v3.26.1
S000079472 [Member] Average Annual Total Returns
 12 Months Ended 33 Months Ended
Dec. 31, 2025
Dec. 31, 2025
S&P 500 Index (reflects no deduction for fees, expenses, or taxes)    
Prospectus [Line Items]    
Average Annual Return, Percent 17.88% 22.97% [1]
AB US Low Volatility Equity ETF    
Prospectus [Line Items]    
Average Annual Return, Percent 12.23% 18.65% [1]
Performance Inception Date   Mar. 22, 2023
AB US Low Volatility Equity ETF | After Taxes on Distributions    
Prospectus [Line Items]    
Average Annual Return, Percent [2] 11.99% 18.38% [1]
Performance Inception Date [2]   Mar. 22, 2023
AB US Low Volatility Equity ETF | After Taxes on Distributions and Sales    
Prospectus [Line Items]    
Average Annual Return, Percent [2] 7.39% 14.65% [1]
Performance Inception Date [2]   Mar. 22, 2023
[1] Inception date is 3/22/23.
[2] After-tax returns: – Are an estimate, which is based on the highest historical individual federal marginal income tax rates, and do not reflect the impact of state and local taxes; actual after-tax returns depend on an individual investor’s tax situation and are likely to differ from those shown; and – Are not relevant to investors who hold Fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts.