Shareholder Report, Average Annual Return (Details) 74200178200_Putnam Floating Rate Income Fund_Class R_TSR Annual {Class R} |
12 Months Ended | 60 Months Ended | 120 Months Ended |
|---|---|---|---|
Feb. 28, 2026 |
Feb. 28, 2026 |
Feb. 28, 2026 |
|
| Class R | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Class R | ||
| Average Annual Return, Percent | 2.66% | 4.53% | 4.30% |
| 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 | 6.26% | 0.42% | 1.97% |
| Morningstar LSTA U.S. Leveraged Loan Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Morningstar LSTA U.S. Leveraged Loan Index | ||
| Average Annual Return, Percent | 3.93% | 5.82% | 5.84% |