
     $ 714  
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Operating Expenses (expenses that you pay each year as a % of the value of your investment)
Expenses Restated to Reflect Current [Text] rr_ExpensesRestatedToReflectCurrent Adjusted to reflect current fees.
Fidelity Asset Manager 50% | Fidelity Asset Manager 50% | Fidelity Asset Manager 50%  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.55% [1],[11]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.02% [1]
Total annual operating expenses rr_ExpensesOverAssets 0.57%
1 year rr_ExpenseExampleYear01 $ 58
3 years rr_ExpenseExampleYear03 183
5 years rr_ExpenseExampleYear05 318
10 years rr_ExpenseExampleYear10 $ 714
Fidelity Asset Manager 60% | Fidelity Asset Manager 60%  
Risk/Return: rr_RiskReturnAbstract  
Supplement to Prospectus [Text Block] rr_SupplementToProspectusTextBlock
Supplement to the
Fidelity Asset Manager® Funds
Fidelity Asset Manager® 20%, Fidelity Asset Manager® 30%, Fidelity Asset Manager® 40%, Fidelity Asset Manager® 50%, Fidelity Asset Manager® 60%, Fidelity Asset Manager® 70%, and Fidelity Asset Manager® 85%
November 29, 2023
Prospectus
Effective March 1, 2024, each fund’s management contract was amended to incorporate administrative services previously covered under separate services agreements. Each amended contract incorporates a management fee rate that may vary by class. The Adviser or an affiliate pays certain expenses of managing and operating each fund out of each class’s management fee.
The following information replaces similar information for Fidelity Asset Manager® 60% found in the “Fund Summary” section under the “Fee Table” heading.
Annual Operating Expenses
(expenses that you pay each year as a % of the value of your investment)
Management fee
     0.64% A,B  
Distribution and/or Service (12b‑1) fees
     None  
Other expenses
     0.02% B  
    
 
 
Total annual operating expenses
     0.66%  
A The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.15% was previously charged under the services agreements.
B Adjusted to reflect current fees.
1 year
     $ 67  
3 years
     $ 211  
5 years
     $ 368  
10 years
     $ 822  
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Operating Expenses (expenses that you pay each year as a % of the value of your investment)
Expenses Restated to Reflect Current [Text] rr_ExpensesRestatedToReflectCurrent Adjusted to reflect current fees.
Fidelity Asset Manager 60% | Fidelity Asset Manager 60% | Fidelity Asset Manager 60%  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.64% [1],[12]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.02% [1]
Total annual operating expenses rr_ExpensesOverAssets 0.66%
1 year rr_ExpenseExampleYear01 $ 67
3 years rr_ExpenseExampleYear03 211
5 years rr_ExpenseExampleYear05 368
10 years rr_ExpenseExampleYear10 $ 822
Fidelity Asset Manager 70% | Fidelity Asset Manager 70%  
Risk/Return: rr_RiskReturnAbstract  
Supplement to Prospectus [Text Block] rr_SupplementToProspectusTextBlock
Supplement to the
Fidelity Asset Manager® Funds
Fidelity Asset Manager® 20%, Fidelity Asset Manager® 30%, Fidelity Asset Manager® 40%, Fidelity Asset Manager® 50%, Fidelity Asset Manager® 60%, Fidelity Asset Manager® 70%, and Fidelity Asset Manager® 85%
November 29, 2023
Prospectus
Effective March 1, 2024, each fund’s management contract was amended to incorporate administrative services previously covered under separate services agreements. Each amended contract incorporates a management fee rate that may vary by class. The Adviser or an affiliate pays certain expenses of managing and operating each fund out of each class’s management fee.
The following information replaces similar information for Fidelity Asset Manager® 70% found in the “Fund Summary” section under the “Fee Table” heading.
Annual Operating Expenses
(expenses that you pay each year as a % of the value of your investment)
Management fee
     0.64% A,B   
Distribution and/or Service (12b‑1) fees
     None  
Other expenses
     0.01% B  
    
 
 
