BetaBuilders U.S. Treasury Bond 20+ Year ETF Average Annual Total Returns |
12 Months Ended | 27 Months Ended | 32 Months Ended | 50 Months Ended | 58 Months Ended | 60 Months Ended | 83 Months Ended | 85 Months Ended | 103 Months Ended | 112 Months Ended | 120 Months Ended | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Feb. 28, 2026 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
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| BLOOMBERG US AGGREGATE INDEX(Reflects No Deduction for Fees, Expenses, or Taxes)[Member] | ||||||||||||
| Prospectus [Line Items] | ||||||||||||
| Average Annual Return, Percent | 7.30% | 6.85% | 4.25% | (0.05%) | 0.07% | (0.36%) | 1.96% | 2.12% | 1.76% | 1.60% | 2.01% | |
| ICE US TREASURY 20+ YEAR BOND INDEX(Reflects No Deduction for Fees, Expenses, or Taxes)[Member] | ||||||||||||
| Prospectus [Line Items] | ||||||||||||
| Average Annual Return, Percent | 4.29% | (2.27%) | ||||||||||
| ETF | ||||||||||||
| Prospectus [Line Items] | ||||||||||||
| Average Annual Return, Percent | 4.33% | (2.26%) | ||||||||||
| Performance Inception Date | Apr. 19, 2023 | |||||||||||
| ETF | After Taxes on Distributions | ||||||||||||
| Prospectus [Line Items] | ||||||||||||
| Average Annual Return, Percent | 2.25% | (4.14%) | ||||||||||
| ETF | After Taxes on Distributions and Sales | ||||||||||||
| Prospectus [Line Items] | ||||||||||||
| Average Annual Return, Percent | 2.56% | (2.48%) |