v3.25.2
John Hancock Dynamic Municipal Bond ETF Average Annual Total Returns
12 Months Ended 14 Months Ended
Apr. 30, 2025
Dec. 31, 2024
Dec. 31, 2024
Bloomberg Municipal Bond Index (reflects no deduction for fees, expenses, or taxes)[Member]      
Prospectus [Line Items]      
Average Annual Return, Percent   1.05% 8.48%
N/A      
Prospectus [Line Items]      
Average Annual Return, Percent   3.81% 10.67%
Performance Inception Date Nov. 01, 2023    
N/A | After Taxes on Distributions      
Prospectus [Line Items]      
Average Annual Return, Percent   2.21% 9.20%
N/A | After Taxes on Distributions and Sales      
Prospectus [Line Items]      
Average Annual Return, Percent   3.60% 8.39%