John Hancock Mortgage-Backed Securities ETF Average Annual Total Returns |
12 Months Ended | 20 Months Ended | 49 Months Ended | 52 Months Ended | 57 Months Ended | ||
|---|---|---|---|---|---|---|---|
Mar. 31, 2026 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
|
| Bloomberg U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)[Member] | |||||||
| Prospectus [Line Items] | |||||||
| Average Annual Return, Percent | 6.20% | 7.30% | 7.20% | (0.09%) | (0.24%) | 0.34% | |
| Bloomberg U.S. MBS Index (reflects no deduction for fees, expenses, or taxes)[Member] | |||||||
| Prospectus [Line Items] | |||||||
| Average Annual Return, Percent | 8.58% | 0.26% | |||||
| None or SAME | |||||||
| Prospectus [Line Items] | |||||||
| Average Annual Return, Percent | 8.33% | 1.43% | |||||
| Performance Inception Date | Aug. 19, 2021 | ||||||
| None or SAME | After Taxes on Distributions | |||||||
| Prospectus [Line Items] | |||||||
| Average Annual Return, Percent | 6.35% | (0.30%) | |||||
| None or SAME | After Taxes on Distributions and Sales | |||||||
| Prospectus [Line Items] | |||||||
| Average Annual Return, Percent | 4.90% | 0.32% | |||||