Investor A C and Institutional [Member] Average Annual Total Returns - Investor A, C and Institutional |
12 Months Ended | 60 Months Ended | 120 Months Ended |
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
|
| 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% |
| Investor A Shares | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | (1.49%) | (0.62%) | 1.33% |
| Investor A Shares | After Taxes on Distributions | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | (1.49%) | (0.65%) | 1.31% |
| Investor A Shares | After Taxes on Distributions and Sales | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 0.51% | 0.13% | 1.61% |
| Institutional Shares | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 3.24% | 0.52% | 2.03% |
| Investor C Shares | |||
| Prospectus [Line Items] | |||
| Average Annual Return, Percent | 1.23% | (0.48%) | 1.17% |