v3.25.2
Revenue - Summary of Investment Advisory, Administration Fees and Securities Lending Revenue by Client Type and Investment Style (Detail) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Disaggregation Of Revenue [Line Items]        
Total revenue $ 5,423 $ 4,805 $ 10,699 $ 9,533
Revenue by Client Type [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenue [1] 4,454 3,875 8,855 7,653
Revenue by Client Type [Member] | Retail [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenue [1] 1,053 1,053 2,114 2,094
Revenue by Client Type [Member] | Equity ETFs [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenue [1] 1,875 1,635 3,668 3,197
Revenue by Client Type [Member] | Institutional Active [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenue [1] 981 710 1,997 1,407
Revenue by Client Type [Member] | Institutional Index [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenue [1] 241 230 479 463
Revenue by Client Type [Member] | Institutional [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenue [1] 1,222 940 2,476 1,870
Revenue by Client Type [Member] | Cash Management [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenue [1] 304 247 597 492
Revenue by Client Type [Member] | Long-term [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenue [1] 4,150 3,628 8,258 7,161
Revenue by Investment Style [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenue [1] 4,454 3,875 8,855 7,653
Revenue by Investment Style [Member] | Equity ETFs [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenue [1] 1,875 1,635 3,668 3,197
Revenue by Investment Style [Member] | Equity Non ETFs [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenue [1] 313 285 620 573
Revenue by Investment Style [Member] | Active [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenue [1] 1,962 1,708 3,970 3,391
Revenue by Investment Style [Member] | Cash Management [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenue [1] 304 247 597 492
Revenue by Investment Style [Member] | Long-term [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenue [1] $ 4,150 $ 3,628 $ 8,258 $ 7,161
[1] Beginning in the first quarter of 2025, BlackRock reclassified the presentation of the Company's investment advisory, administration fees and securities lending revenue line items to align with the updated presentation of the Company's AUM line items. Such line items have been reclassified for 2024 to conform to this new presentation. See page 11 of Exhibit 99.2 to the Current Report on Form 8-K furnished on April 11, 2025 for the reclassified presentation of the 2024 investment advisory, administration fees and securities lending revenue line items.