Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

Supplement to the

Fidelity^® Fund

August 29, 2023

Prospectus

Effective March 1, 2024, the fund’s management contract was amended to incorporate administrative services previously covered under separate services agreements. The amended contract incorporates a management fee rate that may vary by class. The Adviser or an affiliate pays certain expenses of managing and operating the fund out of each class’s management fee.

The following information replaces similar information 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	0.42% A,B
Distribution and/or Service (12b‑1) fees	None
Other expenses	0.00% B
Total annual operating expenses	0.42%

^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	$ 43
3 years	$ 135
5 years	$ 235
10 years	$ 530

Supplement to the

Fidelity^® Fund

Class K

August 29, 2023

Prospectus

Effective March 1, 2024, the fund’s management contract was amended to incorporate administrative services previously covered under separate services agreements. The amended contract incorporates a management fee rate that may vary by class. The Adviser or an affiliate pays certain expenses of managing and operating the fund out of each class’s management fee.

The following information replaces similar information 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	0.34% A,B
Distribution and/or Service (12b‑1) fees	None
Other expenses	0.00% B
Total annual operating expenses	0.34%

^A The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.06% was previously charged under the services agreements.

^B Adjusted to reflect current fees.

1 year	$ 35
3 years	$ 109
5 years	$ 191
10 years	$ 431

Supplement to the

Fidelity^® Growth Discovery Fund

August 29, 2023

Prospectus

Effective March 1, 2024, the fund’s management contract was amended to incorporate administrative services previously covered under separate services agreements. The amended contract incorporates a basic fee rate that may vary by class (subject to a performance adjustment). The Adviser or an affiliate pays certain expenses of managing and operating the fund out of each class’s management fee.

The following information replaces similar information 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 (fluctuates based on the fund’s performance relative to a securities market index)	0.65% A,B
Distribution and/or Service (12b‑1) fees	None
Other expenses	0.01% B
Total annual operating expenses	0.66%

^A The management fee comprises a basic fee, which may vary by class, that is adjusted up or down (subject to a maximum rate) based on the performance of the fund or a designated class of the fund relative to that of the Russell 3000^® Growth Index. The basic fee covers administrative services previously provided under separate services agreements with the fund, for which 0.17% was previously charged under the services agreements. Please see “Fund Services - Fund Management - Advisory Fee(s)” for additional information.

^B Adjusted to reflect current fees.

1 year	$ 67
3 years	$ 211
5 years	$ 368
10 years	$ 822

Supplement to the

Fidelity^® Growth Discovery Fund

Class K

August 29, 2023

Prospectus

Effective March 1, 2024, the fund’s management contract was amended to incorporate administrative services previously covered under separate services agreements. The amended contract incorporates a basic fee rate that may vary by class (subject to a performance adjustment). The Adviser or an affiliate pays certain expenses of managing and operating the fund out of each class’s management fee.

The following information replaces similar information 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 (fluctuates based on the fund’s performance relative to a securities market index)	0.56% A,B
Distribution and/or Service (12b‑1) fees	None
Other expenses	0.01% B
Total annual operating expenses	0.57%

^A The management fee comprises a basic fee, which may vary by class, that is adjusted up or down (subject to a maximum rate) based on the performance of the fund or a designated class of the fund relative to that of the Russell 3000^® Growth Index. The basic fee covers administrative services previously provided under separate services agreements with the fund, for which 0.07% was previously charged under the services agreements. Please see “Fund Services - Fund Management - Advisory Fee(s)” for additional information.

^B Adjusted to reflect current fees.

1 year	$ 58
3 years	$ 183
5 years	$ 318
10 years	$ 714

Supplement to the

Fidelity^® Mega Cap Stock Fund

August 29, 2023

Prospectus

Effective March 1, 2024, the fund’s management contract was amended to incorporate administrative services previously covered under separate services agreements. The amended contract incorporates a management fee rate that may vary by class. The Adviser or an affiliate pays certain expenses of managing and operating the fund out of each class’s management fee.

The following information replaces similar information 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	0.57% A,B
Distribution and/or Service (12b‑1) fees	None
Other expenses	0.02% B
Total annual operating expenses	0.59%

^A The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.18% was previously charged under the services agreements.

^B Adjusted to reflect current fees.

