S000014682 [Member] Average Annual Total Returns |
12 Months Ended | 60 Months Ended | 120 Months Ended |
|---|---|---|---|
Dec. 31, 2024 |
Dec. 31, 2024 |
Dec. 31, 2024 |
|
| Bloomberg U.S. Aggregate Index (reflects no deduction for fees, expenses or taxes) | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 1.25% | (0.33%) | 1.35% |
| Bloomberg U.S. Credit Index (reflects no deduction for fees, expenses or taxes) | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 2.03% | 0.23% | 2.29% |
| SMASh Series C Fund | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | (2.22%) | 2.21% | 3.87% |
| SMASh Series C Fund | After Taxes on Distributions | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | (4.65%) | 0.19% | 1.85% |
| SMASh Series C Fund | After Taxes on Distributions and Sales | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | (1.27%) | 0.83% | 2.10% |