| Form N-CSR Cover | 12 Months Ended |
| Oct. 31, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | PUTNAM FUNDS TRUST |
| Entity Central Index Key | 0001005942 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Oct. 31, 2024 |
| Shareholder Report | 12 Months Ended | |
| Oct. 31, 2024 USD ($) $ / shares | ||
| Shareholder Report [Line Items] | ||
| Document Type | N-CSR | |
| Amendment Flag | false | |
| Registrant Name | PUTNAM FUNDS TRUST | |
| Entity Central Index Key | 0001005942 | |
| Entity Investment Company Type | N-1A | |
| Document Period End Date | Oct. 31, 2024 | |
| Class A | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Putnam Core Bond Fund | |
| Class Name | Class A | |
| Trading Symbol | PTRNX | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Putnam Core Bond Fund for the period November 1, 2023, to October 31, 2024. | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents . You can also request this information by contacting us at (800) 225-1581 . | |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. | |
| Additional Information Phone Number | (800) 225-1581 | |
| Additional Information Website | https://www.franklintempleton.com/regulatory-fund-documents | |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class A $68 0.64% | |
| Expenses Paid, Amount | $ 68 | |
| Expense Ratio, Percent | 0.64% | |
| Factors Affecting Performance [Text Block] | HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE? For the twelve months ended October 31, 2024, Class A shares of Putnam Core Bond Fund returned 11.35%. The Fund compares its performance to the Bloomberg U.S. Aggregate Index and the Putnam Core Bond Linked Benchmark¹, which returned 10.55% and 10.55%, respectively, for the same period. PERFORMANCE HIGHLIGHTS Top contributors to performance: ↑ Commercial Mortgage-backed securities (CMBS) as the liquidity landscape improved significantly in 2024. Investor demand for CMBS was strong, and supply was well absorbed despite changes to expectations for the timing and number of rate cuts. ↑ Non-agency residential mortgage-backed securities continued to benefit from U.S. housing market strength, solid borrower fundamentals, and low expectations for a U.S. recession. ↑ Corporate credit exposure contributed to relative returns, particularly exposure to investment grade corporate bonds and collateralized loan obligations. Top detractors from performance: ↓ The Fund’s underweight exposure to emerging markets slightly detracted from relative returns. | |
| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. | |
| Line Graph [Table Text Block] | ||
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended October 31, 2024 1 Year 5 Year 10 Year Class A 11.35 0.85 1.76 Class A (with sales charge) 6.89 0.03 1.34 Bloomberg U.S. Aggregate Index 10.55 -0.23 1.49 Putnam Core Bond Linked Benchmark 1 10.55 2.00 1.52 | [1] |
| 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. | |
| Material Change Date | Nov. 01, 2023 | |
| Updated Performance Information Location [Text Block] | For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit https://www.franklintempleton.com/investments/options/mutual-funds . Important data provider notices and terms available at www.franklintempletondatasources.com. | |
| Net Assets | $ 728,146,739 | |
| Holdings Count | $ / shares | 736 | [2] |
| Advisory Fees Paid, Amount | $ 1,872,469 | |
| Investment Company Portfolio Turnover | 372% | |
| Additional Fund Statistics [Text Block] | KEY FUND STATISTICS (as of October 31, 2024) Total Net Assets $728,146,739 Total Number of Portfolio Holdings * 736 Total Management Fee Paid $1,872,469 Portfolio Turnover Rate 372% | [2] |
| Holdings [Text Block] | [3] | |
| Material Fund Change [Text Block] | HOW HAS THE FUND CHANGED? On May 31, 2023, Franklin Resources, Inc. (“Franklin Templeton”) and Great-West Lifeco Inc., the parent company of Putnam U.S. Holdings I, LLC (“Putnam Holdings”), announced that they had entered into a definitive agreement for a subsidiary of Franklin Templeton to acquire Putnam Holdings in a stock and cash transaction (the “Transaction”). The Transaction was completed on January 1, 2024. As part of the Transaction, your Fund’s then-current investment advisor, Putnam Investment Management, LLC (“Putnam Management”), a wholly-owned subsidiary of Putnam Holdings, and your Fund’s then-current sub-advisors, Putnam Investments Limited (“PIL”) and The Putnam Advisory Company, LLC (“PAC”), indirect, wholly-owned subsidiaries of Putnam Holdings, became indirect, wholly-owned subsidiaries of Franklin Templeton. In connection with the Transaction, shareholders of your Fund approved a new management contract with Putnam Management and new sub-advisory contracts with PIL and PAC. The new contracts are identical to the previous contracts, except for the effective dates, initial terms, updates to fund names as necessary to reflect previous name changes, and certain non-substantive changes. Effective July 15, 2024, Putnam Management transferred its management contract for your Fund to Franklin Advisers, Inc. (“Franklin Advisers”), and Franklin Advisers replaced Putnam Management as the investment adviser to your Fund. In connection with the transfer, your Fund’s portfolio managers, along with supporting research analysts and certain other investment staff of Putnam Management, also became employees of Franklin Advisers. Putnam Management also transferred to Franklin Advisers its sub-management agreement with PIL in respect of your Fund. Franklin Advisers is an indirect, wholly-owned subsidiary of Franklin Templeton. In addition, effective July 15, 2024, Franklin Advisers retained Putnam Management as a sub-adviser to your Fund pursuant to a new sub-advisory agreement, and the sub-advisory contract among Putnam Management, PIL, and PAC in respect of your Fund (whereby PAC served as a sub-advisor to your Fund) was terminated. Effective November 1, 2024 (the “Effective Date”), PIL, a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Templeton (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-adviser of the Fund on the Effective Date. Effective September 30, 2024, the portfolio managers for the Fund are Michael Salm, Andrew Benson, Albert Chan, Patrick Klein, and Tina Chou. This is a summary of certain changes to the Fund since November 1, 2023 . For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by March 1, 2025, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or funddocuments putnam.com . | |
