| Form N-CSR Cover | 12 Months Ended |
| Aug. 31, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | Fidelity Puritan Trust |
| Entity Central Index Key | 0000081205 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Aug. 31, 2024 |
| Shareholder Report | 12 Months Ended |
| Aug. 31, 2024 USD ($) shares | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | Fidelity Puritan Trust |
| Entity Central Index Key | 0000081205 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Aug. 31, 2024 |
| Fidelity Puritan Fund - Class K | |
| Shareholder Report [Line Items] | |
| Fund Name | Fidelity® Puritan® Fund |
| Class Name | Fidelity® Puritan® Fund Class K |
| Trading Symbol | FPUKX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains information about Fidelity® Puritan® Fund for the period September 1, 2023 to August 31, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com. |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Additional Information Phone Number | 1-800-835-5092 |
| Additional Information Email | fidfunddocuments@fidelity.com |
| Additional Information Website | fundresearch.fidelity.com/prospectus/sec |
| Expenses [Text Block] | What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class K $ 0.40 % |
| Expenses Paid, Amount | $ 44 |
| Expense Ratio, Percent | 0.40% |
| Factors Affecting Performance [Text Block] | What affected the Fund's performance this period? • • • • • • • • • |
| Performance Past Does Not Indicate Future [Text] | The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B26"><span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.</span> |
| Line Graph [Table Text Block] | How did the Fund perform over the past 10 years? CUMULATIVE PERFORMANCE August 31, 2014 through August 31, 2024. Initial investment of $10,000. Class K $10,000 $10,096 $10,851 $12,236 $14,002 $14,173 $17,287 $20,819 $18,271 $20,481 $24,822 Fidelity Puritan Composite Index℠ $10,000 $10,106 $11,125 $12,209 $13,557 $14,401 $16,734 $19,733 $17,549 $19,135 $22,758 S&P 500® Index $10,000 $10,048 $11,309 $13,145 $15,730 $16,189 $19,740 $25,893 $22,986 $26,650 $33,882 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURNS: 1 Year 5 Year 10 Year Class K 21.19% 11.86% 9.52% Fidelity Puritan Composite Index℠ 18.93% 9.58% 8.57% S&P 500® Index 27.14% 15.92% 12.98% Visit www.401k.com for more recent performance information. The Fund's past performance is not a good predictor of the Fund's future performance. The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. |
| Net Assets | $ 31,449,373,729 |
| Holdings Count | shares | 238 |
| Advisory Fees Paid, Amount | $ 118,821,735 |
| Investment Company Portfolio Turnover | 55% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of August 31, 2024) KEY FACTS Fund Size $ Number of Holdings 238 Total Advisory Fee $ Portfolio Turnover 55 % |
| Holdings [Text Block] | U.S. Government and U.S. Government Agency Obligations 17.8 AAA 2.6 AA 0.2 A 2.4 BBB 5.6 BB 1.5 B 1.4 CCC,CC,C 0.6 Not Rated 1.3 Equities 67.3 QUALITY DIVERSIFICATION (% of Fund's net assets) Short-Term Investments and Net Other Assets (Liabilities) - (0.7)% We have used ratings from Moody's Investors Service, Inc. Where Moody's® ratings are not available, we have used S&P® ratings. All ratings are as of the date indicated and do not reflect subsequent changes. MARKET SECTORS (% of Fund's net assets) Information Technology 18.5 Financials 10.4 Industrials 8.6 Health Care 8.4 Consumer Discretionary 6.7 Communication Services 4.9 Energy 3.4 Materials 3.0 Real Estate 1.7 Utilities 0.9 Consumer Staples 0.7 Common Stocks 66.8 Bonds 33.4 Preferred Stocks 0.4 Alternative Funds 0.1 Preferred Securities 0.0 ASSET ALLOCATION (% of Fund's net assets) Short-Term Investments and Net Other Assets (Liabilities) - (0.7)% |
| Largest Holdings [Text Block] | TOP HOLDINGS (% of Fund's net assets) US Treasury Notes 8.5 Apple Inc 5.3 Microsoft Corp 4.2 NVIDIA Corp 4.0 US Treasury Bonds 3.4 Amazon.com Inc 3.0 Meta Platforms Inc Class A 2.2 Fannie Mae Mortgage pass-thru certificates 2.0 Alphabet Inc Class C 1.9 Ginnie Mae II Pool 1.5 36.0 |
| Material Fund Change [Text Block] | How has the Fund changed? This is a summary of certain changes to the Fund since September 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by October 30, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-835-5092 or by sending an e-mail to fidfunddocuments fidelity.com . The fund added a contractual management fee waiver during the reporting period. The fund's transfer agent and pricing & bookkeeping fees were changed to a fixed rate effective December 1, 2023, through February 29, 2024, in anticipation of the transition to a new management fee structure. Effective March 1, 2024, the fund's management contract was amended to incorporate administrative services previously covered under separate services agreements (transfer agent and pricing & bookkeeping). 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. |
| Material Fund Change Expenses [Text Block] | The fund added a contractual management fee waiver during the reporting period. The fund's transfer agent and pricing & bookkeeping fees were changed to a fixed rate effective December 1, 2023, through February 29, 2024, in anticipation of the transition to a new management fee structure. Effective March 1, 2024, the fund's management contract was amended to incorporate administrative services previously covered under separate services agreements (transfer agent and pricing & bookkeeping). 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. |
| Summary of Change Legend [Text Block] | This is a summary of certain changes to the Fund since September 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by October 30, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-835-5092 or by sending an e-mail to fidfunddocuments fidelity.com . |
| Updated Prospectus Phone Number | 1-800-835-5092</span>" id="sjs-B40"><span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">1-800-835-5092</span> |
| Updated Prospectus Email Address | fidfunddocuments@fidelity.com</span>" id="sjs-B41"><span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">fidfunddocuments@fidelity.com</span> |
| Updated Prospectus Web Address | fundresearch.fidelity.com/prospectus/sec</span>" id="sjs-B42"><span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;">fundresearch.fidelity.com/prospectus/sec</span> |
| Fidelity Balanced Fund | |
| Shareholder Report [Line Items] | |
| Fund Name | Fidelity® Balanced Fund |
| Class Name | Fidelity® Balanced Fund |
| Trading Symbol | FBALX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains information about Fidelity® Balanced Fund for the period September 1, 2023 to August 31, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com. |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Additional Information Phone Number | 1-800-544-8544 |
| Additional Information Email | fidfunddocuments@fidelity.com |
| Additional Information Website | fundresearch.fidelity.com/prospectus/sec |
| Expenses [Text Block] | What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity® Balanced Fund $ 0.48 % |
| Expenses Paid, Amount | $ 53 |
| Expense Ratio, Percent | 0.48% |
| Factors Affecting Performance [Text Block] | What affected the Fund's performance this period? • • • • • • • |
| Performance Past Does Not Indicate Future [Text] | The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B59"><span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.</span> |
| Line Graph [Table Text Block] | How did the Fund perform over the past 10 years? CUMULATIVE PERFORMANCE August 31, 2014 through August 31, 2024. Initial investment of $10,000. Fidelity® Balanced Fund $10,000 $10,086 $10,866 $12,183 $13,740 $14,098 $17,121 $21,372 $18,637 $20,798 $24,928 Fidelity Balanced Hybrid Composite Index℠ $10,000 $10,106 $11,125 $12,209 $13,557 $14,401 $16,734 $19,733 $17,549 $19,135 $22,758 S&P 500® Index $10,000 $10,048 $11,309 $13,145 $15,730 $16,189 $19,740 $25,893 $22,986 $26,650 $33,882 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURNS: 1 Year 5 Year 10 Year Fidelity® Balanced Fund 19.85% 12.07% 9.56% Fidelity Balanced Hybrid Composite Index℠ 18.93% 9.58% 8.57% S&P 500® Index 27.14% 15.92% 12.98% Visit www.fidelity.com for more recent performance information. The Fund's past performance is not a good predictor of the Fund's future performance. The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. |
| Net Assets | $ 47,910,461,557 |
| Holdings Count | shares | 321 |
| Advisory Fees Paid, Amount | $ 178,180,848 |
| Investment Company Portfolio Turnover | 24% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of August 31, 2024) KEY FACTS Fund Size $ Number of Holdings 321 Total Advisory Fee $ Portfolio Turnover 24 % |
| Holdings [Text Block] | U.S. Government and U.S. Government Agency Obligations 21.3 AAA 3.2 AA 0.3 A 2.4 BBB 7.2 BB 0.8 B 0.3 Not Rated 1.4 Equities 63.8 QUALITY DIVERSIFICATION (% of Fund's net assets) Short-Term Investments and Net Other Assets (Liabilities) - (0.7)% We have used ratings from Moody's Investors Service, Inc. Where Moody's® ratings are not available, we have used S&P® ratings. All ratings are as of the date indicated and do not reflect subsequent changes. MARKET SECTORS (% of Fund's net assets) Information Technology 19.1 Financials 8.6 Health Care 8.1 Consumer Discretionary 6.2 Communication Services 5.8 Industrials 5.6 Consumer Staples 3.7 Energy 2.3 Utilities 1.6 Real Estate 1.5 Materials 1.3 Common Stocks 63.6 Bonds 36.9 Preferred Stocks 0.2 ASSET ALLOCATION (% of Fund's net assets) Short-Term Investments and Net Other Assets (Liabilities) - (0.7)% |
| Largest Holdings [Text Block] | TOP HOLDINGS (% of Fund's net assets) US Treasury Notes 10.1 Microsoft Corp 5.3 NVIDIA Corp 4.7 US Treasury Bonds 4.1 Apple Inc 3.3 Amazon.com Inc 2.8 Fannie Mae Mortgage pass-thru certificates 2.4 Meta Platforms Inc Class A 2.0 Alphabet Inc Class A 1.9 Ginnie Mae II Pool 1.8 38.4 |
| Material Fund Change [Text Block] | How has the Fund changed? This is a summary of certain changes to the Fund since September 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by October 30, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-544-8544 or by sending an e-mail to fidfunddocuments fidelity.com . Effective July 26, 2024, the fund's investment objective was modified and made to be a fundamental policy as revised. The fund's transfer agent and pricing & bookkeeping fees were changed to a fixed rate effective December 1, 2023, through February 29, 2024, in anticipation of the transition to a new management fee structure. Effective March 1, 2024, the fund's management contract was amended to incorporate administrative services previously covered under separate services agreements (transfer agent and pricing & bookkeeping). 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. |
