v3.25.2
John Hancock Managed Account Shares Securitized Debt Portfolio Average Annual Total Returns
12 Months Ended 60 Months Ended 66 Months Ended
May 31, 2025
Dec. 31, 2024
Dec. 31, 2024
Dec. 31, 2024
Dec. 31, 2024
Bloomberg U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)[Member]          
Prospectus [Line Items]          
Average Annual Return, Percent   2.04% 1.25% (0.33%) 0.15%
Bloomberg U.S. Securitized MBS ABS CMBS Index (reflects no deduction for fees, expenses, or taxes)[Member]          
Prospectus [Line Items]          
Average Annual Return, Percent     1.46% (0.59%) (0.18%)
N/A          
Prospectus [Line Items]          
Average Annual Return, Percent     7.13% 2.30% 2.37%
Performance Inception Date Jul. 09, 2019        
N/A | After Taxes on Distributions          
Prospectus [Line Items]          
Average Annual Return, Percent     5.22% 0.86% 0.94%
N/A | After Taxes on Distributions and Sales          
Prospectus [Line Items]          
Average Annual Return, Percent     4.20% 1.13% 1.19%