| Updated Prospectus Phone Number | (800) 225-1581 | |
| Updated Prospectus Email Address | funddocuments@putnam.com | |
| Updated Prospectus Web Address | https://www.franklintempleton.com/regulatory-fund-documents | |
| Class C | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Putnam Core Bond Fund | |
| Class Name | Class C | |
| Trading Symbol | PTRGX | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Putnam Core Bond Fund for the period November 1, 2023, to October 31, 2024. | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents . You can also request this information by contacting us at (800) 225-1581 . | |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. | |
| Additional Information Phone Number | (800) 225-1581 | |
| Additional Information Website | https://www.franklintempleton.com/regulatory-fund-documents | |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class C $146 1.39% | |
| Expenses Paid, Amount | $ 146 | |
| Expense Ratio, Percent | 1.39% | |
| Factors Affecting Performance [Text Block] | HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE? For the twelve months ended October 31, 2024, Class C shares of Putnam Core Bond Fund returned 10.44%. The Fund compares its performance to the Bloomberg U.S. Aggregate Index and the Putnam Core Bond Linked Benchmark¹, which returned 10.55% and 10.55%, respectively, for the same period. PERFORMANCE HIGHLIGHTS Top contributors to performance: ↑ Commercial Mortgage-backed securities (CMBS) as the liquidity landscape improved significantly in 2024. Investor demand for CMBS was strong, and supply was well absorbed despite changes to expectations for the timing and number of rate cuts. ↑ Non-agency residential mortgage-backed securities continued to benefit from U.S. housing market strength, solid borrower fundamentals, and low expectations for a U.S. recession. ↑ Corporate credit exposure contributed to relative returns, particularly exposure to investment grade corporate bonds and collateralized loan obligations. Top detractors from performance: ↓ The Fund’s underweight exposure to emerging markets slightly detracted from relative returns. | |
| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. | |
| Line Graph [Table Text Block] | ||
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended October 31, 2024 1 Year 5 Year 10 Year Class C 10.44 0.11 1.15 Class C (with sales charge) 9.44 0.11 1.15 Bloomberg U.S. Aggregate Index 10.55 -0.23 1.49 Putnam Core Bond Linked Benchmark 1 10.55 2.00 1.52 | [4] |
| 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. | |
| Material Change Date | Nov. 01, 2023 | |
| Updated Performance Information Location [Text Block] | For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit https://www.franklintempleton.com/investments/options/mutual-funds . Important data provider notices and terms available at www.franklintempletondatasources.com. | |
| Net Assets | $ 728,146,739 | |
| Holdings Count | $ / shares | 736 | [5] |
| Advisory Fees Paid, Amount | $ 1,872,469 | |
| Investment Company Portfolio Turnover | 372% | |
| Additional Fund Statistics [Text Block] | KEY FUND STATISTICS (as of October 31, 2024) Total Net Assets $728,146,739 Total Number of Portfolio Holdings * 736 Total Management Fee Paid $1,872,469 Portfolio Turnover Rate 372% | [5] |
| Holdings [Text Block] | [6] | |
| Material Fund Change [Text Block] | HOW HAS THE FUND CHANGED? On May 31, 2023, Franklin Resources, Inc. (“Franklin Templeton”) and Great-West Lifeco Inc., the parent company of Putnam U.S. Holdings I, LLC (“Putnam Holdings”), announced that they had entered into a definitive agreement for a subsidiary of Franklin Templeton to acquire Putnam Holdings in a stock and cash transaction (the “Transaction”). The Transaction was completed on January 1, 2024. As part of the Transaction, your Fund’s then-current investment advisor, Putnam Investment Management, LLC (“Putnam Management”), a wholly-owned subsidiary of Putnam Holdings, and your Fund’s then-current sub-advisors, Putnam Investments Limited (“PIL”) and The Putnam Advisory Company, LLC (“PAC”), indirect, wholly-owned subsidiaries of Putnam Holdings, became indirect, wholly-owned subsidiaries of Franklin Templeton. In connection with the Transaction, shareholders of your Fund approved a new management contract with Putnam Management and new sub-advisory contracts with PIL and PAC. The new contracts are identical to the previous contracts, except for the effective dates, initial terms, updates to fund names as necessary to reflect previous name changes, and certain non-substantive changes. Effective July 15, 2024, Putnam Management transferred its management contract for your Fund to Franklin Advisers, Inc. (“Franklin Advisers”), and Franklin Advisers replaced Putnam Management as the investment adviser to your Fund. In connection with the transfer, your Fund’s portfolio managers, along with supporting research analysts and certain other investment staff of Putnam Management, also became employees of Franklin Advisers. Putnam Management also transferred to Franklin Advisers its sub-management agreement with PIL in respect of your Fund. Franklin Advisers is an indirect, wholly-owned subsidiary of Franklin Templeton. In addition, effective July 15, 2024, Franklin Advisers retained Putnam Management as a sub-adviser to your Fund pursuant to a new sub-advisory agreement, and the sub-advisory contract among Putnam Management, PIL, and PAC in respect of your Fund (whereby PAC served as a sub-advisor to your Fund) was terminated. Effective November 1, 2024 (the “Effective Date”), PIL, a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Templeton (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-adviser of the Fund on the Effective Date. Effective September 30, 2024, the portfolio managers for the Fund are Michael Salm, Andrew Benson, Albert Chan, Patrick Klein, and Tina Chou. This is a summary of certain changes to the Fund since November 1, 2023 . For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by March 1, 2025, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or funddocuments putnam.com . | |