| Material Fund Change Objectives [Text Block] | Effective July 26, 2024, the fund's investment objective was modified and made to be a fundamental policy as revised. |
| Material Fund Change Expenses [Text Block] | The fund's transfer agent and pricing & bookkeeping fees were changed to a fixed rate effective December 1, 2023, through February 29, 2024, in anticipation of the transition to a new management fee structure. Effective March 1, 2024, the fund's management contract was amended to incorporate administrative services previously covered under separate services agreements (transfer agent and pricing & bookkeeping). 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. |
| Summary of Change Legend [Text Block] | This is a summary of certain changes to the Fund since September 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by October 30, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-544-8544 or by sending an e-mail to fidfunddocuments fidelity.com . |
| Updated Prospectus Phone Number | 1-800-544-8544</span>" id="sjs-B74"><span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">1-800-544-8544</span> |
| Updated Prospectus Email Address | fidfunddocuments@fidelity.com</span>" id="sjs-B75"><span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">fidfunddocuments@fidelity.com</span> |
| Updated Prospectus Web Address | fundresearch.fidelity.com/prospectus/sec</span>" id="sjs-B76"><span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;">fundresearch.fidelity.com/prospectus/sec</span> |
| Fidelity Puritan Fund | |
| Shareholder Report [Line Items] | |
| Fund Name | Fidelity® Puritan® Fund |
| Class Name | Fidelity® Puritan® Fund |
| Trading Symbol | FPURX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains information about Fidelity® Puritan® Fund for the period September 1, 2023 to August 31, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com. |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Additional Information Phone Number | 1-800-544-8544 |
| Additional Information Email | fidfunddocuments@fidelity.com |
| Additional Information Website | fundresearch.fidelity.com/prospectus/sec |
| Expenses [Text Block] | What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity® Puritan® Fund $ 0.48 % |
| Expenses Paid, Amount | $ 53 |
| Expense Ratio, Percent | 0.48% |
| Factors Affecting Performance [Text Block] | What affected the Fund's performance this period? • • • • • • • • • |
| Performance Past Does Not Indicate Future [Text] | The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B93"><span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.</span> |
| Line Graph [Table Text Block] | How did the Fund perform over the past 10 years? CUMULATIVE PERFORMANCE August 31, 2014 through August 31, 2024. Initial investment of $10,000. Fidelity® Puritan® Fund $10,000 $10,087 $10,829 $12,197 $13,946 $14,109 $17,191 $20,685 $18,141 $20,317 $24,602 Fidelity Puritan Composite Index℠ $10,000 $10,106 $11,125 $12,209 $13,557 $14,401 $16,734 $19,733 $17,549 $19,135 $22,758 S&P 500® Index $10,000 $10,048 $11,309 $13,145 $15,730 $16,189 $19,740 $25,893 $22,986 $26,650 $33,882 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURNS: 1 Year 5 Year 10 Year Fidelity® Puritan® Fund 21.09% 11.76% 9.42% Fidelity Puritan Composite Index℠ 18.93% 9.58% 8.57% S&P 500® Index 27.14% 15.92% 12.98% Visit www.fidelity.com for more recent performance information. The Fund's past performance is not a good predictor of the Fund's future performance. The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. |
| Net Assets | $ 31,449,373,729 |
| Holdings Count | shares | 238 |
| Advisory Fees Paid, Amount | $ 118,821,735 |
| Investment Company Portfolio Turnover | 55% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of August 31, 2024) KEY FACTS Fund Size $ Number of Holdings 238 Total Advisory Fee $ Portfolio Turnover 55 % |
| Holdings [Text Block] | U.S. Government and U.S. Government Agency Obligations 17.8 AAA 2.6 AA 0.2 A 2.4 BBB 5.6 BB 1.5 B 1.4 CCC,CC,C 0.6 Not Rated 1.3 Equities 67.3 QUALITY DIVERSIFICATION (% of Fund's net assets) Short-Term Investments and Net Other Assets (Liabilities) - (0.7)% We have used ratings from Moody's Investors Service, Inc. Where Moody's® ratings are not available, we have used S&P® ratings. All ratings are as of the date indicated and do not reflect subsequent changes. MARKET SECTORS (% of Fund's net assets) Information Technology 18.5 Financials 10.4 Industrials 8.6 Health Care 8.4 Consumer Discretionary 6.7 Communication Services 4.9 Energy 3.4 Materials 3.0 Real Estate 1.7 Utilities 0.9 Consumer Staples 0.7 Common Stocks 66.8 Bonds 33.4 Preferred Stocks 0.4 Alternative Funds 0.1 Preferred Securities 0.0 ASSET ALLOCATION (% of Fund's net assets) Short-Term Investments and Net Other Assets (Liabilities) - (0.7)% |
| Largest Holdings [Text Block] | TOP HOLDINGS (% of Fund's net assets) US Treasury Notes 8.5 Apple Inc 5.3 Microsoft Corp 4.2 NVIDIA Corp 4.0 US Treasury Bonds 3.4 Amazon.com Inc 3.0 Meta Platforms Inc Class A 2.2 Fannie Mae Mortgage pass-thru certificates 2.0 Alphabet Inc Class C 1.9 Ginnie Mae II Pool 1.5 36.0 |
| Material Fund Change [Text Block] | How has the Fund changed? This is a summary of certain changes to the Fund since September 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by October 30, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-544-8544 or by sending an e-mail to fidfunddocuments fidelity.com . The fund added a contractual management fee waiver during the reporting period. The fund's transfer agent and pricing & bookkeeping fees were changed to a fixed rate effective December 1, 2023, through February 29, 2024, in anticipation of the transition to a new management fee structure. Effective March 1, 2024, the fund's management contract was amended to incorporate administrative services previously covered under separate services agreements (transfer agent and pricing & bookkeeping). 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. |
| Material Fund Change Expenses [Text Block] | The fund added a contractual management fee waiver during the reporting period. The fund's transfer agent and pricing & bookkeeping fees were changed to a fixed rate effective December 1, 2023, through February 29, 2024, in anticipation of the transition to a new management fee structure. Effective March 1, 2024, the fund's management contract was amended to incorporate administrative services previously covered under separate services agreements (transfer agent and pricing & bookkeeping). 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. |
| Summary of Change Legend [Text Block] | This is a summary of certain changes to the Fund since September 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by October 30, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-544-8544 or by sending an e-mail to fidfunddocuments fidelity.com . |
| Updated Prospectus Phone Number | 1-800-544-8544</span>" id="sjs-B107"><span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">1-800-544-8544</span> |
| Updated Prospectus Email Address | fidfunddocuments@fidelity.com</span>" id="sjs-B108"><span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">fidfunddocuments@fidelity.com</span> |
| Updated Prospectus Web Address | fundresearch.fidelity.com/prospectus/sec</span>" id="sjs-B109"><span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;">fundresearch.fidelity.com/prospectus/sec</span> |
| Fidelity Puritan K6 Fund | |
| Shareholder Report [Line Items] | |
| Fund Name | Fidelity® Puritan® K6 Fund |
| Class Name | Fidelity® Puritan® K6 Fund |
| Trading Symbol | FPKFX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains information about Fidelity® Puritan® K6 Fund for the period September 1, 2023 to August 31, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com. |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Additional Information Phone Number | 1-800-835-5092 |
| Additional Information Email | fidfunddocuments@fidelity.com |
| Additional Information Website | fundresearch.fidelity.com/prospectus/sec |
| Expenses [Text Block] | What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity® Puritan® K6 Fund $ 0.32 % |
| Expenses Paid, Amount | $ 35 |
| Expense Ratio, Percent | 0.32% |
| Factors Affecting Performance [Text Block] | What affected the Fund's performance this period? • • • • • • • • • |
| Performance Past Does Not Indicate Future [Text] | The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B126"><span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.</span> |
| Line Graph [Table Text Block] | How did the Fund perform over the life of Fund? CUMULATIVE PERFORMANCE June 14, 2019 through August 31, 2024. Initial investment of $10,000. Fidelity® Puritan® K6 Fund $10,000 $10,265 $12,518 $15,091 $13,227 $14,821 Fidelity Puritan Composite Index℠ $10,000 $10,258 $11,919 $14,056 $12,500 $13,630 S&P 500® Index $10,000 $10,176 $12,409 $16,276 $14,449 $16,752 2019 2020 2021 2022 2023 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURNS: 1 Year 5 Year Life of Fund A Fidelity® Puritan® K6 Fund 21.22% 11.85% 11.88% Fidelity Puritan Composite Index℠ 18.93% 9.58% 9.70% S&P 500® Index 27.14% 15.92% 15.59% A From June 14, 2019 Visit www.401k.com for more recent performance information. The Fund's past performance is not a good predictor of the Fund's future performance. The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. |
| Performance Inception Date | Jun. 14, 2019 |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. |
| Net Assets | $ 1,855,112,163 |
| Holdings Count | shares | 215 |
| Advisory Fees Paid, Amount | $ 5,049,529 |
| Investment Company Portfolio Turnover | 62% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of August 31, 2024) KEY FACTS Fund Size $ Number of Holdings 215 Total Advisory Fee $ Portfolio Turnover 62 % |
| Holdings [Text Block] | U.S. Government and U.S. Government Agency Obligations 17.7 AAA 2.6 AA 0.2 A 2.4 BBB 5.7 BB 1.5 B 1.3 CCC,CC,C 0.7 Not Rated 1.3 Equities 67.1 QUALITY DIVERSIFICATION (% of Fund's net assets) Short-Term Investments and Net Other Assets (Liabilities) - (0.5)% We have used ratings from Moody's Investors Service, Inc. Where Moody's® ratings are not available, we have used S&P® ratings. All ratings are as of the date indicated and do not reflect subsequent changes. MARKET SECTORS (% of Fund's net assets) Information Technology 18.5 Financials 10.2 Health Care 8.6 Industrials 8.4 Consumer Discretionary 6.5 Communication Services 4.9 Energy 3.5 Materials 3.1 Real Estate 1.7 Utilities 0.9 Consumer Staples 0.7 Common Stocks 67.0 Bonds 33.4 Alternative Funds 0.1 Preferred Securities 0.0 ASSET ALLOCATION (% of Fund's net assets) Short-Term Investments and Net Other Assets (Liabilities) - (0.5)% |
