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John Hancock Managed Account Shares Securitized Debt Portfolio Annual Total Returns
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
John Hancock Managed Account Shares Securitized Debt Portfolio | None or SAME            
Prospectus [Line Items]            
Annual Return [Percent] 6.46% 7.13% 7.17% (7.18%) (0.18%) 5.30%