S000047609 [Member] Average Annual Total Returns

12 Months Ended

60 Months Ended

120 Months Ended

133 Months Ended

Dec. 31, 2025

Dec. 31, 2025

Dec. 31, 2025

Dec. 31, 2025

S&P Municipal Bond Index (reflects no deduction for fees, expenses or taxes)

Prospectus [Line Items]

Average Annual Return, Percent

^[1]

4.26%

1.06%

2.44%

Lipper General & Insured Municipal Debt Funds Classification Average (reflects no deduction for taxes or sales loads)

Prospectus [Line Items]

Average Annual Return, Percent

^[2]

3.35%

0.56%

2.13%

Class A

Prospectus [Line Items]

Average Annual Return, Percent

(0.17%)

0.18%

2.86%

Performance Inception Date

Dec. 16, 2014

Class A | After Taxes on Distributions

Prospectus [Line Items]

Average Annual Return, Percent

(0.28%)

(0.09%)

2.64%

Performance Inception Date

Dec. 16, 2014

Class A | After Taxes on Distributions and Sales

Prospectus [Line Items]

Average Annual Return, Percent

1.49%

0.75%

2.80%

Performance Inception Date

Dec. 16, 2014

Class C

Prospectus [Line Items]

Average Annual Return, Percent

2.21%

(0.01%)

2.53%

Performance Inception Date

Dec. 16, 2014

Class I

Prospectus [Line Items]

Average Annual Return, Percent

3.17%

1.01%

3.39%

Performance Inception Date

Dec. 16, 2014

[1]	An index designed to measure the performance of the tax-exempt U.S. municipal bond market.
[2]	Represents the average annualized total return for all reporting funds in the Lipper General & Insured Municipal Debt Funds Classification.