Shareholder Report, Line Graph (Details) 190901_Boston Partners Small Cap Value II Fund_R6 Share Class_TSR Annual {R6 Share Class} - USD ($) |
12 Months Ended | |
|---|---|---|
Jul. 06, 2026 |
Aug. 31, 2026 |
|
| R6 Share Class | ||
| Account Value [Line Items] | ||
| Line Graph and Table Measure Name | R6 Share Class | |
| Accumulated Value | $ 100,000 | $ 100,593 |
| Russell 3000 Total Return Index [Member] | ||
| Account Value [Line Items] | ||
| Line Graph and Table Measure Name | Russell 3000 Total Return Index | |
| Accumulated Value | 100,000 | $ 101,809 |
| Russell 2000 Value Benchmark Total Return Index [Member] | ||
| Account Value [Line Items] | ||
| Line Graph and Table Measure Name | Russell 2000 Value Benchmark Total Return Index | |
| Accumulated Value | $ 100,000 | $ 100,177 |