v3.26.1
Hartford High Yield ETF Average Annual Total Returns
 12 Months Ended 60 Months Ended 120 Months Ended
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Bloomberg US Corporate High Yield Bond Index (reflects no deduction for fees, expenses or taxes)[Member]      
Prospectus [Line Items]      
Average Annual Return, Percent 8.62% 4.51% 6.53%
Bloomberg US Aggregate Bond Index (reflects no deduction for fees, expenses or taxes)[Member]      
Prospectus [Line Items]      
Average Annual Return, Percent 7.30% (0.36%) 2.01%
Hartford High Yield ETF | After Taxes on Distributions      
Prospectus [Line Items]      
Average Annual Return, Percent [1] 6.42% 1.81% 3.63%
Hartford High Yield ETF | After Taxes on Distributions and Sales      
Prospectus [Line Items]      
Average Annual Return, Percent [1] 5.40% 2.13% 3.57%
Hartford High Yield ETF | Return Before Taxes[Member]      
Prospectus [Line Items]      
Average Annual Return, Percent [1] 9.23% 4.19% 6.00%
[1] Class F shares of the Predecessor Fund commenced operations on February 28, 2017 and performance prior to that date is that of the Predecessor Fund’s Class I shares. Performance prior to the inception date of Class F has not been adjusted to reflect the operating expenses of Class F.