S000047609 [Member] Average Annual Total Returns

12 Months Ended

60 Months Ended

120 Months Ended

121 Months Ended

Dec. 31, 2024

Dec. 31, 2024

Dec. 31, 2024

Dec. 31, 2024

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

Prospectus [Line Items]

Average Annual Return, Percent

^[1]

1.90%

1.20%

2.34%

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

Prospectus [Line Items]

Average Annual Return, Percent

^[2]

2.27%

0.82%

2.07%

Class A

Prospectus [Line Items]

Average Annual Return, Percent

1.60%

0.88%

3.03%

Performance Inception Date

Dec. 16, 2014

Class A | After Taxes on Distributions

Prospectus [Line Items]

Average Annual Return, Percent

1.44%

0.61%

2.82%

Performance Inception Date

Dec. 16, 2014

Class A | After Taxes on Distributions and Sales

Prospectus [Line Items]

Average Annual Return, Percent

2.43%

1.24%

2.91%

Performance Inception Date

Dec. 16, 2014

Class C

Prospectus [Line Items]

Average Annual Return, Percent

3.80%

0.67%

2.68%

Performance Inception Date

Dec. 16, 2014

Class I

Prospectus [Line Items]

Average Annual Return, Percent

4.95%

1.71%

3.55%

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.