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John Hancock Short Duration Municipal Opportunities Fund Annual Total Returns
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Classes A C I and R6 [Member] | John Hancock Short Duration Municipal Opportunities Fund | Class A      
Prospectus [Line Items]      
Annual Return [Percent] 4.87% 4.12% 7.24%