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Class K [Member] Average Annual Total Returns - Class K
 12 Months Ended 60 Months Ended 120 Months Ended
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2025
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 2055 Fund Custom Benchmark (Reflects no deduction for fees, expenses or taxes except as noted)      
Prospectus [Line Items]      
Average Annual Return, Percent [1] 21.59% 10.76% 11.38%
Russell 1000® Index (Reflects no deduction for fees, expenses or taxes)      
Prospectus [Line Items]      
Average Annual Return, Percent 17.37% 13.59% 14.59%
Class K Shares      
Prospectus [Line Items]      
Average Annual Return, Percent 21.21% 10.99% 11.68%
Class K Shares | After Taxes on Distributions      
Prospectus [Line Items]      
Average Annual Return, Percent 19.15% 8.55% 9.48%
Class K Shares | After Taxes on Distributions and Sales      
Prospectus [Line Items]      
Average Annual Return, Percent 13.09% 7.61% 8.57%
[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.