1 year	$ 60
3 years	$ 189
5 years	$ 329
10 years	$ 738

Supplement to the

Fidelity^® Mega Cap Stock Fund

Class A, Class M, Class C, Class I, and Class Z

August 29, 2023

Prospectus

Effective March 1, 2024, the fund’s management contract was amended to incorporate administrative services previously covered under separate services agreements. The amended contract incorporates a management fee rate that may vary by class. The Adviser or an affiliate pays certain expenses of managing and operating the fund out of each class’s management fee.

The following information replaces similar information 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	0.60% A,B	0.60% A,B	0.62% A,B	0.58% 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	0.87%	1.12%	1.64%	0.60%	0.48%

^A The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.20% for Class A, 0.21% for Class M, 0.23% for Class C, 0.18% 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	$ 659	$ 659	$ 460	$ 460	$ 267	$ 167	$ 61	$ 61	$ 49	$ 49
3 years	$ 837	$ 837	$ 694	$ 694	$ 517	$ 517	$ 192	$ 192	$ 154	$ 154
5 years	$ 1,029	$ 1,029	$ 945	$ 945	$ 892	$ 892	$ 335	$ 335	$ 269	$ 269
10 years	$ 1,586	$ 1,586	$ 1,665	$ 1,665	$ 1,738	$ 1,738	$ 750	$ 750	$ 604	$ 604

Fidelity Fund | Fidelity Fund

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

Supplement to the

Fidelity^® Fund

August 29, 2023

Prospectus

Effective March 1, 2024, the fund’s management contract was amended to incorporate administrative services previously covered under separate services agreements. The amended contract incorporates a management fee rate that may vary by class. The Adviser or an affiliate pays certain expenses of managing and operating the fund out of each class’s management fee.

The following information replaces similar information 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	0.42% A,B
Distribution and/or Service (12b‑1) fees	None
Other expenses	0.00% B
Total annual operating expenses	0.42%

^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	$ 43
3 years	$ 135
5 years	$ 235
10 years	$ 530

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 Fund | Fidelity Fund | Fidelity Fund

Risk/Return:

rr_RiskReturnAbstract

Management fee

rr_ManagementFeesOverAssets

0.42%

^[1],[2]

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

none

^[1]

Total annual operating expenses

rr_ExpensesOverAssets

0.42%

1 year

rr_ExpenseExampleYear01

$ 43

3 years

rr_ExpenseExampleYear03

135

5 years

rr_ExpenseExampleYear05

235

10 years

rr_ExpenseExampleYear10

$ 530

K | Fidelity Fund

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

Supplement to the

Fidelity^® Fund

Class K

August 29, 2023

Prospectus

Effective March 1, 2024, the fund’s management contract was amended to incorporate administrative services previously covered under separate services agreements. The amended contract incorporates a management fee rate that may vary by class. The Adviser or an affiliate pays certain expenses of managing and operating the fund out of each class’s management fee.

The following information replaces similar information 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	0.34% A,B
Distribution and/or Service (12b‑1) fees	None
Other expenses	0.00% B
Total annual operating expenses	0.34%

^A The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.06% was previously charged under the services agreements.

^B Adjusted to reflect current fees.

1 year	$ 35
3 years	$ 109
5 years	$ 191
10 years	$ 431

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.

K | Fidelity Fund | Class K

Risk/Return:

rr_RiskReturnAbstract

Management fee

rr_ManagementFeesOverAssets

0.34%

^[1],[3]

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

none

^[1]

Total annual operating expenses

rr_ExpensesOverAssets

0.34%

1 year

rr_ExpenseExampleYear01

$ 35

3 years

rr_ExpenseExampleYear03

109

5 years

rr_ExpenseExampleYear05

191

10 years

rr_ExpenseExampleYear10

$ 431

K | Fidelity Growth Discovery Fund

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

Supplement to the

Fidelity^® Growth Discovery Fund

Class K

August 29, 2023

Prospectus

Effective March 1, 2024, the fund’s management contract was amended to incorporate administrative services previously covered under separate services agreements. The amended contract incorporates a basic fee rate that may vary by class (subject to a performance adjustment). The Adviser or an affiliate pays certain expenses of managing and operating the fund out of each class’s management fee.

The following information replaces similar information 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 (fluctuates based on the fund’s performance relative to a securities market index)	0.56% A,B
Distribution and/or Service (12b‑1) fees	None
Other expenses	0.01% B
Total annual operating expenses	0.57%

^A The management fee comprises a basic fee, which may vary by class, that is adjusted up or down (subject to a maximum rate) based on the performance of the fund or a designated class of the fund relative to that of the Russell 3000^® Growth Index. The basic fee covers administrative services previously provided under separate services agreements with the fund, for which 0.07% was previously charged under the services agreements. Please see “Fund Services - Fund Management - Advisory Fee(s)” for additional information.