| Updated Prospectus Phone Number | (800) 225-1581 | |
| Updated Prospectus Email Address | funddocuments@putnam.com | |
| Updated Prospectus Web Address | https://www.franklintempleton.com/regulatory-fund-documents | |
| Class R | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Putnam Core Bond Fund | |
| Class Name | Class R | |
| Trading Symbol | PTRKX | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Putnam Core Bond Fund for the period November 1, 2023, to October 31, 2024. | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents . You can also request this information by contacting us at (800) 225-1581 . | |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. | |
| Additional Information Phone Number | (800) 225-1581 | |
| Additional Information Website | https://www.franklintempleton.com/regulatory-fund-documents | |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class R $93 0.88% | |
| Expenses Paid, Amount | $ 93 | |
| Expense Ratio, Percent | 0.88% | |
| Factors Affecting Performance [Text Block] | HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE? For the twelve months ended October 31, 2024, Class R shares of Putnam Core Bond Fund returned 10.97%. The Fund compares its performance to the Bloomberg U.S. Aggregate Index and the Putnam Core Bond Linked Benchmark¹, which returned 10.55% and 10.55%, respectively, for the same period. PERFORMANCE HIGHLIGHTS Top contributors to performance: ↑ Commercial Mortgage-backed securities (CMBS) as the liquidity landscape improved significantly in 2024. Investor demand for CMBS was strong, and supply was well absorbed despite changes to expectations for the timing and number of rate cuts. ↑ Non-agency residential mortgage-backed securities continued to benefit from U.S. housing market strength, solid borrower fundamentals, and low expectations for a U.S. recession. ↑ Corporate credit exposure contributed to relative returns, particularly exposure to investment grade corporate bonds and collateralized loan obligations. Top detractors from performance: ↓ The Fund’s underweight exposure to emerging markets slightly detracted from relative returns. | |
| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. | |
| Line Graph [Table Text Block] | ||
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended October 31, 2024 1 Year 5 Year 10 Year Class R 10.97 0.60 1.50 Bloomberg U.S. Aggregate Index 10.55 -0.23 1.49 Putnam Core Bond Linked Benchmark 1 10.55 2.00 1.52 | [7] |
| 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. | |
| Material Change Date | Nov. 01, 2023 | |
| Updated Performance Information Location [Text Block] | For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit https://www.franklintempleton.com/investments/options/mutual-funds . Important data provider notices and terms available at www.franklintempletondatasources.com. | |
| Net Assets | $ 728,146,739 | |
| Holdings Count | $ / shares | 736 | [8] |
| Advisory Fees Paid, Amount | $ 1,872,469 | |
| Investment Company Portfolio Turnover | 372% | |
| Additional Fund Statistics [Text Block] | KEY FUND STATISTICS (as of October 31, 2024) Total Net Assets $728,146,739 Total Number of Portfolio Holdings * 736 Total Management Fee Paid $1,872,469 Portfolio Turnover Rate 372% | [8] |
| Holdings [Text Block] | [9] | |
| Material Fund Change [Text Block] | HOW HAS THE FUND CHANGED? On May 31, 2023, Franklin Resources, Inc. (“Franklin Templeton”) and Great-West Lifeco Inc., the parent company of Putnam U.S. Holdings I, LLC (“Putnam Holdings”), announced that they had entered into a definitive agreement for a subsidiary of Franklin Templeton to acquire Putnam Holdings in a stock and cash transaction (the “Transaction”). The Transaction was completed on January 1, 2024. As part of the Transaction, your Fund’s then-current investment advisor, Putnam Investment Management, LLC (“Putnam Management”), a wholly-owned subsidiary of Putnam Holdings, and your Fund’s then-current sub-advisors, Putnam Investments Limited (“PIL”) and The Putnam Advisory Company, LLC (“PAC”), indirect, wholly-owned subsidiaries of Putnam Holdings, became indirect, wholly-owned subsidiaries of Franklin Templeton. In connection with the Transaction, shareholders of your Fund approved a new management contract with Putnam Management and new sub-advisory contracts with PIL and PAC. The new contracts are identical to the previous contracts, except for the effective dates, initial terms, updates to fund names as necessary to reflect previous name changes, and certain non-substantive changes. Effective July 15, 2024, Putnam Management transferred its management contract for your Fund to Franklin Advisers, Inc. (“Franklin Advisers”), and Franklin Advisers replaced Putnam Management as the investment adviser to your Fund. In connection with the transfer, your Fund’s portfolio managers, along with supporting research analysts and certain other investment staff of Putnam Management, also became employees of Franklin Advisers. Putnam Management also transferred to Franklin Advisers its sub-management agreement with PIL in respect of your Fund. Franklin Advisers is an indirect, wholly-owned subsidiary of Franklin Templeton. In addition, effective July 15, 2024, Franklin Advisers retained Putnam Management as a sub-adviser to your Fund pursuant to a new sub-advisory agreement, and the sub-advisory contract among Putnam Management, PIL, and PAC in respect of your Fund (whereby PAC served as a sub-advisor to your Fund) was terminated. Effective November 1, 2024 (the “Effective Date”), PIL, a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Templeton (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-adviser of the Fund on the Effective Date. Effective September 30, 2024, the portfolio managers for the Fund are Michael Salm, Andrew Benson, Albert Chan, Patrick Klein, and Tina Chou. This is a summary of certain changes to the Fund since November 1, 2023 . For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by March 1, 2025, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or funddocuments putnam.com . | |