| Largest Holdings [Text Block] | TOP HOLDINGS (% of Fund's net assets) US Treasury Notes 8.4 Apple Inc 5.4 Microsoft Corp 4.3 NVIDIA Corp 3.9 US Treasury Bonds 3.4 Amazon.com Inc 3.0 Meta Platforms Inc Class A 2.3 Fannie Mae Mortgage pass-thru certificates 2.0 Alphabet Inc Class C 1.9 Ginnie Mae II Pool 1.5 36.1 |
| Material Fund Change [Text Block] | How has the Fund changed? This is a summary of certain changes to the Fund since September 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by October 30, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-835-5092 or by sending an e-mail to fidfunddocuments fidelity.com . The fund added a contractual management fee waiver during the reporting period. |
| Material Fund Change Expenses [Text Block] | The fund added a contractual management fee waiver during the reporting period. |
| Summary of Change Legend [Text Block] | This is a summary of certain changes to the Fund since September 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by October 30, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-835-5092 or by sending an e-mail to fidfunddocuments fidelity.com . |
| Updated Prospectus Phone Number | 1-800-835-5092</span>" id="sjs-B141"><span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">1-800-835-5092</span> |
| Updated Prospectus Email Address | fidfunddocuments@fidelity.com</span>" id="sjs-B142"><span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">fidfunddocuments@fidelity.com</span> |
| Updated Prospectus Web Address | fundresearch.fidelity.com/prospectus/sec</span>" id="sjs-B143"><span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;">fundresearch.fidelity.com/prospectus/sec</span> |
| Fidelity Balanced K6 Fund | |
| Shareholder Report [Line Items] | |
| Fund Name | Fidelity® Balanced K6 Fund |
| Class Name | Fidelity® Balanced K6 Fund |
| Trading Symbol | FBKFX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains information about Fidelity® Balanced K6 Fund for the period September 1, 2023 to August 31, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com. |
| Additional Information Phone Number | 1-800-835-5092 |
| Additional Information Email | fidfunddocuments@fidelity.com |
| Additional Information Website | fundresearch.fidelity.com/prospectus/sec |
| Expenses [Text Block] | What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Fidelity® Balanced K6 Fund $ 0.32 % |
| Expenses Paid, Amount | $ 35 |
| Expense Ratio, Percent | 0.32% |
| Factors Affecting Performance [Text Block] | What affected the Fund's performance this period? • • • • • • • |
| Performance Past Does Not Indicate Future [Text] | The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B159"><span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.</span> |
| Line Graph [Table Text Block] | How did the Fund perform over the life of Fund? CUMULATIVE PERFORMANCE June 14, 2019 through August 31, 2024. Initial investment of $10,000. Fidelity® Balanced K6 Fund $10,000 $10,235 $12,421 $15,544 $13,598 $15,241 Fidelity Balanced Hybrid Composite Index℠ $10,000 $10,258 $11,919 $14,056 $12,500 $13,630 S&P 500® Index $10,000 $10,176 $12,409 $16,276 $14,449 $16,752 2019 2020 2021 2022 2023 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURNS: 1 Year 5 Year Life of Fund A Fidelity® Balanced K6 Fund 20.11% 12.33% 12.28% Fidelity Balanced Hybrid Composite Index℠ 18.93% 9.58% 9.70% S&P 500® Index 27.14% 15.92% 15.59% A From June 14, 2019 Visit www.401k.com for more recent performance information. The Fund's past performance is not a good predictor of the Fund's future performance. The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. |
| Performance Inception Date | Jun. 14, 2019 |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. |
| Net Assets | $ 1,935,880,652 |
| Holdings Count | shares | 318 |
| Advisory Fees Paid, Amount | $ 5,656,548 |
| Investment Company Portfolio Turnover | 25% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of August 31, 2024) KEY FACTS Fund Size $ Number of Holdings 318 Total Advisory Fee $ Portfolio Turnover 25 % |
| Holdings [Text Block] | U.S. Government and U.S. Government Agency Obligations 21.3 AAA 3.2 AA 0.3 A 2.4 BBB 7.1 BB 0.8 B 0.3 CCC,CC,C 0.0 Not Rated 1.4 Equities 63.9 QUALITY DIVERSIFICATION (% of Fund's net assets) Short-Term Investments and Net Other Assets (Liabilities) - (0.7)% We have used ratings from Moody's Investors Service, Inc. Where Moody's® ratings are not available, we have used S&P® ratings. All ratings are as of the date indicated and do not reflect subsequent changes. MARKET SECTORS (% of Fund's net assets) Information Technology 19.4 Financials 8.7 Health Care 8.0 Consumer Discretionary 6.2 Communication Services 5.7 Industrials 5.6 Consumer Staples 3.7 Energy 2.3 Utilities 1.5 Real Estate 1.5 Materials 1.3 Common Stocks 63.8 Bonds 36.8 Preferred Stocks 0.1 Alternative Funds 0.0 Preferred Securities 0.0 ASSET ALLOCATION (% of Fund's net assets) Short-Term Investments and Net Other Assets (Liabilities) - (0.7)% |
| Largest Holdings [Text Block] | TOP HOLDINGS (% of Fund's net assets) US Treasury Notes 10.1 Microsoft Corp 5.4 NVIDIA Corp 4.8 US Treasury Bonds 4.1 Apple Inc 3.4 Amazon.com Inc 2.8 Fannie Mae Mortgage pass-thru certificates 2.4 Meta Platforms Inc Class A 2.0 Ginnie Mae II Pool 1.8 Alphabet Inc Class A 1.8 38.6 |
| Fidelity Balanced Fund - Class K | |
| Shareholder Report [Line Items] | |
| Fund Name | Fidelity® Balanced Fund |
| Class Name | Fidelity® Balanced Fund Class K |
| Trading Symbol | FBAKX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains information about Fidelity® Balanced Fund for the period September 1, 2023 to August 31, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-835-5092 or by sending an e-mail to fidfunddocuments@fidelity.com. |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Additional Information Phone Number | 1-800-835-5092 |
| Additional Information Email | fidfunddocuments@fidelity.com |
| Additional Information Website | fundresearch.fidelity.com/prospectus/sec |
| Expenses [Text Block] | What were your Fund costs for the last year? (based on hypothetical $10,000 investment) FUND COST (PREVIOUS YEAR) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class K $ 0.40 % |
| Expenses Paid, Amount | $ 44 |
| Expense Ratio, Percent | 0.40% |
| Factors Affecting Performance [Text Block] | What affected the Fund's performance this period? • • • • • • • |
| Performance Past Does Not Indicate Future [Text] | The Fund's past performance is not a good predictor of the Fund's future performance.</span>" id="sjs-B187"><span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">The Fund's past performance is not a good predictor of the Fund's future performance.</span> |
| Line Graph [Table Text Block] | How did the Fund perform over the past 10 years? CUMULATIVE PERFORMANCE August 31, 2014 through August 31, 2024. Initial investment of $10,000. Class K $10,000 $10,095 $10,886 $12,217 $13,790 $14,167 $17,211 $21,501 $18,764 $20,963 $25,134 Fidelity Balanced Hybrid Composite Index℠ $10,000 $10,106 $11,125 $12,209 $13,557 $14,401 $16,734 $19,733 $17,549 $19,135 $22,758 S&P 500® Index $10,000 $10,048 $11,309 $13,145 $15,730 $16,189 $19,740 $25,893 $22,986 $26,650 $33,882 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURNS: 1 Year 5 Year 10 Year Class K 19.90% 12.15% 9.65% Fidelity Balanced Hybrid Composite Index℠ 18.93% 9.58% 8.57% S&P 500® Index 27.14% 15.92% 12.98% Visit www.401k.com for more recent performance information. The Fund's past performance is not a good predictor of the Fund's future performance. The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. |
| Net Assets | $ 47,910,461,557 |
| Holdings Count | shares | 321 |
| Advisory Fees Paid, Amount | $ 178,180,848 |
| Investment Company Portfolio Turnover | 24% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics (as of August 31, 2024) KEY FACTS Fund Size $ Number of Holdings 321 Total Advisory Fee $ Portfolio Turnover 24 % |
| Holdings [Text Block] | U.S. Government and U.S. Government Agency Obligations 21.3 AAA 3.2 AA 0.3 A 2.4 BBB 7.2 BB 0.8 B 0.3 Not Rated 1.4 Equities 63.8 QUALITY DIVERSIFICATION (% of Fund's net assets) Short-Term Investments and Net Other Assets (Liabilities) - (0.7)% We have used ratings from Moody's Investors Service, Inc. Where Moody's® ratings are not available, we have used S&P® ratings. All ratings are as of the date indicated and do not reflect subsequent changes. MARKET SECTORS (% of Fund's net assets) Information Technology 19.1 Financials 8.6 Health Care 8.1 Consumer Discretionary 6.2 Communication Services 5.8 Industrials 5.6 Consumer Staples 3.7 Energy 2.3 Utilities 1.6 Real Estate 1.5 Materials 1.3 Common Stocks 63.6 Bonds 36.9 Preferred Stocks 0.2 ASSET ALLOCATION (% of Fund's net assets) Short-Term Investments and Net Other Assets (Liabilities) - (0.7)% |
| Largest Holdings [Text Block] | TOP HOLDINGS (% of Fund's net assets) US Treasury Notes 10.1 Microsoft Corp 5.3 NVIDIA Corp 4.7 US Treasury Bonds 4.1 Apple Inc 3.3 Amazon.com Inc 2.8 Fannie Mae Mortgage pass-thru certificates 2.4 Meta Platforms Inc Class A 2.0 Alphabet Inc Class A 1.9 Ginnie Mae II Pool 1.8 38.4 |
| Material Fund Change [Text Block] | How has the Fund changed? This is a summary of certain changes to the Fund since September 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by October 30, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-835-5092 or by sending an e-mail to fidfunddocuments fidelity.com . Effective July 26, 2024, the fund's investment objective was modified and made to be a fundamental policy as revised. The fund's transfer agent and pricing & bookkeeping fees were changed to a fixed rate effective December 1, 2023, through February 29, 2024, in anticipation of the transition to a new management fee structure. Effective March 1, 2024, the fund's management contract was amended to incorporate administrative services previously covered under separate services agreements (transfer agent and pricing & bookkeeping). 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. |
| Material Fund Change Objectives [Text Block] | Effective July 26, 2024, the fund's investment objective was modified and made to be a fundamental policy as revised. |
| Material Fund Change Expenses [Text Block] | The fund's transfer agent and pricing & bookkeeping fees were changed to a fixed rate effective December 1, 2023, through February 29, 2024, in anticipation of the transition to a new management fee structure. Effective March 1, 2024, the fund's management contract was amended to incorporate administrative services previously covered under separate services agreements (transfer agent and pricing & bookkeeping). 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. |
