S000001152 [Member] Average Annual Total Returns |
12 Months Ended | 60 Months Ended | 120 Months Ended | 261 Months Ended | 270 Months Ended | ||||
|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
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| Bloomberg U.S. Aggregate Bond Index | |||||||||
| Prospectus [Line Items] | |||||||||
| Average Annual Return, Percent | 7.30% | (0.36%) | 2.01% | ||||||
| ICE BofA U.S. 3-Month Treasury Bill Index +2% | |||||||||
| Prospectus [Line Items] | |||||||||
| Average Annual Return, Percent | 6.28% | 5.23% | 4.22% | ||||||
| CLASS I | |||||||||
| Prospectus [Line Items] | |||||||||
| Average Annual Return, Percent | 7.64% | 3.56% | 3.69% | ||||||
| Performance Inception Date | Mar. 31, 2004 | ||||||||
| CLASS M | |||||||||
| Prospectus [Line Items] | |||||||||
| Average Annual Return, Percent | 7.41% | 3.31% | 3.45% | ||||||
| Performance Inception Date | Jun. 30, 2003 | ||||||||
| CLASS M | After Taxes on Distributions | |||||||||
| Prospectus [Line Items] | |||||||||
| Average Annual Return, Percent | 4.74% | 0.00% | 0.92% | ||||||
| Performance Inception Date | Jun. 30, 2003 | ||||||||
| CLASS M | After Taxes on Distributions and Sales | |||||||||
| Prospectus [Line Items] | |||||||||
| Average Annual Return, Percent | 4.34% | 1.04% | [1] | 1.50% | [1] | ||||
| Performance Inception Date | Jun. 30, 2003 | ||||||||
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