| Updated Prospectus Phone Number | (800) 225-1581 | |
| Updated Prospectus Email Address | funddocuments@putnam.com | |
| Updated Prospectus Web Address | https://www.franklintempleton.com/regulatory-fund-documents | |
| Class R6 | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Putnam Core Bond Fund | |
| Class Name | Class R6 | |
| Trading Symbol | PTREX | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Putnam Core Bond Fund for the period November 1, 2023, to October 31, 2024. | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents . You can also request this information by contacting us at (800) 225-1581 . | |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. | |
| Additional Information Phone Number | (800) 225-1581 | |
| Additional Information Website | https://www.franklintempleton.com/regulatory-fund-documents | |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class R6 $41 0.39% | |
| Expenses Paid, Amount | $ 41 | |
| Expense Ratio, Percent | 0.39% | |
| Factors Affecting Performance [Text Block] | HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE? For the twelve months ended October 31, 2024, Class R6 shares of Putnam Core Bond Fund returned 11.50%. The Fund compares its performance to the Bloomberg U.S. Aggregate Index and the Putnam Core Bond Linked Benchmark¹, which returned 10.55% and 10.55%, respectively, for the same period. PERFORMANCE HIGHLIGHTS Top contributors to performance: ↑ Commercial Mortgage-backed securities (CMBS) as the liquidity landscape improved significantly in 2024. Investor demand for CMBS was strong, and supply was well absorbed despite changes to expectations for the timing and number of rate cuts. ↑ Non-agency residential mortgage-backed securities continued to benefit from U.S. housing market strength, solid borrower fundamentals, and low expectations for a U.S. recession. ↑ Corporate credit exposure contributed to relative returns, particularly exposure to investment grade corporate bonds and collateralized loan obligations. Top detractors from performance: ↓ The Fund’s underweight exposure to emerging markets slightly detracted from relative returns. | |
| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. | |
| Line Graph [Table Text Block] | ||
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended October 31, 2024 1 Year 5 Year 10 Year Class R6 11.50 1.10 2.00 Bloomberg U.S. Aggregate Index 10.55 -0.23 1.49 Putnam Core Bond Linked Benchmark 1 10.55 2.00 1.52 | [10] |
| 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. | |
| Material Change Date | Nov. 01, 2023 | |
| Updated Performance Information Location [Text Block] | For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit https://www.franklintempleton.com/investments/options/mutual-funds . Important data provider notices and terms available at www.franklintempletondatasources.com. | |
| Net Assets | $ 728,146,739 | |
| Holdings Count | $ / shares | 736 | [11] |
| Advisory Fees Paid, Amount | $ 1,872,469 | |
| Investment Company Portfolio Turnover | 372% | |
| Additional Fund Statistics [Text Block] | KEY FUND STATISTICS (as of October 31, 2024) Total Net Assets $728,146,739 Total Number of Portfolio Holdings * 736 Total Management Fee Paid $1,872,469 Portfolio Turnover Rate 372% | [11] |
| Holdings [Text Block] | [12] | |
| Material Fund Change [Text Block] | HOW HAS THE FUND CHANGED? On May 31, 2023, Franklin Resources, Inc. (“Franklin Templeton”) and Great-West Lifeco Inc., the parent company of Putnam U.S. Holdings I, LLC (“Putnam Holdings”), announced that they had entered into a definitive agreement for a subsidiary of Franklin Templeton to acquire Putnam Holdings in a stock and cash transaction (the “Transaction”). The Transaction was completed on January 1, 2024. As part of the Transaction, your Fund’s then-current investment advisor, Putnam Investment Management, LLC (“Putnam Management”), a wholly-owned subsidiary of Putnam Holdings, and your Fund’s then-current sub-advisors, Putnam Investments Limited (“PIL”) and The Putnam Advisory Company, LLC (“PAC”), indirect, wholly-owned subsidiaries of Putnam Holdings, became indirect, wholly-owned subsidiaries of Franklin Templeton. In connection with the Transaction, shareholders of your Fund approved a new management contract with Putnam Management and new sub-advisory contracts with PIL and PAC. The new contracts are identical to the previous contracts, except for the effective dates, initial terms, updates to fund names as necessary to reflect previous name changes, and certain non-substantive changes. Effective July 15, 2024, Putnam Management transferred its management contract for your Fund to Franklin Advisers, Inc. (“Franklin Advisers”), and Franklin Advisers replaced Putnam Management as the investment adviser to your Fund. In connection with the transfer, your Fund’s portfolio managers, along with supporting research analysts and certain other investment staff of Putnam Management, also became employees of Franklin Advisers. Putnam Management also transferred to Franklin Advisers its sub-management agreement with PIL in respect of your Fund. Franklin Advisers is an indirect, wholly-owned subsidiary of Franklin Templeton. In addition, effective July 15, 2024, Franklin Advisers retained Putnam Management as a sub-adviser to your Fund pursuant to a new sub-advisory agreement, and the sub-advisory contract among Putnam Management, PIL, and PAC in respect of your Fund (whereby PAC served as a sub-advisor to your Fund) was terminated. Effective November 1, 2024 (the “Effective Date”), PIL, a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Templeton (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-adviser of the Fund on the Effective Date. Effective September 30, 2024, the portfolio managers for the Fund are Michael Salm, Andrew Benson, Albert Chan, Patrick Klein, and Tina Chou. This is a summary of certain changes to the Fund since November 1, 2023 . For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by March 1, 2025, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or funddocuments putnam.com . | |
