Shareholder Report, Average Annual Return (Details) 74200178300_Putnam International Small Cap Fund_Class Y_TSR Annual {Class Y} |
12 Months Ended | 60 Months Ended | 120 Months Ended |
|---|---|---|---|
Aug. 31, 2026 |
Aug. 31, 2026 |
Aug. 31, 2026 |
|
| Class Y | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Class Y | ||
| Average Annual Return, Percent | 14.12% | 6.22% | 9.38% |
| MSCI All Country World ex-U.S. Index-NR [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | MSCI All Country World ex-U.S. Index-NR | ||
| Average Annual Return, Percent | 27.35% | 9.37% | 9.64% |
| S&P Developed ex-U.S. SmallCap Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | S&P Developed ex-U.S. SmallCap Index | ||
| Average Annual Return, Percent | 18.97% | 5.55% | 8.60% |