v3.26.1
Investor A C Institutional and Class R [Member] Average Annual Total Returns - Investor A, C, Institutional and Class R
 12 Months Ended 60 Months Ended 120 Months Ended
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
Russell 1000® Index (Reflects no deduction for fees, expenses or taxes)      
Prospectus [Line Items]      
Average Annual Return, Percent 17.37% 13.59% 14.59%
Bloomberg U.S. Aggregate Bond Index (Reflects no deduction for fees, expenses or taxes)      
Prospectus [Line Items]      
Average Annual Return, Percent 7.30% (0.36%) 2.01%
LifePath Dynamic 2040 Fund Custom Benchmark (Reflects no deduction for fees, expenses or taxes except as noted)      
Prospectus [Line Items]      
Average Annual Return, Percent [1] 17.67% 8.48% 9.91%
Investor A Shares      
Prospectus [Line Items]      
Average Annual Return, Percent 10.55% 7.42% 9.40%
Institutional Shares      
Prospectus [Line Items]      
Average Annual Return, Percent 16.88% 8.84% 10.26%
Institutional Shares | After Taxes on Distributions      
Prospectus [Line Items]      
Average Annual Return, Percent 14.48% 5.69% 7.32%
Institutional Shares | After Taxes on Distributions and Sales      
Prospectus [Line Items]      
Average Annual Return, Percent 10.37% 5.60% 7.02%
Class R Shares      
Prospectus [Line Items]      
Average Annual Return, Percent 16.41% 8.36% 9.76%
Investor C Shares      
Prospectus [Line Items]      
Average Annual Return, Percent 14.70% 7.77% 9.30%
[1] Returns for net indices generally assume the reinvestment of dividends after the deduction of the maximum withholding tax in each country applicable to non-residents of the country as determined by the index provider. Such indices use withholding tax rates that are often at a higher rate than the rates to which the Fund is subject in each country, including for countries where the Fund is not subject to withholding taxes. When this is the case, index performance will be lower than if the index used the Fund’s applicable withholding tax rates, if any.