| Summary of Change Legend [Text Block] | This is a summary of certain changes to the Fund since September 1, 2023. For more complete information, you may review the Fund's next prospectus, which we expect to be available by October 30, 2024 at fundresearch.fidelity.com/prospectus/sec or upon request at 1-800-835-5092 or by sending an e-mail to fidfunddocuments fidelity.com . |
| Updated Prospectus Phone Number | 1-800-835-5092</span>" id="sjs-B202"><span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">1-800-835-5092</span> |
| Updated Prospectus Email Address | fidfunddocuments@fidelity.com</span>" id="sjs-B203"><span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;">fidfunddocuments@fidelity.com</span> |
| Updated Prospectus Web Address | fundresearch.fidelity.com/prospectus/sec</span>" id="sjs-B204"><span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;">fundresearch.fidelity.com/prospectus/sec</span> |
| Shareholder Report, Line Graph (Details) - USD ($) | 12 Months Ended | 60 Months Ended | 72 Months Ended | 120 Months Ended | 132 Months Ended | ||||||||||
| Aug. 31, 2024 | Aug. 31, 2024 | Aug. 31, 2024 | Aug. 31, 2024 | Aug. 31, 2024 | Aug. 31, 2023 | Aug. 31, 2022 | Aug. 31, 2021 | Aug. 31, 2020 | Aug. 31, 2019 | Aug. 31, 2018 | Aug. 31, 2017 | Aug. 31, 2016 | Aug. 31, 2015 | Aug. 31, 2014 | |
| C000064276_1_BBIndexMember_1YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 27.14% | ||||||||||||||
| C000064276_1_BBIndexMember_5YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 15.92% | ||||||||||||||
| C000064276_1_BBIndexMember_10YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 12.98% | ||||||||||||||
| C000019555_1_BBIndexMember_1YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 27.14% | ||||||||||||||
| C000019555_1_BBIndexMember_5YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 15.92% | ||||||||||||||
| C000019555_1_BBIndexMember_10YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 12.98% | ||||||||||||||
| C000019557_1_BBIndexMember_1YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 27.14% | ||||||||||||||
| C000019557_1_BBIndexMember_5YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 15.92% | ||||||||||||||
| C000019557_1_BBIndexMember_10YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 12.98% | ||||||||||||||
| C000212507_1_BBIndexMember_1YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 27.14% | ||||||||||||||
| C000212507_1_BBIndexMember_5YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 15.92% | ||||||||||||||
| C000212507_1_BBIndexMember_LOCMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 15.59% | ||||||||||||||
| C000212506_1_BBIndexMember_1YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 27.14% | ||||||||||||||
| C000212506_1_BBIndexMember_5YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 15.92% | ||||||||||||||
| C000212506_1_BBIndexMember_LOCMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 15.59% | ||||||||||||||
| C000064274_1_BBIndexMember_1YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 27.14% | ||||||||||||||
| C000064274_1_BBIndexMember_5YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 15.92% | ||||||||||||||
| C000064274_1_BBIndexMember_10YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 12.98% | ||||||||||||||
| C000064276_LG_ClassMember_11YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Line Graph and Table Measure Name | Class K</span>" id="sjs-F59"><span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Class K</span> | ||||||||||||||
| C000064276_ClassMember_AsOf_2014Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | $ 10,000 | ||||||||||||||
| C000064276_ClassMember_AsOf_2015Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | $ 10,096 | ||||||||||||||
| C000064276_ClassMember_AsOf_2016Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | $ 10,851 | ||||||||||||||
| C000064276_ClassMember_AsOf_2017Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | $ 12,236 | ||||||||||||||
| C000064276_ClassMember_AsOf_2018Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | $ 14,002 | ||||||||||||||
| C000064276_ClassMember_AsOf_2019Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | $ 14,173 | ||||||||||||||
| C000064276_ClassMember_AsOf_2020Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | $ 17,287 | ||||||||||||||
| C000064276_ClassMember_AsOf_2021Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | $ 20,819 | ||||||||||||||
| C000064276_ClassMember_AsOf_2022Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | $ 18,271 | ||||||||||||||
| C000064276_ClassMember_AsOf_2023Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | $ 20,481 | ||||||||||||||
| C000064276_ClassMember_AsOf_2024Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | $ 24,822 | $ 24,822 | $ 24,822 | $ 24,822 | $ 24,822 | ||||||||||
| C000064276_LG_1_AdditionalIndexMember_11YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Line Graph and Table Measure Name | Fidelity Puritan Composite Index℠</span>" id="sjs-F95"><span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Puritan Composite Index℠</span> | ||||||||||||||
| C000064276_1_AdditionalIndexMember_AsOf_2014Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 10,000 | ||||||||||||||
| C000064276_1_AdditionalIndexMember_AsOf_2015Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 10,106 | ||||||||||||||
| C000064276_1_AdditionalIndexMember_AsOf_2016Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 11,125 | ||||||||||||||
| C000064276_1_AdditionalIndexMember_AsOf_2017Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 12,209 | ||||||||||||||
| C000064276_1_AdditionalIndexMember_AsOf_2018Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 13,557 | ||||||||||||||
| C000064276_1_AdditionalIndexMember_AsOf_2019Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 14,401 | ||||||||||||||
| C000064276_1_AdditionalIndexMember_AsOf_2020Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 16,734 | ||||||||||||||
| C000064276_1_AdditionalIndexMember_AsOf_2021Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 19,733 | ||||||||||||||
| C000064276_1_AdditionalIndexMember_AsOf_2022Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 17,549 | ||||||||||||||
| C000064276_1_AdditionalIndexMember_AsOf_2023Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 19,135 | ||||||||||||||
| C000064276_1_AdditionalIndexMember_AsOf_2024Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 22,758 | 22,758 | 22,758 | 22,758 | $ 22,758 | ||||||||||
| C000064276_LG_2_AdditionalIndexMember_11YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Line Graph and Table Measure Name | S&P 500® Index</span>" id="sjs-F131"><span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">S&P 500® Index</span> | ||||||||||||||
| C000064276_2_AdditionalIndexMember_AsOf_2014Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 10,000 | ||||||||||||||
| C000064276_2_AdditionalIndexMember_AsOf_2015Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 10,048 | ||||||||||||||
| C000064276_2_AdditionalIndexMember_AsOf_2016Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 11,309 | ||||||||||||||
| C000064276_2_AdditionalIndexMember_AsOf_2017Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 13,145 | ||||||||||||||
| C000064276_2_AdditionalIndexMember_AsOf_2018Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 15,730 | ||||||||||||||
| C000064276_2_AdditionalIndexMember_AsOf_2019Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 16,189 | ||||||||||||||
| C000064276_2_AdditionalIndexMember_AsOf_2020Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 19,740 | ||||||||||||||
| C000064276_2_AdditionalIndexMember_AsOf_2021Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 25,893 | ||||||||||||||
| C000064276_2_AdditionalIndexMember_AsOf_2022Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 22,986 | ||||||||||||||
| C000064276_2_AdditionalIndexMember_AsOf_2023Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 26,650 | ||||||||||||||
| C000064276_2_AdditionalIndexMember_AsOf_2024Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | $ 33,882 | $ 33,882 | 33,882 | $ 33,882 | $ 33,882 | ||||||||||
| C000064276_NoLoadClassMember_1YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 21.19% | ||||||||||||||
| C000064276_NoLoadClassMember_5YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 11.86% | ||||||||||||||
| C000064276_NoLoadClassMember_10YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 9.52% | ||||||||||||||
| C000064276_0_AdditionalIndexMember_1YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 18.93% | ||||||||||||||
| C000064276_0_AdditionalIndexMember_5YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 9.58% | ||||||||||||||
| C000064276_0_AdditionalIndexMember_10YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 8.57% | ||||||||||||||
| C000019555_LG_ClassMember_11YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Line Graph and Table Measure Name | Fidelity® Balanced Fund</span>" id="sjs-F185"><span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity® Balanced Fund</span> | ||||||||||||||
| C000019555_ClassMember_AsOf_2014Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 10,000 | ||||||||||||||
| C000019555_ClassMember_AsOf_2015Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 10,086 | ||||||||||||||
| C000019555_ClassMember_AsOf_2016Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 10,866 | ||||||||||||||
| C000019555_ClassMember_AsOf_2017Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 12,183 | ||||||||||||||
| C000019555_ClassMember_AsOf_2018Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 13,740 | ||||||||||||||
| C000019555_ClassMember_AsOf_2019Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 14,098 | ||||||||||||||
| C000019555_ClassMember_AsOf_2020Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 17,121 | ||||||||||||||
| C000019555_ClassMember_AsOf_2021Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 21,372 | ||||||||||||||
| C000019555_ClassMember_AsOf_2022Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 18,637 | ||||||||||||||
| C000019555_ClassMember_AsOf_2023Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 20,798 | ||||||||||||||
| C000019555_ClassMember_AsOf_2024Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | $ 24,928 | $ 24,928 | 24,928 | $ 24,928 | $ 24,928 | ||||||||||