| Updated Prospectus Phone Number | (800) 225-1581 | |
| Updated Prospectus Email Address | funddocuments@putnam.com | |
| Updated Prospectus Web Address | https://www.franklintempleton.com/regulatory-fund-documents | |
| Class Y | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Putnam Core Bond Fund | |
| Class Name | Class Y | |
| Trading Symbol | PYTRX | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Putnam Core Bond Fund for the period November 1, 2023, to October 31, 2024. | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents . You can also request this information by contacting us at (800) 225-1581 . | |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. | |
| Additional Information Phone Number | (800) 225-1581 | |
| Additional Information Website | https://www.franklintempleton.com/regulatory-fund-documents | |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class Y $41 0.39% | |
| Expenses Paid, Amount | $ 41 | |
| Expense Ratio, Percent | 0.39% | |
| Factors Affecting Performance [Text Block] | HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE? For the twelve months ended October 31, 2024, Class Y shares of Putnam Core Bond Fund returned 11.68%. The Fund compares its performance to the Bloomberg U.S. Aggregate Index and the Putnam Core Bond Linked Benchmark¹, which returned 10.55% and 10.55%, respectively, for the same period. PERFORMANCE HIGHLIGHTS Top contributors to performance: ↑ Commercial Mortgage-backed securities (CMBS) as the liquidity landscape improved significantly in 2024. Investor demand for CMBS was strong, and supply was well absorbed despite changes to expectations for the timing and number of rate cuts. ↑ Non-agency residential mortgage-backed securities continued to benefit from U.S. housing market strength, solid borrower fundamentals, and low expectations for a U.S. recession. ↑ Corporate credit exposure contributed to relative returns, particularly exposure to investment grade corporate bonds and collateralized loan obligations. Top detractors from performance: ↓ The Fund’s underweight exposure to emerging markets slightly detracted from relative returns. | |
| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. | |
| Line Graph [Table Text Block] | ||
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended October 31, 2024 1 Year 5 Year 10 Year Class Y 11.68 1.13 2.02 Bloomberg U.S. Aggregate Index 10.55 -0.23 1.49 Putnam Core Bond Linked Benchmark 1 10.55 2.00 1.52 | [13] |
| 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. | |
| Material Change Date | Nov. 01, 2023 | |
| Updated Performance Information Location [Text Block] | For current month-end performance, please call Franklin Templeton at (800) 225-1581 or visit https://www.franklintempleton.com/investments/options/mutual-funds . Important data provider notices and terms available at www.franklintempletondatasources.com. | |
| Net Assets | $ 728,146,739 | |
| Holdings Count | $ / shares | 736 | [14] |
| Advisory Fees Paid, Amount | $ 1,872,469 | |
| Investment Company Portfolio Turnover | 372% | |
| Additional Fund Statistics [Text Block] | KEY FUND STATISTICS (as of October 31, 2024) Total Net Assets $728,146,739 Total Number of Portfolio Holdings * 736 Total Management Fee Paid $1,872,469 Portfolio Turnover Rate 372% | [14] |
| Holdings [Text Block] | [15] | |
| Material Fund Change [Text Block] | HOW HAS THE FUND CHANGED? On May 31, 2023, Franklin Resources, Inc. (“Franklin Templeton”) and Great-West Lifeco Inc., the parent company of Putnam U.S. Holdings I, LLC (“Putnam Holdings”), announced that they had entered into a definitive agreement for a subsidiary of Franklin Templeton to acquire Putnam Holdings in a stock and cash transaction (the “Transaction”). The Transaction was completed on January 1, 2024. As part of the Transaction, your Fund’s then-current investment advisor, Putnam Investment Management, LLC (“Putnam Management”), a wholly-owned subsidiary of Putnam Holdings, and your Fund’s then-current sub-advisors, Putnam Investments Limited (“PIL”) and The Putnam Advisory Company, LLC (“PAC”), indirect, wholly-owned subsidiaries of Putnam Holdings, became indirect, wholly-owned subsidiaries of Franklin Templeton. In connection with the Transaction, shareholders of your Fund approved a new management contract with Putnam Management and new sub-advisory contracts with PIL and PAC. The new contracts are identical to the previous contracts, except for the effective dates, initial terms, updates to fund names as necessary to reflect previous name changes, and certain non-substantive changes. Effective July 15, 2024, Putnam Management transferred its management contract for your Fund to Franklin Advisers, Inc. (“Franklin Advisers”), and Franklin Advisers replaced Putnam Management as the investment adviser to your Fund. In connection with the transfer, your Fund’s portfolio managers, along with supporting research analysts and certain other investment staff of Putnam Management, also became employees of Franklin Advisers. Putnam Management also transferred to Franklin Advisers its sub-management agreement with PIL in respect of your Fund. Franklin Advisers is an indirect, wholly-owned subsidiary of Franklin Templeton. In addition, effective July 15, 2024, Franklin Advisers retained Putnam Management as a sub-adviser to your Fund pursuant to a new sub-advisory agreement, and the sub-advisory contract among Putnam Management, PIL, and PAC in respect of your Fund (whereby PAC served as a sub-advisor