Service and Premier Shares [Member] Expense Example - Service and Premier Shares [Member] - Treasury Instruments Portfolio |
Nov. 30, 2025
USD ($)
|
|---|---|
| Service Shares | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | $ 18 |
| Expense Example, with Redemption, 3 Years | 58 |
| Expense Example, with Redemption, 5 Years | 101 |
| Expense Example, with Redemption, 10 Years | 230 |
| Premier Shares | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 24 |
| Expense Example, with Redemption, 3 Years | 74 |
| Expense Example, with Redemption, 5 Years | 130 |
| Expense Example, with Redemption, 10 Years | $ 293 |