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 |
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| Bloomberg Municipal Bond Index (Reflects no deduction for fees, expenses or taxes) | ||||||
| Prospectus [Line Items] | ||||||
| Average Annual Return, Percent | 4.25% | 0.80% | 2.34% | |||
| Customized Reference Benchmark (Reflects no deduction for fees, expenses or taxes) | ||||||
| Prospectus [Line Items] | ||||||
| Average Annual Return, Percent | 3.75% | 0.90% | [1] | |||
| Class K Shares | ||||||
| Prospectus [Line Items] | ||||||
| Average Annual Return, Percent | 2.82% | 1.73% | 2.50% | |||
| Class K Shares | After Taxes on Distributions | ||||||
| Prospectus [Line Items] | ||||||
| Average Annual Return, Percent | 2.82% | 1.66% | 2.41% | |||
| Class K Shares | After Taxes on Distributions and Sales | ||||||
| Prospectus [Line Items] | ||||||
| Average Annual Return, Percent | 3.19% | 1.98% | 2.56% | |||
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