| C000019555_LG_1_AdditionalIndexMember_11YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Line Graph and Table Measure Name | Fidelity Balanced Hybrid Composite Index℠</span>" id="sjs-F221"><span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Balanced Hybrid Composite Index℠</span> | ||||||||||||||
| C000019555_1_AdditionalIndexMember_AsOf_2014Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 10,000 | ||||||||||||||
| C000019555_1_AdditionalIndexMember_AsOf_2015Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 10,106 | ||||||||||||||
| C000019555_1_AdditionalIndexMember_AsOf_2016Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 11,125 | ||||||||||||||
| C000019555_1_AdditionalIndexMember_AsOf_2017Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 12,209 | ||||||||||||||
| C000019555_1_AdditionalIndexMember_AsOf_2018Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 13,557 | ||||||||||||||
| C000019555_1_AdditionalIndexMember_AsOf_2019Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 14,401 | ||||||||||||||
| C000019555_1_AdditionalIndexMember_AsOf_2020Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 16,734 | ||||||||||||||
| C000019555_1_AdditionalIndexMember_AsOf_2021Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 19,733 | ||||||||||||||
| C000019555_1_AdditionalIndexMember_AsOf_2022Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 17,549 | ||||||||||||||
| C000019555_1_AdditionalIndexMember_AsOf_2023Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 19,135 | ||||||||||||||
| C000019555_1_AdditionalIndexMember_AsOf_2024Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 22,758 | 22,758 | 22,758 | 22,758 | $ 22,758 | ||||||||||
| C000019555_LG_2_AdditionalIndexMember_11YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Line Graph and Table Measure Name | S&P 500® Index</span>" id="sjs-F257"><span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">S&P 500® Index</span> | ||||||||||||||
| C000019555_2_AdditionalIndexMember_AsOf_2014Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 10,000 | ||||||||||||||
| C000019555_2_AdditionalIndexMember_AsOf_2015Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 10,048 | ||||||||||||||
| C000019555_2_AdditionalIndexMember_AsOf_2016Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 11,309 | ||||||||||||||
| C000019555_2_AdditionalIndexMember_AsOf_2017Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 13,145 | ||||||||||||||
| C000019555_2_AdditionalIndexMember_AsOf_2018Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 15,730 | ||||||||||||||
| C000019555_2_AdditionalIndexMember_AsOf_2019Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 16,189 | ||||||||||||||
| C000019555_2_AdditionalIndexMember_AsOf_2020Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 19,740 | ||||||||||||||
| C000019555_2_AdditionalIndexMember_AsOf_2021Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 25,893 | ||||||||||||||
| C000019555_2_AdditionalIndexMember_AsOf_2022Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 22,986 | ||||||||||||||
| C000019555_2_AdditionalIndexMember_AsOf_2023Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 26,650 | ||||||||||||||
| C000019555_2_AdditionalIndexMember_AsOf_2024Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | $ 33,882 | $ 33,882 | 33,882 | $ 33,882 | $ 33,882 | ||||||||||
| C000019555_NoLoadClassMember_1YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 19.85% | ||||||||||||||
| C000019555_NoLoadClassMember_5YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 12.07% | ||||||||||||||
| C000019555_NoLoadClassMember_10YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 9.56% | ||||||||||||||
| C000019555_0_AdditionalIndexMember_1YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 18.93% | ||||||||||||||
| C000019555_0_AdditionalIndexMember_5YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 9.58% | ||||||||||||||
| C000019555_0_AdditionalIndexMember_10YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 8.57% | ||||||||||||||
| C000019557_LG_ClassMember_11YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Line Graph and Table Measure Name | Fidelity® Puritan® Fund</span>" id="sjs-F311"><span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity® Puritan® Fund</span> | ||||||||||||||
| C000019557_ClassMember_AsOf_2014Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 10,000 | ||||||||||||||
| C000019557_ClassMember_AsOf_2015Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 10,087 | ||||||||||||||
| C000019557_ClassMember_AsOf_2016Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 10,829 | ||||||||||||||
| C000019557_ClassMember_AsOf_2017Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 12,197 | ||||||||||||||
| C000019557_ClassMember_AsOf_2018Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 13,946 | ||||||||||||||
| C000019557_ClassMember_AsOf_2019Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 14,109 | ||||||||||||||
| C000019557_ClassMember_AsOf_2020Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 17,191 | ||||||||||||||
| C000019557_ClassMember_AsOf_2021Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 20,685 | ||||||||||||||
| C000019557_ClassMember_AsOf_2022Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 18,141 | ||||||||||||||
| C000019557_ClassMember_AsOf_2023Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 20,317 | ||||||||||||||
| C000019557_ClassMember_AsOf_2024Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | $ 24,602 | $ 24,602 | 24,602 | $ 24,602 | $ 24,602 | ||||||||||
| C000019557_LG_1_AdditionalIndexMember_11YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Line Graph and Table Measure Name | Fidelity Puritan Composite Index℠</span>" id="sjs-F347"><span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Puritan Composite Index℠</span> | ||||||||||||||
| C000019557_1_AdditionalIndexMember_AsOf_2014Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 10,000 | ||||||||||||||
| C000019557_1_AdditionalIndexMember_AsOf_2015Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 10,106 | ||||||||||||||
| C000019557_1_AdditionalIndexMember_AsOf_2016Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 11,125 | ||||||||||||||
| C000019557_1_AdditionalIndexMember_AsOf_2017Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 12,209 | ||||||||||||||
| C000019557_1_AdditionalIndexMember_AsOf_2018Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 13,557 | ||||||||||||||
| C000019557_1_AdditionalIndexMember_AsOf_2019Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 14,401 | ||||||||||||||
| C000019557_1_AdditionalIndexMember_AsOf_2020Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 16,734 | ||||||||||||||
| C000019557_1_AdditionalIndexMember_AsOf_2021Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 19,733 | ||||||||||||||
| C000019557_1_AdditionalIndexMember_AsOf_2022Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 17,549 | ||||||||||||||
| C000019557_1_AdditionalIndexMember_AsOf_2023Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 19,135 | ||||||||||||||
| C000019557_1_AdditionalIndexMember_AsOf_2024Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 22,758 | 22,758 | 22,758 | 22,758 | $ 22,758 | ||||||||||
| C000019557_LG_2_AdditionalIndexMember_11YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Line Graph and Table Measure Name | S&P 500® Index</span>" id="sjs-F383"><span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">S&P 500® Index</span> | ||||||||||||||
| C000019557_2_AdditionalIndexMember_AsOf_2014Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 10,000 | ||||||||||||||
| C000019557_2_AdditionalIndexMember_AsOf_2015Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 10,048 | ||||||||||||||
| C000019557_2_AdditionalIndexMember_AsOf_2016Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 11,309 | ||||||||||||||
| C000019557_2_AdditionalIndexMember_AsOf_2017Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 13,145 | ||||||||||||||
| C000019557_2_AdditionalIndexMember_AsOf_2018Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 15,730 | ||||||||||||||
| C000019557_2_AdditionalIndexMember_AsOf_2019Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 16,189 | ||||||||||||||
| C000019557_2_AdditionalIndexMember_AsOf_2020Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 19,740 | ||||||||||||||
| C000019557_2_AdditionalIndexMember_AsOf_2021Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 25,893 | ||||||||||||||
| C000019557_2_AdditionalIndexMember_AsOf_2022Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 22,986 | ||||||||||||||
| C000019557_2_AdditionalIndexMember_AsOf_2023Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 26,650 | ||||||||||||||
| C000019557_2_AdditionalIndexMember_AsOf_2024Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | $ 33,882 | $ 33,882 | $ 33,882 | $ 33,882 | $ 33,882 | ||||||||||
| C000019557_NoLoadClassMember_1YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 21.09% | ||||||||||||||
| C000019557_NoLoadClassMember_5YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 11.76% | ||||||||||||||
| C000019557_NoLoadClassMember_10YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 9.42% | ||||||||||||||
| C000019557_0_AdditionalIndexMember_1YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 18.93% | ||||||||||||||
| C000019557_0_AdditionalIndexMember_5YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 9.58% | ||||||||||||||
| C000019557_0_AdditionalIndexMember_10YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 8.57% | ||||||||||||||
| C000212507_LG_ClassMember_6YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Line Graph and Table Measure Name | Fidelity® Puritan® K6 Fund</span>" id="sjs-D437"><span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity® Puritan® K6 Fund</span> | ||||||||||||||
| C000212507_ClassMember_AsOf_2019Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 10,000 | ||||||||||||||
| C000212507_ClassMember_AsOf_2020Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 10,265 | ||||||||||||||
| C000212507_ClassMember_AsOf_2021Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 12,518 | ||||||||||||||
| C000212507_ClassMember_AsOf_2022Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 15,091 | ||||||||||||||
| C000212507_ClassMember_AsOf_2023Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 13,227 | ||||||||||||||
| C000212507_ClassMember_AsOf_2024Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | $ 14,821 | $ 14,821 | $ 14,821 | $ 14,821 | 14,821 | ||||||||||
| C000212507_LG_1_AdditionalIndexMember_6YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Line Graph and Table Measure Name | Fidelity Puritan Composite Index℠</span>" id="sjs-D458"><span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Puritan Composite Index℠</span> | ||||||||||||||