to your Fund) was terminated. Effective November 1, 2024 (the “Effective Date”), PIL, a sub-advisor of the Fund prior to the Effective Date, merged with and into Franklin Templeton Investment Management Limited (“FTIML”), a wholly-owned subsidiary of Franklin Templeton (the “Merger”). As of the Effective Date, PIL investment professionals became employees of FTIML, and the sub-advisory agreement between Franklin Advisers and PIL with respect to the Fund was terminated. In connection with the Merger, the Fund’s Trustees approved a new sub-advisory agreement between Franklin Advisers and FTIML, pursuant to which FTIML became a sub-adviser of the Fund on the Effective Date. Effective September 30, 2024, the portfolio managers for the Fund are Michael Salm, Andrew Benson, Albert Chan, Patrick Klein, and Tina Chou. This is a summary of certain changes to the Fund since November 1, 2023 . For more complete information, you may review the Fund’s current prospectus and any applicable supplements and the Fund’s next prospectus, which we expect to be available by March 1, 2025, at https://www.franklintempleton.com/regulatory-fund-documents or upon request at (800) 225-1581 or funddocuments putnam.com . | |
| Updated Prospectus Phone Number | (800) 225-1581 | |
| Updated Prospectus Email Address | funddocuments@putnam.com | |
| Updated Prospectus Web Address | https://www.franklintempleton.com/regulatory-fund-documents | |
| [1] 1 The Putnam Core Bond Linked Benchmark represents the performance of the ICE BofA U.S. Treasury Bill Index through February 27, 2023, and the performance of the Bloomberg U.S. Aggregate Index thereafter. * Includes derivatives, if applicable. Cash and Equivalents, if any, represent the market value weights of cash, derivatives, short-term securities, and other unclassified assets in the portfolio. Allocations may not total 100% because the chart includes the notional value of certain derivatives (the economic value for purposes of calculating periodic payment obligations), including to-be-announced mortgage security trades, if any, in addition to the market value of securities. Holdings and allocations may vary over time. 1 The Putnam Core Bond Linked Benchmark represents the performance of the ICE BofA U.S. Treasury Bill Index through February 27, 2023, and the performance of the Bloomberg U.S. Aggregate Index thereafter. * Includes derivatives, if applicable. Cash and Equivalents, if any, represent the market value weights of cash, derivatives, short-term securities, and other unclassified assets in the portfolio. Allocations may not total 100% because the chart includes the notional value of certain derivatives (the economic value for purposes of calculating periodic payment obligations), including to-be-announced mortgage security trades, if any, in addition to the market value of securities. Holdings and allocations may vary over time. 1 The Putnam Core Bond Linked Benchmark represents the performance of the ICE BofA U.S. Treasury Bill Index through February 27, 2023, and the performance of the Bloomberg U.S. Aggregate Index thereafter. * Includes derivatives, if applicable. Cash and Equivalents, if any, represent the market value weights of cash, derivatives, short-term securities, and other unclassified assets in the portfolio. Allocations may not total 100% because the chart includes the notional value of certain derivatives (the economic value for purposes of calculating periodic payment obligations), including to-be-announced mortgage security trades, if any, in addition to the market value of securities. Holdings and allocations may vary over time. 1 The Putnam Core Bond Linked Benchmark represents the performance of the ICE BofA U.S. Treasury Bill Index through February 27, 2023, and the performance of the Bloomberg U.S. Aggregate Index thereafter. * Includes derivatives, if applicable. Cash and Equivalents, if any, represent the market value weights of cash, derivatives, short-term securities, and other unclassified assets in the portfolio. Allocations may not total 100% because the chart includes the notional value of certain derivatives (the economic value for purposes of calculating periodic payment obligations), including to-be-announced mortgage security trades, if any, in addition to the market value of securities. Holdings and allocations may vary over time. 1 The Putnam Core Bond Linked Benchmark represents the performance of the ICE BofA U.S. Treasury Bill Index through February 27, 2023, and the performance of the Bloomberg U.S. Aggregate Index thereafter. * Includes derivatives, if applicable. Cash and Equivalents, if any, represent the market value weights of cash, derivatives, short-term securities, and other unclassified assets in the portfolio. Allocations may not total 100% because the chart includes the notional value of certain derivatives (the economic value for purposes of calculating periodic payment obligations), including to-be-announced mortgage security trades, if any, in addition to the market value of securities. Holdings and allocations may vary over time. | ||
| Shareholder Report, Line Graph (Details) - USD ($) | 12 Months Ended | ||||||||||
| Oct. 31, 2024 | Oct. 31, 2023 | Oct. 31, 2022 | Oct. 31, 2021 | Oct. 31, 2020 | Oct. 31, 2019 | Oct. 31, 2018 | Oct. 31, 2017 | Oct. 31, 2016 | Oct. 31, 2015 | Oct. 31, 2014 | |
| Class A | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Class A (with sales charge) | ||||||||||
| Account Value | $ 11,429 | $ 10,264 | $ 10,422 | $ 10,801 | $ 10,880 | $ 10,953 | $ 10,340 | $ 10,078 | $ 9,486 | $ 9,453 | $ 9,600 |
| Class C | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Class C (with sales charge) | ||||||||||
| Account Value | $ 11,212 | 10,069 | 10,224 | 10,668 | 10,832 | 10,990 | 10,463 | 10,266 | 9,737 | 9,778 | 10,000 |
| Class R | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Class R | ||||||||||
| Account Value | $ 11,610 | 10,462 | 10,639 | 11,054 | 11,163 | 11,266 | 10,664 | 10,418 | 9,832 | 9,819 | 10,000 |
| Class R6 | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Class R6 | ||||||||||
