v3.26.1
S000000289 [Member] Annual Fund Operating Expenses - Nuveen High Yield Municipal Bond Fund
Mar. 31, 2026
Class A  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.48%
Distribution and Service (12b-1) Fees 0.20%
Component1 Other Expenses 1.14% [1]
Component2 Other Expenses 0.08%
Expenses (as a percentage of Assets) 1.90%
Class I  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.48%
Distribution and Service (12b-1) Fees 0.00%
Component1 Other Expenses 1.14% [1]
Component2 Other Expenses 0.08%
Expenses (as a percentage of Assets) 1.70%
Class C  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.48%
Distribution and Service (12b-1) Fees 1.00%
Component1 Other Expenses 1.14% [1]
Component2 Other Expenses 0.08%
Expenses (as a percentage of Assets) 2.70%
Class R6  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.48%
Distribution and Service (12b-1) Fees 0.00%
Component1 Other Expenses 1.14% [1]
Component2 Other Expenses 0.04%
Expenses (as a percentage of Assets) 1.66%
[1] Includes interest expense and fees paid on Fund borrowings and/or interest and related expenses from inverse floaters.