| C000212507_1_AdditionalIndexMember_AsOf_2019Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 10,000 | ||||||||||||||
| C000212507_1_AdditionalIndexMember_AsOf_2020Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 10,258 | ||||||||||||||
| C000212507_1_AdditionalIndexMember_AsOf_2021Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 11,919 | ||||||||||||||
| C000212507_1_AdditionalIndexMember_AsOf_2022Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 14,056 | ||||||||||||||
| C000212507_1_AdditionalIndexMember_AsOf_2023Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 12,500 | ||||||||||||||
| C000212507_1_AdditionalIndexMember_AsOf_2024Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 13,630 | 13,630 | $ 13,630 | 13,630 | 13,630 | ||||||||||
| C000212507_LG_2_AdditionalIndexMember_6YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Line Graph and Table Measure Name | S&P 500® Index</span>" id="sjs-D479"><span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">S&P 500® Index</span> | ||||||||||||||
| C000212507_2_AdditionalIndexMember_AsOf_2019Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 10,000 | ||||||||||||||
| C000212507_2_AdditionalIndexMember_AsOf_2020Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 10,176 | ||||||||||||||
| C000212507_2_AdditionalIndexMember_AsOf_2021Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 12,409 | ||||||||||||||
| C000212507_2_AdditionalIndexMember_AsOf_2022Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 16,276 | ||||||||||||||
| C000212507_2_AdditionalIndexMember_AsOf_2023Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 14,449 | ||||||||||||||
| C000212507_2_AdditionalIndexMember_AsOf_2024Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | $ 16,752 | $ 16,752 | $ 16,752 | 16,752 | 16,752 | ||||||||||
| C000212507_NoLoadClassMember_1YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 21.22% | ||||||||||||||
| C000212507_NoLoadClassMember_5YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 11.85% | ||||||||||||||
| C000212507_NoLoadClassMember_2023-09-01_2024-08-31Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 11.88% | ||||||||||||||
| C000212507_0_AdditionalIndexMember_1YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 18.93% | ||||||||||||||
| C000212507_0_AdditionalIndexMember_5YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 9.58% | ||||||||||||||
| C000212507_0_AdditionalIndexMember_LOCMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 9.70% | ||||||||||||||
| C000212506_LG_ClassMember_6YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Line Graph and Table Measure Name | Fidelity® Balanced K6 Fund</span>" id="sjs-D518"><span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity® Balanced K6 Fund</span> | ||||||||||||||
| C000212506_ClassMember_AsOf_2019Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 10,000 | ||||||||||||||
| C000212506_ClassMember_AsOf_2020Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 10,235 | ||||||||||||||
| C000212506_ClassMember_AsOf_2021Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 12,421 | ||||||||||||||
| C000212506_ClassMember_AsOf_2022Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 15,544 | ||||||||||||||
| C000212506_ClassMember_AsOf_2023Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 13,598 | ||||||||||||||
| C000212506_ClassMember_AsOf_2024Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | $ 15,241 | $ 15,241 | $ 15,241 | 15,241 | 15,241 | ||||||||||
| C000212506_LG_1_AdditionalIndexMember_6YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Line Graph and Table Measure Name | Fidelity Balanced Hybrid Composite Index℠</span>" id="sjs-D539"><span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Balanced Hybrid Composite Index℠</span> | ||||||||||||||
| C000212506_1_AdditionalIndexMember_AsOf_2019Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 10,000 | ||||||||||||||
| C000212506_1_AdditionalIndexMember_AsOf_2020Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 10,258 | ||||||||||||||
| C000212506_1_AdditionalIndexMember_AsOf_2021Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 11,919 | ||||||||||||||
| C000212506_1_AdditionalIndexMember_AsOf_2022Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 14,056 | ||||||||||||||
| C000212506_1_AdditionalIndexMember_AsOf_2023Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 12,500 | ||||||||||||||
| C000212506_1_AdditionalIndexMember_AsOf_2024Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 13,630 | 13,630 | $ 13,630 | 13,630 | 13,630 | ||||||||||
| C000212506_LG_2_AdditionalIndexMember_6YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Line Graph and Table Measure Name | S&P 500® Index</span>" id="sjs-D560"><span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">S&P 500® Index</span> | ||||||||||||||
| C000212506_2_AdditionalIndexMember_AsOf_2019Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 10,000 | ||||||||||||||
| C000212506_2_AdditionalIndexMember_AsOf_2020Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 10,176 | ||||||||||||||
| C000212506_2_AdditionalIndexMember_AsOf_2021Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 12,409 | ||||||||||||||
| C000212506_2_AdditionalIndexMember_AsOf_2022Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 16,276 | ||||||||||||||
| C000212506_2_AdditionalIndexMember_AsOf_2023Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 14,449 | ||||||||||||||
| C000212506_2_AdditionalIndexMember_AsOf_2024Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | $ 16,752 | $ 16,752 | $ 16,752 | 16,752 | $ 16,752 | ||||||||||
| C000212506_NoLoadClassMember_1YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 20.11% | ||||||||||||||
| C000212506_NoLoadClassMember_5YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 12.33% | ||||||||||||||
| C000212506_NoLoadClassMember_2023-09-01_2024-08-31Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 12.28% | ||||||||||||||
| C000212506_0_AdditionalIndexMember_1YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 18.93% | ||||||||||||||
| C000212506_0_AdditionalIndexMember_5YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 9.58% | ||||||||||||||
| C000212506_0_AdditionalIndexMember_LOCMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 9.70% | ||||||||||||||
| C000064274_LG_ClassMember_11YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Line Graph and Table Measure Name | Class K</span>" id="sjs-F599"><span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Class K</span> | ||||||||||||||
| C000064274_ClassMember_AsOf_2014Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 10,000 | ||||||||||||||
| C000064274_ClassMember_AsOf_2015Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 10,095 | ||||||||||||||
| C000064274_ClassMember_AsOf_2016Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 10,886 | ||||||||||||||
| C000064274_ClassMember_AsOf_2017Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 12,217 | ||||||||||||||
| C000064274_ClassMember_AsOf_2018Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 13,790 | ||||||||||||||
| C000064274_ClassMember_AsOf_2019Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 14,167 | ||||||||||||||
| C000064274_ClassMember_AsOf_2020Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 17,211 | ||||||||||||||
| C000064274_ClassMember_AsOf_2021Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 21,501 | ||||||||||||||
| C000064274_ClassMember_AsOf_2022Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 18,764 | ||||||||||||||
| C000064274_ClassMember_AsOf_2023Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 20,963 | ||||||||||||||
| C000064274_ClassMember_AsOf_2024Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | $ 25,134 | $ 25,134 | 25,134 | 25,134 | $ 25,134 | ||||||||||
| C000064274_LG_1_AdditionalIndexMember_11YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Line Graph and Table Measure Name | Fidelity Balanced Hybrid Composite Index℠</span>" id="sjs-F635"><span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Balanced Hybrid Composite Index℠</span> | ||||||||||||||
| C000064274_1_AdditionalIndexMember_AsOf_2014Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 10,000 | ||||||||||||||
| C000064274_1_AdditionalIndexMember_AsOf_2015Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 10,106 | ||||||||||||||
| C000064274_1_AdditionalIndexMember_AsOf_2016Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 11,125 | ||||||||||||||
| C000064274_1_AdditionalIndexMember_AsOf_2017Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 12,209 | ||||||||||||||
| C000064274_1_AdditionalIndexMember_AsOf_2018Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 13,557 | ||||||||||||||
| C000064274_1_AdditionalIndexMember_AsOf_2019Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 14,401 | ||||||||||||||
| C000064274_1_AdditionalIndexMember_AsOf_2020Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 16,734 | ||||||||||||||
| C000064274_1_AdditionalIndexMember_AsOf_2021Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 19,733 | ||||||||||||||
| C000064274_1_AdditionalIndexMember_AsOf_2022Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 17,549 | ||||||||||||||
| C000064274_1_AdditionalIndexMember_AsOf_2023Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 19,135 | ||||||||||||||
| C000064274_1_AdditionalIndexMember_AsOf_2024Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | 22,758 | 22,758 | 22,758 | 22,758 | $ 22,758 | ||||||||||
| C000064274_LG_2_AdditionalIndexMember_11YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Line Graph and Table Measure Name | S&P 500® Index</span>" id="sjs-F671"><span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">S&P 500® Index</span> | ||||||||||||||
| C000064274_2_AdditionalIndexMember_AsOf_2014Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | $ 10,000 | ||||||||||||||
| C000064274_2_AdditionalIndexMember_AsOf_2015Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | $ 10,048 | ||||||||||||||
| C000064274_2_AdditionalIndexMember_AsOf_2016Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | $ 11,309 | ||||||||||||||
| C000064274_2_AdditionalIndexMember_AsOf_2017Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | $ 13,145 | ||||||||||||||
| C000064274_2_AdditionalIndexMember_AsOf_2018Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | $ 15,730 | ||||||||||||||
| C000064274_2_AdditionalIndexMember_AsOf_2019Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | $ 16,189 | ||||||||||||||
| C000064274_2_AdditionalIndexMember_AsOf_2020Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | $ 19,740 | ||||||||||||||
