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, 2024

Dec. 31, 2024

Dec. 31, 2024

Bloomberg Municipal Bond Index (Reflects no deduction for fees, expenses or taxes)

Prospectus [Line Items]

Average Annual Return, Percent

1.05%

0.99%

2.25%

Customized Reference Benchmark (Reflects no deduction for fees, expenses or taxes)

Prospectus [Line Items]

Average Annual Return, Percent

^[1]

2.12%

1.31%

Investor A Shares

Prospectus [Line Items]

Average Annual Return, Percent

(1.42%)

(0.63%)

1.56%

Investor C Shares

Prospectus [Line Items]

Average Annual Return, Percent

1.26%

(0.52%)

1.38%

Institutional Shares

Prospectus [Line Items]

Average Annual Return, Percent

3.26%

0.45%

2.22%

Institutional Shares | After Taxes on Distributions

Prospectus [Line Items]

Average Annual Return, Percent

3.10%

0.33%

2.01%

Institutional Shares | After Taxes on Distributions and Sales

Prospectus [Line Items]

Average Annual Return, Percent

3.26%

0.85%

2.21%

[1]	The Customized Reference Benchmark commenced in November 2017 and therefore the Customized Reference Benchmark does not have 10-year returns.