Total annual operating expenses
     0.65%  
A The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.14% was previously charged under the services agreements.
B Adjusted to reflect current fees.
1 year
     $ 66  
3 years
     $ 208  
5 years
     $ 362  
10 years
     $ 810  
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Operating Expenses (expenses that you pay each year as a % of the value of your investment)
Expenses Restated to Reflect Current [Text] rr_ExpensesRestatedToReflectCurrent Adjusted to reflect current fees.
Fidelity Asset Manager 70% | Fidelity Asset Manager 70% | Fidelity Asset Manager 70%  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.64% [1],[13]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.01% [1]
Total annual operating expenses rr_ExpensesOverAssets 0.65%
1 year rr_ExpenseExampleYear01 $ 66
3 years rr_ExpenseExampleYear03 208
5 years rr_ExpenseExampleYear05 362
10 years rr_ExpenseExampleYear10 $ 810
Fidelity Asset Manager 85% | Fidelity Asset Manager 85%  
Risk/Return: rr_RiskReturnAbstract  
Supplement to Prospectus [Text Block] rr_SupplementToProspectusTextBlock
Supplement to the
Fidelity Asset Manager® Funds
Fidelity Asset Manager® 20%, Fidelity Asset Manager® 30%, Fidelity Asset Manager® 40%, Fidelity Asset Manager® 50%, Fidelity Asset Manager® 60%, Fidelity Asset Manager® 70%, and Fidelity Asset Manager® 85%
November 29, 2023
Prospectus
Effective March 1, 2024, each fund’s management contract was amended to incorporate administrative services previously covered under separate services agreements. Each amended contract incorporates a management fee rate that may vary by class. The Adviser or an affiliate pays certain expenses of managing and operating each fund out of each class’s management fee.
The following information replaces similar information for Fidelity Asset Manager® 85% found in the “Fund Summary” section under the “Fee Table” heading.
Annual Operating Expenses
(expenses that you pay each year as a % of the value of your investment)
Management fee
     0.65% A,B  
Distribution and/or Service (12b‑1) fees
     None  
Other expenses
     0.01% B  
Acquired fund fees and expenses
     0.01%  
    
 
 
Total annual operating expenses
     0.67%  
A The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.16% was previously charged under the services agreements.
B Adjusted to reflect current fees.
1 year
     $ 68  
3 years
     $ 214  
5 years
     $ 373  
10 years
     $ 835  
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Operating Expenses (expenses that you pay each year as a % of the value of your investment)
Expenses Restated to Reflect Current [Text] rr_ExpensesRestatedToReflectCurrent Adjusted to reflect current fees.
Fidelity Asset Manager 85% | Fidelity Asset Manager 85% | Fidelity Asset Manager 85%  
Risk/Return: rr_RiskReturnAbstract  
Management fee rr_ManagementFeesOverAssets 0.65% [1],[14]
Distribution and/or Service (12b-1) fees rr_DistributionAndService12b1FeesOverAssets none
Other expenses rr_OtherExpensesOverAssets 0.01% [1]
Acquired fund fees and expenses rr_AcquiredFundFeesAndExpensesOverAssets 0.01%
Total annual operating expenses rr_ExpensesOverAssets 0.67%
1 year rr_ExpenseExampleYear01 $ 68
3 years rr_ExpenseExampleYear03 214
5 years rr_ExpenseExampleYear05 373
10 years rr_ExpenseExampleYear10 $ 835
[1] Adjusted to reflect current fees.
[2] The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.17% for Class A, 0.16% for Class M, 0.16% for Class C, 0.14% for Class I, and 0.07% for Class Z was previously charged under the services agreements.
[3] The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.16% for Class A, 0.16% for Class M, 0.17% for Class C, 0.17% for Class I, and 0.08% for Class Z was previously charged under the services agreements.
[4] The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.17% for Class A, 0.16% for Class M, 0.18% for Class C, 0.16% for Class I, and 0.08% for Class Z was previously charged under the services agreements.
[5] The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.18% for Class A, 0.17% for Class M, 0.18% for Class C, 0.16% for Class I, and 0.06% for Class Z was previously charged under the services agreements.
[6] The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.21% for Class A, 0.20% for Class M, 0.22% for Class C, 0.21% for Class I, and 0.07% for Class Z was previously charged under the services agreements.
[7] The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.18% for Class A, 0.18% for Class M, 0.19% for Class C, 0.17% for Class I, and 0.06% for Class Z was previously charged under the services agreements.
[8] The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.19% for Class A, 0.19% for Class M, 0.20% for Class C, 0.18% for Class I, and 0.07% for Class Z was previously charged under the services agreements.
[9] The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.11% was previously charged under the services agreements.
[10] The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.12% was previously charged under the services agreements.
[11] The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.13% was previously charged under the services agreements.
[12] The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.15% was previously charged under the services agreements.
[13] The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.14% was previously charged under the services agreements.
[14] The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.16% was previously charged under the services agreements.