| C000064274_2_AdditionalIndexMember_AsOf_2021Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | $ 25,893 | ||||||||||||||
| C000064274_2_AdditionalIndexMember_AsOf_2022Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | $ 22,986 | ||||||||||||||
| C000064274_2_AdditionalIndexMember_AsOf_2023Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | $ 26,650 | ||||||||||||||
| C000064274_2_AdditionalIndexMember_AsOf_2024Member | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Account Value | $ 33,882 | $ 33,882 | $ 33,882 | $ 33,882 | $ 33,882 | ||||||||||
| C000064274_NoLoadClassMember_1YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 19.90% | ||||||||||||||
| C000064274_NoLoadClassMember_5YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 12.15% | ||||||||||||||
| C000064274_NoLoadClassMember_10YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 9.65% | ||||||||||||||
| C000064274_0_AdditionalIndexMember_1YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 18.93% | ||||||||||||||
| C000064274_0_AdditionalIndexMember_5YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 9.58% | ||||||||||||||
| C000064274_0_AdditionalIndexMember_10YRMember | |||||||||||||||
| Account Value [Line Items] | |||||||||||||||
| Average Annual Return, Percent | 8.57% |
| Shareholder Report, Holdings (Details) | Aug. 31, 2024 |
| Fidelity Puritan Fund - Class K | TH0Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.50% |
| Fidelity Puritan Fund - Class K | TH1Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.30% |
| Fidelity Puritan Fund - Class K | TH2Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.20% |
| Fidelity Puritan Fund - Class K | TH3Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4% |
| Fidelity Puritan Fund - Class K | TH4Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| Fidelity Puritan Fund - Class K | TH5Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| Fidelity Puritan Fund - Class K | TH6Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| Fidelity Puritan Fund - Class K | TH7Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| Fidelity Puritan Fund - Class K | TH8Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| Fidelity Puritan Fund - Class K | TH9Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| Fidelity Puritan Fund - Class K | QDUSGovernmentandUSGovernmentAgencyObligationsMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.80% |
| Fidelity Puritan Fund - Class K | QDAAAMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| Fidelity Puritan Fund - Class K | QDAAMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| Fidelity Puritan Fund - Class K | QDAMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| Fidelity Puritan Fund - Class K | QDBBBMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.60% |
| Fidelity Puritan Fund - Class K | QDBBMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| Fidelity Puritan Fund - Class K | QDBMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| Fidelity Puritan Fund - Class K | QDCCCCCCMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| Fidelity Puritan Fund - Class K | QDNotRatedMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| Fidelity Puritan Fund - Class K | QDEquitiesMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 67.30% |
| Fidelity Puritan Fund - Class K | MSFinancialsSectorMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.40% |
| Fidelity Puritan Fund - Class K | Information Technology Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18.50% |
| Fidelity Puritan Fund - Class K | Healthcare Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.40% |
| Fidelity Puritan Fund - Class K | Real Estate Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| Fidelity Puritan Fund - Class K | Industrial Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.60% |
| Fidelity Puritan Fund - Class K | Materials Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| Fidelity Puritan Fund - Class K | Consumer Discretionary Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.70% |
| Fidelity Puritan Fund - Class K | Consumer Staples Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Fidelity Puritan Fund - Class K | Communications Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| Fidelity Puritan Fund - Class K | Energy Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| Fidelity Puritan Fund - Class K | Utilities Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| Fidelity Puritan Fund - Class K | AACommonStocksMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 66.80% |
| Fidelity Puritan Fund - Class K | AABondsMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 33.40% |
| Fidelity Puritan Fund - Class K | AAPreferredStocksMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.40% |
| Fidelity Puritan Fund - Class K | AAAlternativeFundsMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| Fidelity Puritan Fund - Class K | AAPreferredSecuritiesMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| Fidelity Balanced Fund | TH0Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.10% |
| Fidelity Balanced Fund | TH1Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.30% |
| Fidelity Balanced Fund | TH2Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| Fidelity Balanced Fund | TH3Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| Fidelity Balanced Fund | TH4Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| Fidelity Balanced Fund | TH5Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| Fidelity Balanced Fund | TH6Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| Fidelity Balanced Fund | TH7Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| Fidelity Balanced Fund | TH8Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| Fidelity Balanced Fund | TH9Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| Fidelity Balanced Fund | QDUSGovernmentandUSGovernmentAgencyObligationsMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.30% |
| Fidelity Balanced Fund | QDAAAMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| Fidelity Balanced Fund | QDAAMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| Fidelity Balanced Fund | QDAMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| Fidelity Balanced Fund | QDBBBMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.20% |
| Fidelity Balanced Fund | QDBBMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| Fidelity Balanced Fund | QDBMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| Fidelity Balanced Fund | QDNotRatedMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| Fidelity Balanced Fund | QDEquitiesMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 63.80% |
| Fidelity Balanced Fund | MSFinancialsSectorMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.60% |
| Fidelity Balanced Fund | Information Technology Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 19.10% |
| Fidelity Balanced Fund | Healthcare Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.10% |
| Fidelity Balanced Fund | Real Estate Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| Fidelity Balanced Fund | Industrial Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.60% |
| Fidelity Balanced Fund | Materials Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| Fidelity Balanced Fund | Consumer Discretionary Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.20% |
| Fidelity Balanced Fund | Consumer Staples Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.70% |
| Fidelity Balanced Fund | Communications Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.80% |
| Fidelity Balanced Fund | Energy Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| Fidelity Balanced Fund | Utilities Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| Fidelity Balanced Fund | AACommonStocksMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 63.60% |
| Fidelity Balanced Fund | AABondsMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 36.90% |
| Fidelity Balanced Fund | AAPreferredStocksMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| Fidelity Puritan Fund | TH0Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.50% |
| Fidelity Puritan Fund | TH1Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.30% |
| Fidelity Puritan Fund | TH2Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.20% |
| Fidelity Puritan Fund | TH3Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4% |
| Fidelity Puritan Fund | TH4Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| Fidelity Puritan Fund | TH5Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| Fidelity Puritan Fund | TH6Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| Fidelity Puritan Fund | TH7Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| Fidelity Puritan Fund | TH8Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| Fidelity Puritan Fund | TH9Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| Fidelity Puritan Fund | QDUSGovernmentandUSGovernmentAgencyObligationsMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.80% |
| Fidelity Puritan Fund | QDAAAMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| Fidelity Puritan Fund | QDAAMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| Fidelity Puritan Fund | QDAMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| Fidelity Puritan Fund | QDBBBMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.60% |
| Fidelity Puritan Fund | QDBBMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| Fidelity Puritan Fund | QDBMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| Fidelity Puritan Fund | QDCCCCCCMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| Fidelity Puritan Fund | QDNotRatedMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| Fidelity Puritan Fund | QDEquitiesMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 67.30% |
| Fidelity Puritan Fund | MSFinancialsSectorMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.40% |
| Fidelity Puritan Fund | Information Technology Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18.50% |
| Fidelity Puritan Fund | Healthcare Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.40% |
| Fidelity Puritan Fund | Real Estate Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| Fidelity Puritan Fund | Industrial Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.60% |
| Fidelity Puritan Fund | Materials Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| Fidelity Puritan Fund | Consumer Discretionary Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.70% |
| Fidelity Puritan Fund | Consumer Staples Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Fidelity Puritan Fund | Communications Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| Fidelity Puritan Fund | Energy Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| Fidelity Puritan Fund | Utilities Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| Fidelity Puritan Fund | AACommonStocksMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 66.80% |
