| Form N-CSR Cover | 6 Months Ended |
| Nov. 30, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSRS |
| Amendment Flag | false |
| Registrant Name | PUTNAM FUNDS TRUST |
| Entity Central Index Key | 0001005942 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Nov. 30, 2024 |
| Shareholder Report | 6 Months Ended | |
| Nov. 30, 2024 USD ($) $ / shares | ||
| Shareholder Report [Line Items] | ||
| Document Type | N-CSRS | |
| Amendment Flag | false | |
| Registrant Name | PUTNAM FUNDS TRUST | |
| Entity Central Index Key | 0001005942 | |
| Entity Investment Company Type | N-1A | |
| Document Period End Date | Nov. 30, 2024 | |
| Class A | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Putnam Mortgage Opportunities Fund | |
| Class Name | Class A | |
| Trading Symbol | PMORX | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about Putnam Mortgage Opportunities Fund for the period June 1, 2024, to November 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-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 . | |
| 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 SIX MONTHS? (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 $44 0.86% | [1],[2] |
| Expenses Paid, Amount | $ 44 | |
| Expense Ratio, Percent | 0.86% | |
| Net Assets | $ 507,530,860 | |
| Holdings Count | $ / shares | 470 | [3] |
| Investment Company Portfolio Turnover | 647% | |
| Additional Fund Statistics [Text Block] | KEY FUND STATISTICS (as of November 30, 2024) Total Net Assets $507,530,860 Total Number of Portfolio Holdings * 470 Portfolio Turnover Rate 647% | [3] |
| Holdings [Text Block] | [4] | |
| Updated Prospectus Web Address | https://www.franklintempleton.com/regulatory-fund-documents | |
| Class C | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Putnam Mortgage Opportunities Fund | |
| Class Name | Class C | |
| Trading Symbol | PMOZX | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about Putnam Mortgage Opportunities Fund for the period June 1, 2024, to November 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-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 . | |
| 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 SIX MONTHS? (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 $82 1.61% | [5],[6] |
| Expenses Paid, Amount | $ 82 | |
| Expense Ratio, Percent | 1.61% | |
| Net Assets | $ 507,530,860 | |
| Holdings Count | $ / shares | 470 | [7] |
| Investment Company Portfolio Turnover | 647% | |
| Additional Fund Statistics [Text Block] | KEY FUND STATISTICS (as of November 30, 2024) Total Net Assets $507,530,860 Total Number of Portfolio Holdings * 470 Portfolio Turnover Rate 647% | [7] |
| Holdings [Text Block] | [8] | |
| Updated Prospectus Web Address | https://www.franklintempleton.com/regulatory-fund-documents | |
| Class I | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Putnam Mortgage Opportunities Fund | |
| Class Name | Class I | |
| Trading Symbol | PMOTX | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about Putnam Mortgage Opportunities Fund for the period June 1, 2024, to November 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-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 . | |
| 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 SIX MONTHS? (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 I $24 0.47% | [9],[10] |
| Expenses Paid, Amount | $ 24 | |
| Expense Ratio, Percent | 0.47% | |
| Net Assets | $ 507,530,860 | |
| Holdings Count | $ / shares | 470 | [11] |
| Investment Company Portfolio Turnover | 647% | |
| Additional Fund Statistics [Text Block] | KEY FUND STATISTICS (as of November 30, 2024) Total Net Assets $507,530,860 Total Number of Portfolio Holdings * 470 Portfolio Turnover Rate 647% | [11] |
| Holdings [Text Block] | [12] | |
| Updated Prospectus Web Address | https://www.franklintempleton.com/regulatory-fund-documents | |
| Class R6 | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Putnam Mortgage Opportunities Fund | |
| Class Name | Class R6 | |
| Trading Symbol | PMOLX | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about Putnam Mortgage Opportunities Fund for the period June 1, 2024, to November 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-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 . | |
| 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 SIX MONTHS? (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 $26 0.51% | [13],[14] |
| Expenses Paid, Amount | $ 26 | |
| Expense Ratio, Percent | 0.51% | |
| Net Assets | $ 507,530,860 | |
| Holdings Count | $ / shares | 470 | [15] |
| Investment Company Portfolio Turnover | 647% | |
| Additional Fund Statistics [Text Block] | KEY FUND STATISTICS (as of November 30, 2024) Total Net Assets $507,530,860 Total Number of Portfolio Holdings * 470 Portfolio Turnover Rate 647% | [15] |
| Holdings [Text Block] | [16] | |
| Updated Prospectus Web Address | https://www.franklintempleton.com/regulatory-fund-documents | |
