v3.25.2
Average Annual Total Returns
 12 Months Ended 60 Months Ended 103 Months Ended
Dec. 31, 2024
Dec. 31, 2024
Dec. 31, 2024
Solactive GFS Developed Markets ex NA Large & Mid Cap Value Style USD Index (Net) (TR) (reflects reinvested dividends net of withholding taxes but reflects no deductions for fees, expenses or other taxes)      
Prospectus [Line Items]      
Average Annual Return, Percent 8.06% 6.68% 7.39%
MSCI EAFE Value Index (Net) (reflects reinvested dividends net of withholding taxes but reflects no deductions for fees, expenses or other taxes)      
Prospectus [Line Items]      
Average Annual Return, Percent 5.68% 5.09% 6.26%
Beta Advantage® International ESG Equity Income Index (Net) (reflects reinvested dividends net of withholding taxes but reflects no deductions for fees, expenses or other taxes)      
Prospectus [Line Items]      
Average Annual Return, Percent 6.53% 21.66% [1]
Combined Former Indices (reflects reinvested dividends net of withholding taxes but reflects no deductions for fees, expenses or other taxes)      
Prospectus [Line Items]      
Average Annual Return, Percent [2] 6.53% 6.37% 7.44%
MSCI EAFE Index (Net) (reflects reinvested dividends net of withholding taxes but reflects no deductions for fees, expenses or other taxes)      
Prospectus [Line Items]      
Average Annual Return, Percent 3.82% 4.73% 6.52%
C000169559 [Member]      
Prospectus [Line Items]      
Average Annual Return, Percent 5.79% 5.70% 6.57%
Performance Inception Date     Jun. 13, 2016
C000169559 [Member] | After Taxes on Distributions      
Prospectus [Line Items]      
Average Annual Return, Percent 5.13% 5.05% 5.59%
Performance Inception Date     Jun. 13, 2016
C000169559 [Member] | After Taxes on Distributions and Sales      
Prospectus [Line Items]      
Average Annual Return, Percent 4.07% 4.51% 5.12%
Performance Inception Date     Jun. 13, 2016
[1] The Life of Fund Index performance is for the period from October 14, 2022 through December 31, 2024.
[2] The Combined Former Indices 5 Years and Life of Fund performance represents the Fund’s Former Index (Beta Advantage® Sustainable International Equity Income 100 Index (Net)) performance for the period from June 13, 2016 to October 14, 2022 and the Fund’s other former Index (Beta Advantage® International ESG Equity Income Index (Net)) performance for the period from October 14, 2022 through December 31, 2024. The Combined Former Indices 1 Year performance represents the performance of the Beta Advantage® International ESG Equity Income Index (Net).