| Fidelity Puritan Fund | AABondsMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 33.40% |
| Fidelity Puritan Fund | AAPreferredStocksMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.40% |
| Fidelity Puritan Fund | AAAlternativeFundsMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| Fidelity Puritan Fund | AAPreferredSecuritiesMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| Fidelity Puritan K6 Fund | TH0Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.40% |
| Fidelity Puritan K6 Fund | TH1Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| Fidelity Puritan K6 Fund | TH2Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| Fidelity Puritan K6 Fund | TH3Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| Fidelity Puritan K6 Fund | TH4Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| Fidelity Puritan K6 Fund | TH5Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| Fidelity Puritan K6 Fund | TH6Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| Fidelity Puritan K6 Fund | TH7Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| Fidelity Puritan K6 Fund | TH8Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| Fidelity Puritan K6 Fund | TH9Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| Fidelity Puritan K6 Fund | QDUSGovernmentandUSGovernmentAgencyObligationsMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.70% |
| Fidelity Puritan K6 Fund | QDAAAMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| Fidelity Puritan K6 Fund | QDAAMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| Fidelity Puritan K6 Fund | QDAMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| Fidelity Puritan K6 Fund | QDBBBMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.70% |
| Fidelity Puritan K6 Fund | QDBBMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| Fidelity Puritan K6 Fund | QDBMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| Fidelity Puritan K6 Fund | QDCCCCCCMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Fidelity Puritan K6 Fund | QDNotRatedMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| Fidelity Puritan K6 Fund | QDEquitiesMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 67.10% |
| Fidelity Puritan K6 Fund | MSFinancialsSectorMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.20% |
| Fidelity Puritan K6 Fund | Information Technology Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18.50% |
| Fidelity Puritan K6 Fund | Healthcare Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.60% |
| Fidelity Puritan K6 Fund | Real Estate Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| Fidelity Puritan K6 Fund | Industrial Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.40% |
| Fidelity Puritan K6 Fund | Materials Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| Fidelity Puritan K6 Fund | Consumer Discretionary Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.50% |
| Fidelity Puritan K6 Fund | Consumer Staples Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| Fidelity Puritan K6 Fund | Communications Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| Fidelity Puritan K6 Fund | Energy Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| Fidelity Puritan K6 Fund | Utilities Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| Fidelity Puritan K6 Fund | AACommonStocksMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 67% |
| Fidelity Puritan K6 Fund | AABondsMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 33.40% |
| Fidelity Puritan K6 Fund | AAAlternativeFundsMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| Fidelity Puritan K6 Fund | AAPreferredSecuritiesMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| Fidelity Balanced K6 Fund | TH0Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.10% |
| Fidelity Balanced K6 Fund | TH1Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| Fidelity Balanced K6 Fund | TH2Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.80% |
| Fidelity Balanced K6 Fund | TH3Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| Fidelity Balanced K6 Fund | TH4Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| Fidelity Balanced K6 Fund | TH5Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| Fidelity Balanced K6 Fund | TH6Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| Fidelity Balanced K6 Fund | TH7Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| Fidelity Balanced K6 Fund | TH8Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| Fidelity Balanced K6 Fund | TH9Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| Fidelity Balanced K6 Fund | QDUSGovernmentandUSGovernmentAgencyObligationsMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.30% |
| Fidelity Balanced K6 Fund | QDAAAMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| Fidelity Balanced K6 Fund | QDAAMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| Fidelity Balanced K6 Fund | QDAMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| Fidelity Balanced K6 Fund | QDBBBMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.10% |
| Fidelity Balanced K6 Fund | QDBBMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| Fidelity Balanced K6 Fund | QDBMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| Fidelity Balanced K6 Fund | QDCCCCCCMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| Fidelity Balanced K6 Fund | QDNotRatedMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| Fidelity Balanced K6 Fund | QDEquitiesMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 63.90% |
| Fidelity Balanced K6 Fund | MSFinancialsSectorMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.70% |
| Fidelity Balanced K6 Fund | Information Technology Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 19.40% |
| Fidelity Balanced K6 Fund | Healthcare Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8% |
| Fidelity Balanced K6 Fund | Real Estate Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| Fidelity Balanced K6 Fund | Industrial Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.60% |
| Fidelity Balanced K6 Fund | Materials Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| Fidelity Balanced K6 Fund | Consumer Discretionary Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.20% |
| Fidelity Balanced K6 Fund | Consumer Staples Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.70% |
| Fidelity Balanced K6 Fund | Communications Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.70% |
| Fidelity Balanced K6 Fund | Energy Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| Fidelity Balanced K6 Fund | Utilities Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| Fidelity Balanced K6 Fund | AACommonStocksMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 63.80% |
| Fidelity Balanced K6 Fund | AABondsMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 36.80% |
| Fidelity Balanced K6 Fund | AAPreferredStocksMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| Fidelity Balanced K6 Fund | AAAlternativeFundsMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| Fidelity Balanced K6 Fund | AAPreferredSecuritiesMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| Fidelity Balanced Fund - Class K | TH0Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.10% |
| Fidelity Balanced Fund - Class K | TH1Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.30% |
| Fidelity Balanced Fund - Class K | TH2Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| Fidelity Balanced Fund - Class K | TH3Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| Fidelity Balanced Fund - Class K | TH4Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| Fidelity Balanced Fund - Class K | TH5Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.80% |
| Fidelity Balanced Fund - Class K | TH6Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| Fidelity Balanced Fund - Class K | TH7Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| Fidelity Balanced Fund - Class K | TH8Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| Fidelity Balanced Fund - Class K | TH9Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| Fidelity Balanced Fund - Class K | QDUSGovernmentandUSGovernmentAgencyObligationsMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.30% |
| Fidelity Balanced Fund - Class K | QDAAAMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| Fidelity Balanced Fund - Class K | QDAAMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| Fidelity Balanced Fund - Class K | QDAMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| Fidelity Balanced Fund - Class K | QDBBBMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.20% |
| Fidelity Balanced Fund - Class K | QDBBMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| Fidelity Balanced Fund - Class K | QDBMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| Fidelity Balanced Fund - Class K | QDNotRatedMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| Fidelity Balanced Fund - Class K | QDEquitiesMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 63.80% |
| Fidelity Balanced Fund - Class K | MSFinancialsSectorMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.60% |
| Fidelity Balanced Fund - Class K | Information Technology Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 19.10% |
| Fidelity Balanced Fund - Class K | Healthcare Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.10% |
| Fidelity Balanced Fund - Class K | Real Estate Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| Fidelity Balanced Fund - Class K | Industrial Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.60% |
| Fidelity Balanced Fund - Class K | Materials Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| Fidelity Balanced Fund - Class K | Consumer Discretionary Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.20% |
| Fidelity Balanced Fund - Class K | Consumer Staples Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.70% |
| Fidelity Balanced Fund - Class K | Communications Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.80% |
| Fidelity Balanced Fund - Class K | Energy Sector | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| Fidelity Balanced Fund - Class K | Utilities Sector Member | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| Fidelity Balanced Fund - Class K | AACommonStocksMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 63.60% |
| Fidelity Balanced Fund - Class K | AABondsMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 36.90% |
| Fidelity Balanced Fund - Class K | AAPreferredStocksMember | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