| Account Value | $ 12,196 | 10,938 | 11,073 | 11,444 | 11,498 | 11,546 | 10,875 | 10,571 | 9,930 | 9,866 | 10,000 |
| Class Y | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Class Y | ||||||||||
| Account Value | $ 12,217 | 10,940 | 11,075 | 11,447 | 11,502 | 11,550 | 10,888 | 10,582 | 9,930 | 9,876 | 10,000 |
| Bloomberg U.S. Aggregate Index [Member] | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Index | ||||||||||
| Account Value | $ 11,593 | 10,487 | 10,450 | 12,393 | 12,453 | 11,727 | 10,517 | 10,737 | 10,641 | 10,196 | 10,000 |
| Bloomberg U.S. Aggregate Index [Member] | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Index | ||||||||||
| Account Value | $ 11,593 | 10,487 | 10,450 | 12,393 | 12,453 | 11,727 | 10,517 | 10,737 | 10,641 | 10,196 | 10,000 |
| Bloomberg U.S. Aggregate Index [Member] | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Index | ||||||||||
| Account Value | $ 11,593 | 10,487 | 10,450 | 12,393 | 12,453 | 11,727 | 10,517 | 10,737 | 10,641 | 10,196 | 10,000 |
| Bloomberg U.S. Aggregate Index [Member] | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Index | ||||||||||
| Account Value | $ 11,593 | 10,487 | 10,450 | 12,393 | 12,453 | 11,727 | 10,517 | 10,737 | 10,641 | 10,196 | 10,000 |
| Bloomberg U.S. Aggregate Index [Member] | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Index | ||||||||||
| Account Value | $ 11,593 | 10,487 | 10,450 | 12,393 | 12,453 | 11,727 | 10,517 | 10,737 | 10,641 | 10,196 | 10,000 |
| Putnam Core Bond Linked Benchmark [Member] | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Putnam Core Bond Linked Benchmark | ||||||||||
| Account Value | $ 11,627 | 10,518 | 10,709 | 10,643 | 10,636 | 10,532 | 10,276 | 10,111 | 10,041 | 10,008 | 10,000 |
| Putnam Core Bond Linked Benchmark [Member] | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Putnam Core Bond Linked Benchmark | ||||||||||
| Account Value | $ 11,627 | 10,518 | 10,709 | 10,643 | 10,636 | 10,532 | 10,276 | 10,111 | 10,041 | 10,008 | 10,000 |
| Putnam Core Bond Linked Benchmark [Member] | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Putnam Core Bond Linked Benchmark | ||||||||||
| Account Value | $ 11,627 | 10,518 | 10,709 | 10,643 | 10,636 | 10,532 | 10,276 | 10,111 | 10,041 | 10,008 | 10,000 |
| Putnam Core Bond Linked Benchmark [Member] | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Putnam Core Bond Linked Benchmark | ||||||||||
| Account Value | $ 11,627 | 10,518 | 10,709 | 10,643 | 10,636 | 10,532 | 10,276 | 10,111 | 10,041 | 10,008 | 10,000 |
| Putnam Core Bond Linked Benchmark [Member] | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Putnam Core Bond Linked Benchmark | ||||||||||
| Account Value | $ 11,627 | $ 10,518 | $ 10,709 | $ 10,643 | $ 10,636 | $ 10,532 | $ 10,276 | $ 10,111 | $ 10,041 | $ 10,008 | $ 10,000 |
| Shareholder Report, Average Annual Return (Details) | 12 Months Ended | 60 Months Ended | 120 Months Ended | |
| Oct. 31, 2024 | Oct. 31, 2024 | Oct. 31, 2024 | ||
| Class A | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Class A (with sales charge) | |||
| Average Annual Return, Percent | 6.89% | 0.03% | 1.34% | |
| Class C | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Class C (with sales charge) | |||
| Average Annual Return, Percent | 9.44% | 0.11% | 1.15% | |
| Class R | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Class R | |||
| Average Annual Return, Percent | 10.97% | 0.60% | 1.50% | |
| Class R6 | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Class R6 | |||
| Average Annual Return, Percent | 11.50% | 1.10% | 2% | |
| Class Y | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Class Y | |||
| Average Annual Return, Percent | 11.68% | 1.13% | 2.02% | |
| Without Sales Load [Member] | Class A | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Class A | |||
| Average Annual Return, Percent | 11.35% | 0.85% | 1.76% | |
| Without Sales Load [Member] | Class C | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Class C | |||
| Average Annual Return, Percent | 10.44% | 0.11% | 1.15% | |
| Bloomberg U.S. Aggregate Index [Member] | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Index | |||
| Average Annual Return, Percent | 10.55% | (0.23%) | 1.49% | |
| Bloomberg U.S. Aggregate Index [Member] | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Index | |||
| Average Annual Return, Percent | 10.55% | (0.23%) | 1.49% | |
| Bloomberg U.S. Aggregate Index [Member] | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Index | |||
| Average Annual Return, Percent | 10.55% | (0.23%) | 1.49% | |
| Bloomberg U.S. Aggregate Index [Member] | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Index | |||
| Average Annual Return, Percent | 10.55% | (0.23%) | 1.49% | |
| Bloomberg U.S. Aggregate Index [Member] | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Index | |||
| Average Annual Return, Percent | 10.55% | (0.23%) | 1.49% | |
| Putnam Core Bond Linked Benchmark [Member] | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Putnam Core Bond Linked Benchmark | |||
| Average Annual Return, Percent | [1] | 10.55% | 2% | 1.52% |
| Putnam Core Bond Linked Benchmark [Member] | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Putnam Core Bond Linked Benchmark | |||
| Average Annual Return, Percent | [2] | 10.55% | 2% | 1.52% |
| Putnam Core Bond Linked Benchmark [Member] | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Putnam Core Bond Linked Benchmark | |||
| Average Annual Return, Percent | [3] | 10.55% | 2% | 1.52% |
| Putnam Core Bond Linked Benchmark [Member] | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Putnam Core Bond Linked Benchmark | |||
| Average Annual Return, Percent | [4] | 10.55% | 2% | 1.52% |
| Putnam Core Bond Linked Benchmark [Member] | ||||
| Average Annual Return [Line Items] | ||||
| Line Graph and Table Measure Name | Putnam Core Bond Linked Benchmark | |||
| Average Annual Return, Percent | [5] | 10.55% | 2% | 1.52% |