| Class Y | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Putnam Mortgage Opportunities Fund | |
| Class Name | Class Y | |
| Trading Symbol | PMOYX | |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about Putnam Mortgage Opportunities Fund for the period June 1, 2024, to November 30, 2024. | |
| Shareholder Report Annual or Semi-Annual | semi-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 . | |
| 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 SIX MONTHS? (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 $31 0.61% | [17],[18] |
| Expenses Paid, Amount | $ 31 | |
| Expense Ratio, Percent | 0.61% | |
| Net Assets | $ 507,530,860 | |
| Holdings Count | $ / shares | 470 | [19] |
| Investment Company Portfolio Turnover | 647% | |
| Additional Fund Statistics [Text Block] | KEY FUND STATISTICS (as of November 30, 2024) Total Net Assets $507,530,860 Total Number of Portfolio Holdings * 470 Portfolio Turnover Rate 647% | [19] |
| Holdings [Text Block] | [20] | |
| Updated Prospectus Web Address | https://www.franklintempleton.com/regulatory-fund-documents | |
| [1] * Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher. † Annualized. * 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. * Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher. † Annualized. * 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. * Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher. † Annualized. * 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. * Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher. † Annualized. * 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. * Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher. † Annualized. * 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. | ||
| Label | Element | Value |
| Class A | Agency Pass-Through Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 58.20% |
| Class A | Agency Collateralized Mortgage Obligations [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 35.30% |
| Class A | Non-Agency Residential Mortgage-Backed Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 28% |
| Class A | Commercial Mortgage-Backed Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 20% |
| Class A | Asset-Backed Securities [Member] [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 1.10% |
| Class A | Cash and Equivalents [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 15% |
| Label | Element | Value |
| Class C | Agency Pass-Through Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 58.20% |
| Class C | Agency Collateralized Mortgage Obligations [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 35.30% |
| Class C | Non-Agency Residential Mortgage-Backed Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 28% |
| Class C | Commercial Mortgage-Backed Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 20% |
| Class C | Asset-Backed Securities [Member] [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 1.10% |
| Class C | Cash and Equivalents [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 15% |
| Label | Element | Value |
| Class I | Agency Pass-Through Securities [Member] [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 58.20% |
| Class I | Agency Collateralized Mortgage Obligations [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 35.30% |
| Class I | Non-Agency Residential Mortgage-Backed Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 28% |
| Class I | Commercial Mortgage-Backed Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 20% |
| Class I | Asset-Backed Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 1.10% |
| Class I | Cash and Equivalents [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 15% |
| Label | Element | Value |
| Class R6 | Agency Pass-Through Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 58.20% |
| Class R6 | Agency Collateralized Mortgage Obligations [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 35.30% |
| Class R6 | Non-Agency Residential Mortgage-Backed Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 28% |
| Class R6 | Commercial Mortgage-Backed Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 20% |
| Class R6 | Asset-Backed Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 1.10% |
| Class R6 | Cash and Equivalents [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 15% |
| Label | Element | Value |
| Class Y | Agency Pass-Through Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 58.20% |
| Class Y | Agency Collateralized Mortgage Obligations [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 35.30% |
| Class Y | Non-Agency Residential Mortgage-Backed Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 28% |
| Class Y | Commercial Mortgage-Backed Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 20% |
| Class Y | Asset-Backed Securities [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 1.10% |
| Class Y | Cash and Equivalents [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Net Asset Value | oef_PctOfNav | 15% |
