Shareholder Report, Line Graph (Details) 74200178200_Putnam Floating Rate Income Fund_Class Y_TSR Annual {Class Y} - USD ($) |
12 Months Ended | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Feb. 28, 2025 |
Feb. 29, 2024 |
Feb. 28, 2023 |
Feb. 28, 2022 |
Feb. 28, 2021 |
Feb. 29, 2020 |
Feb. 28, 2019 |
Feb. 28, 2018 |
Feb. 28, 2017 |
Feb. 29, 2016 |
Feb. 28, 2026 |
|
| Class Y | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Class Y | ||||||||||
| Accumulated Value | $ 15,529 | $ 14,450 | $ 13,017 | $ 12,757 | $ 12,521 | $ 12,140 | $ 11,836 | $ 11,507 | $ 11,067 | $ 10,000 | $ 16,001 |
| Bloomberg U.S. Aggregate Index [Member] | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Index | ||||||||||
| Accumulated Value | 11,441 | 10,813 | 10,465 | 11,592 | 11,907 | 11,744 | 10,516 | 10,193 | 10,142 | 10,000 | $ 12,158 |
| Morningstar LSTA U.S. Leveraged Loan Index [Member] | |||||||||||
| Account Value [Line Items] | |||||||||||
| Line Graph and Table Measure Name | Morningstar LSTA U.S. Leveraged Loan Index | ||||||||||
| Accumulated Value | $ 16,968 | $ 15,696 | $ 14,078 | $ 13,719 | $ 13,290 | $ 12,565 | $ 12,144 | $ 11,741 | $ 11,266 | $ 10,000 | $ 17,630 |