S000009914 [Member] Average Annual Total Returns |
12 Months Ended | 60 Months Ended | 120 Months Ended |
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
|
| Bloomberg US Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes) | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 7.30% | (0.36%) | 2.01% |
| Class I | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 7.29% | (0.59%) | 1.90% |
| Class I | After Taxes on Distributions | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 5.68% | (1.81%) | 0.82% |
| Class I | After Taxes on Distributions and Sales | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 4.29% | (0.93%) | 1.01% |
| Class Z | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 7.50% | (0.51%) | 1.98% |
| Class N | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 7.07% | (0.91%) | 1.57% |