v3.26.1
Accumulated Other Comprehensive Income (Loss) - Changes in AOCI (Detail) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Balance $ 56,115 $ 47,664
Foreign currency translation adjustments [1] (139) 227
Balance Ending 56,905 48,206
Accumulated Other Comprehensive Income (Loss) [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Balance (545) (1,178)
Foreign currency translation adjustments [2] (139) 227
Change in BlackRock, Inc.'s ownership interest 6 0
Balance Ending $ (678) $ (951)
[1] Amount for the three months ended March 31, 2026 includes a gain from a net investment hedge of $17 million (net of tax expense of $5 million). Amount for the three months ended March 31, 2025 included a loss from a net investment hedge of $34 million (net of tax benefit of $11 million).
[2] Amount for the three months ended March 31, 2026 includes a gain from a net investment hedge of $17 million (net of tax expense of $5 million). Amount for the three months ended March 31, 2025 included a loss from a net investment hedge of $34 million (net of tax benefit of $11 million).