Class K [Member] Average Annual Total Returns - Class K |
12 Months Ended | 60 Months Ended | 120 Months Ended |
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
|
| ICE BofA US Municipal Securities Index (Reflects no deduction for fees, expenses or taxes) | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 3.92% | 0.81% | 2.36% |
| Class K | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 3.74% | 0.79% | 2.18% |
| Class K | After Taxes on Distributions | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 3.74% | 0.78% | 2.13% |
| Class K | After Taxes on Distributions and Sales | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 3.61% | 1.26% | 2.30% |