John Hancock Mortgage-Backed Securities ETF Average Annual Total Returns |
12 Months Ended | 37 Months Ended | 40 Months Ended | 45 Months Ended | |
|---|---|---|---|---|---|
Apr. 30, 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 | 1.25% | (2.40%) | (2.38%) | (1.44%) | |
| Bloomberg U.S. MBS Index (reflects no deduction for fees, expenses, or taxes)[Member] | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 1.20% | (2.09%) | |||
| N/A | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 3.06% | (0.53%) | |||
| Performance Inception Date | Aug. 19, 2021 | ||||
| N/A | After Taxes on Distributions | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 1.05% | (2.20%) | |||
| N/A | After Taxes on Distributions and Sales | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 1.80% | (1.11%) |