^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.

K | Fidelity Growth Discovery Fund | Class K

Risk/Return:

rr_RiskReturnAbstract

Management fee

rr_ManagementFeesOverAssets

0.56%

^[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

0.57%

1 year

rr_ExpenseExampleYear01

$ 58

3 years

rr_ExpenseExampleYear03

183

5 years

rr_ExpenseExampleYear05

318

10 years

rr_ExpenseExampleYear10

$ 714

Fidelity Growth Discovery Fund | Fidelity Growth Discovery Fund

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

Supplement to the

Fidelity^® Growth Discovery Fund

August 29, 2023

Prospectus

Effective March 1, 2024, the fund’s management contract was amended to incorporate administrative services previously covered under separate services agreements. The amended contract incorporates a basic fee rate that may vary by class (subject to a performance adjustment). The Adviser or an affiliate pays certain expenses of managing and operating the fund out of each class’s management fee.

The following information replaces similar information 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 (fluctuates based on the fund’s performance relative to a securities market index)	0.65% A,B
Distribution and/or Service (12b‑1) fees	None
Other expenses	0.01% B
Total annual operating expenses	0.66%

^A The management fee comprises a basic fee, which may vary by class, that is adjusted up or down (subject to a maximum rate) based on the performance of the fund or a designated class of the fund relative to that of the Russell 3000^® Growth Index. The basic fee covers administrative services previously provided under separate services agreements with the fund, for which 0.17% was previously charged under the services agreements. Please see “Fund Services - Fund Management - Advisory Fee(s)” for additional information.

^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 Growth Discovery Fund | Fidelity Growth Discovery Fund | Fidelity Growth Discovery Fund

Risk/Return:

rr_RiskReturnAbstract

Management fee

rr_ManagementFeesOverAssets

0.65%

^[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

0.66%

1 year

rr_ExpenseExampleYear01

$ 67

3 years

rr_ExpenseExampleYear03

211

5 years

rr_ExpenseExampleYear05

368

10 years

rr_ExpenseExampleYear10

$ 822

Fidelity Mega Cap Stock Fund | Fidelity Mega Cap Stock Fund

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

Supplement to the

Fidelity^® Mega Cap Stock Fund

August 29, 2023

Prospectus

Effective March 1, 2024, the fund’s management contract was amended to incorporate administrative services previously covered under separate services agreements. The amended contract incorporates a management fee rate that may vary by class. The Adviser or an affiliate pays certain expenses of managing and operating the fund out of each class’s management fee.

The following information replaces similar information 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	0.57% A,B
Distribution and/or Service (12b‑1) fees	None
Other expenses	0.02% B
Total annual operating expenses	0.59%

^A The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.18% was previously charged under the services agreements.

^B Adjusted to reflect current fees.

1 year	$ 60
3 years	$ 189
5 years	$ 329
10 years	$ 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.

Fidelity Mega Cap Stock Fund | Fidelity Mega Cap Stock Fund | Fidelity Mega Cap Stock Fund

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

A M C I Z | Fidelity Mega Cap Stock Fund

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

Supplement to the

Fidelity^® Mega Cap Stock Fund

Class A, Class M, Class C, Class I, and Class Z

August 29, 2023

Prospectus

Effective March 1, 2024, the fund’s management contract was amended to incorporate administrative services previously covered under separate services agreements. The amended contract incorporates a management fee rate that may vary by class. The Adviser or an affiliate pays certain expenses of managing and operating the fund out of each class’s management fee.

The following information replaces similar information 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	0.60% A,B	0.60% A,B	0.62% A,B	0.58% 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	0.87%	1.12%	1.64%	0.60%	0.48%

^A The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.20% for Class A, 0.21% for Class M, 0.23% for Class C, 0.18% 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	$ 659	$ 659	$ 460	$ 460	$ 267	$ 167	$ 61	$ 61	$ 49	$ 49
3 years	$ 837	$ 837	$ 694	$ 694	$ 517	$ 517	$ 192	$ 192	$ 154	$ 154
5 years	$ 1,029	$ 1,029	$ 945	$ 945	$ 892	$ 892	$ 335	$ 335	$ 269	$ 269
10 years	$ 1,586	$ 1,586	$ 1,665	$ 1,665	$ 1,738	$ 1,738	$ 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 Mega Cap Stock Fund | Fidelity Advisor Mega Cap Stock Fund: Class A

