v3.26.1
Investor P [Member] Shareholder Fees - Investor P - BLACKROCK LIFEPATH INDEX 2055 FUND - Investor P Shares
Dec. 31, 2025
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 5.25%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00% [1]
[1]
A contingent deferred sales charge of 0.10% is assessed on certain redemptions of Investor P Shares made within 18 months after purchase where no initial sales charge was paid at time of purchase as part of an investment of $1,000,000 or more.