| [1] 1 The Putnam Core Bond Linked Benchmark represents the performance of the ICE BofA U.S. Treasury Bill Index through February 27, 2023, and the performance of the Bloomberg U.S. Aggregate Index thereafter. 1 The Putnam Core Bond Linked Benchmark represents the performance of the ICE BofA U.S. Treasury Bill Index through February 27, 2023, and the performance of the Bloomberg U.S. Aggregate Index thereafter. 1 The Putnam Core Bond Linked Benchmark represents the performance of the ICE BofA U.S. Treasury Bill Index through February 27, 2023, and the performance of the Bloomberg U.S. Aggregate Index thereafter. 1 The Putnam Core Bond Linked Benchmark represents the performance of the ICE BofA U.S. Treasury Bill Index through February 27, 2023, and the performance of the Bloomberg U.S. Aggregate Index thereafter. 1 The Putnam Core Bond Linked Benchmark represents the performance of the ICE BofA U.S. Treasury Bill Index through February 27, 2023, and the performance of the Bloomberg U.S. Aggregate Index thereafter. | ||||
| Label | Element | Value |
| Class A | U.S. Treasury/Agency Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 33% |
| Class A | Agency Pass-Through Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 28.40% |
| Class A | Investment-Grade Corporate Bonds [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 27.30% |
| Class A | Non-Agency Residential Mortgage-Backed Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 7.60% |
| Class A | Commercial Mortgage-Backed Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 4.60% |
| Class A | Asset-Backed Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 3.60% |
| Class A | Collateralized Loan Obligations [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 3.30% |
| Class A | Emerging-Market Bonds [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 0.60% |
| Class A | High-Yield Corporate Bonds [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 0.40% |
| Class A | Cash and Equivalents [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 7.70% |
| Label | Element | Value |
| Class C | U.S. Treasury/Agency Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 33% |
| Class C | Agency Pass-Through Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 28.40% |
| Class C | Investment-Grade Corporate Bonds [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 27.30% |
| Class C | Non-Agency Residential Mortgage-Backed Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 7.60% |
| Class C | Commercial Mortgage-Backed Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 4.60% |
| Class C | Asset-Backed Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 3.60% |
| Class C | Collateralized Loan Obligations [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 3.30% |
| Class C | Emerging-Market Bonds [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 0.60% |
| Class C | High-Yield Corporate Bonds [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 0.40% |
| Class C | Cash and Equivalents [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 7.70% |
| Label | Element | Value |
| Class R | U.S. Treasury/Agency Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 33% |
| Class R | Agency Pass-Through Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 28.40% |
| Class R | Investment-Grade Corporate Bonds [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 27.30% |
| Class R | Non-Agency Residential Mortgage-Backed Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 7.60% |
| Class R | Commercial Mortgage-Backed Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 4.60% |
| Class R | Asset-Backed Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 3.60% |
| Class R | Collateralized Loan Obligations [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 3.30% |
| Class R | Emerging-Market Bonds [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 0.60% |
| Class R | High-Yield Corporate Bonds [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 0.40% |
| Class R | Cash and Equivalents [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 7.70% |
| Label | Element | Value |
| Class R6 | U.S. Treasury/Agency Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 33% |
| Class R6 | Agency Pass-Through Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 28.40% |
| Class R6 | Investment-Grade Corporate Bonds [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 27.30% |
| Class R6 | Non-Agency Residential Mortgage-Backed Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 7.60% |
| Class R6 | Commercial Mortgage-Backed Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 4.60% |
| Class R6 | Asset-Backed Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 3.60% |
| Class R6 | Collateralized Loan Obligations [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 3.30% |
| Class R6 | Emerging-Market Bonds [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 0.60% |
| Class R6 | High-Yield Corporate Bonds [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 0.40% |
| Class R6 | Cash and Equivalents [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 7.70% |
| Label | Element | Value |
| Class Y | U.S. Treasury/Agency Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 33% |
| Class Y | Agency Pass-Through [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 28.40% |
| Class Y | Investment-Grade Corporate Bonds [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 27.30% |
| Class Y | Non-Agency Residential Mortgage-Backed Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 7.60% |
| Class Y | Commercial Mortgage-Backed Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 4.60% |
| Class Y | Asset-Backed Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 3.60% |
| Class Y | Collateralized Loan Obligations [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 3.30% |
| Class Y | Emerging-Market Bonds [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 0.60% |
| Class Y | High-Yield Corporate Bonds [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 0.40% |
| Class Y | Cash and Equivalents [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 7.70% |
