Investor A1 [Member] Average Annual Total Returns - Investor A1 |
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] | |||
| Investor A1 Shares | ||||||
| Prospectus [Line Items] | ||||||
| Average Annual Return, Percent | 2.57% | 1.56% | 2.35% | |||
| Investor A1 Shares | After Taxes on Distributions | ||||||
| Prospectus [Line Items] | ||||||
| Average Annual Return, Percent | 2.57% | 1.50% | 2.27% | |||
| Investor A1 Shares | After Taxes on Distributions and Sales | ||||||
| Prospectus [Line Items] | ||||||
| Average Annual Return, Percent | 2.98% | 1.82% | 2.42% | |||
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