Risk/Return:

rr_RiskReturnAbstract

Management fee

rr_ManagementFeesOverAssets

0.60%

^[1],[7]

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

0.02%

^[1]

Total annual operating expenses

rr_ExpensesOverAssets

0.87%

1 year

rr_ExpenseExampleYear01

$ 659

3 years

rr_ExpenseExampleYear03

837

5 years

rr_ExpenseExampleYear05

1,029

10 years

rr_ExpenseExampleYear10

1,586

1 year

rr_ExpenseExampleNoRedemptionYear01

659

3 years

rr_ExpenseExampleNoRedemptionYear03

837

5 years

rr_ExpenseExampleNoRedemptionYear05

1,029

10 years

rr_ExpenseExampleNoRedemptionYear10

$ 1,586

A M C I Z | Fidelity Mega Cap Stock Fund | Fidelity Advisor Mega Cap Stock Fund: Class M

Risk/Return:

rr_RiskReturnAbstract

Management fee

rr_ManagementFeesOverAssets

0.60%

^[1],[7]

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.50%

Other expenses

rr_OtherExpensesOverAssets

0.02%

^[1]

Total annual operating expenses

rr_ExpensesOverAssets

1.12%

1 year

rr_ExpenseExampleYear01

$ 460

3 years

rr_ExpenseExampleYear03

694

5 years

rr_ExpenseExampleYear05

945

10 years

rr_ExpenseExampleYear10

1,665

1 year

rr_ExpenseExampleNoRedemptionYear01

460

3 years

rr_ExpenseExampleNoRedemptionYear03

694

5 years

rr_ExpenseExampleNoRedemptionYear05

945

10 years

rr_ExpenseExampleNoRedemptionYear10

$ 1,665

A M C I Z | Fidelity Mega Cap Stock Fund | Fidelity Advisor Mega Cap Stock Fund: Class C

Risk/Return:

rr_RiskReturnAbstract

Management fee

rr_ManagementFeesOverAssets

0.62%

^[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

1.64%

1 year

rr_ExpenseExampleYear01

$ 267

3 years

rr_ExpenseExampleYear03

517

5 years

rr_ExpenseExampleYear05

892

10 years

rr_ExpenseExampleYear10

1,738

1 year

rr_ExpenseExampleNoRedemptionYear01

167

3 years

rr_ExpenseExampleNoRedemptionYear03

517

5 years

rr_ExpenseExampleNoRedemptionYear05

892

10 years

rr_ExpenseExampleNoRedemptionYear10

$ 1,738

A M C I Z | Fidelity Mega Cap Stock Fund | Fidelity Advisor Mega Cap Stock Fund: Class I

Risk/Return:

rr_RiskReturnAbstract

Management fee

rr_ManagementFeesOverAssets

0.58%

^[1],[7]

Distribution and/or Service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.02%

^[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 Mega Cap Stock Fund | Fidelity Advisor Mega Cap Stock Fund: Class Z

Risk/Return:

rr_RiskReturnAbstract

Management fee

rr_ManagementFeesOverAssets

0.46%

^[1],[7]

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

[1] Adjusted to reflect current fees.

[2] The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.14% 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 0.06% was previously charged under the services agreements.

[4] The management fee comprises a basic fee, which may vary by class, that is adjusted up or down (subject to a maximum rate) based on the performance of the fund or a designated class of the fund relative to that of the Russell 3000^® Growth Index. The basic fee covers administrative services previously provided under separate services agreements with the fund, for which 0.07% was previously charged under the services agreements. Please see “Fund Services - Fund Management - Advisory Fee(s)” for additional information.

[5] The management fee comprises a basic fee, which may vary by class, that is adjusted up or down (subject to a maximum rate) based on the performance of the fund or a designated class of the fund relative to that of the Russell 3000^® Growth Index. The basic fee covers administrative services previously provided under separate services agreements with the fund, for which 0.17% was previously charged under the services agreements. Please see “Fund Services - Fund Management - Advisory Fee(s)” for additional information.

[6] The management fee covers administrative services previously provided under separate services agreements with the fund, for which 0.18% 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 0.20% for Class A, 0.21% for Class M, 0.23% for Class C, 0.18% for Class I, and 0.07% for Class Z was previously charged under the services agreements.