First Trust Managed Municipal ETF Average Annual Total Returns |
12 Months Ended | 60 Months Ended | 120 Months Ended | 140 Months Ended | |
|---|---|---|---|---|---|
Oct. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
|
| Bloomberg Revenue 10 Year (8-12) Index (reflects no deduction for fees, expenses or taxes)[Member] | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 5.96% | 1.12% | 2.58% | 2.86% | |
| Bloomberg Municipal Bond Index (reflects no deduction for fees, expenses or taxes)[Member] | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 4.25% | 0.80% | 2.34% | 2.61% | |
| First Trust Managed Municipal ETF | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 3.69% | 0.76% | 2.59% | 2.95% | |
| Performance Inception Date | May 13, 2014 | ||||
| First Trust Managed Municipal ETF | After Taxes on Distributions | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 2.26% | (0.39%) | 1.46% | 1.79% | |
| First Trust Managed Municipal ETF | After Taxes on Distributions and Sales | |||||
| Prospectus [Line Items] | |||||
| Average Annual Return, Percent | 2.16% | 0.08% | 1.50% | 1.76% |