S000014682 [Member] Average Annual Total Returns |
12 Months Ended | 60 Months Ended | 120 Months Ended |
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
|
| Bloomberg U.S. Aggregate Index (reflects no deduction for fees, expenses or taxes) | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 7.30% | (0.36%) | 2.01% |
| Bloomberg U.S. Credit Index (reflects no deduction for fees, expenses or taxes) | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 7.83% | (0.05%) | 3.15% |
| SMASh Series C Fund | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 12.47% | 4.03% | 4.80% |
| SMASh Series C Fund | After Taxes on Distributions | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 9.55% | 1.76% | 2.72% |
| SMASh Series C Fund | After Taxes on Distributions and Sales | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 7.30% | 2.07% | 2.77% |