DWS Treasury Portfolio Average Annual Total Returns - DWS US Trsy Money Fund Cl S [Member] - DWS U.S. Treasury Money Fund Class S - Return Before Taxes[Member] |
12 Months Ended | 60 Months Ended | 120 Months Ended | |
|---|---|---|---|---|
Mar. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2024 |
Dec. 31, 2024 |
|
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 5.06% | 2.33% | 1.61% | |
| Performance Inception Date | May 18, 2007 |