v3.26.1
Revenue - Summary of Investment Advisory, Administration Fees and Securities Lending Revenue by Type (Detail) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Disaggregation Of Revenue [Line Items]    
Total revenue $ 6,698 $ 5,276
Investment Advisory, Administration Fees and Securities Lending Revenue [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue [1] 5,438 4,401
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Equity Active Product [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue 593 518
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Equity ETFs [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue 1,793 1,349
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Equity [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue 2,386 1,867
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Fixed Income Active [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue 531 492
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Fixed Income ETFs [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue 434 352
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Fixed Income [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue 965 844
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Active Multi-Asset [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue 371 313
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Alternatives [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue 855 685
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Alternatives [Member] | Private Markets [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue 658 535
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Alternatives [Member] | Liquid Alternatives [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue 197 150
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Non-ETF Index [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue 342 307
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Digital Assets, Commodities and Multi-asset ETFs [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue [2] 179 92
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Cash Management [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue 340 293
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Long-term [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue 5,098 4,108
Investment Advisory Performance Fees [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue 272 60
Investment Advisory Performance Fees [Member] | Equity [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue 22 10
Investment Advisory Performance Fees [Member] | Fixed Income [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue 2 12
Investment Advisory Performance Fees [Member] | Multi-asset [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue 9 4
Investment Advisory Performance Fees [Member] | Alternatives [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue 239 34
Investment Advisory Performance Fees [Member] | Alternatives [Member] | Private Markets [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue 232 24
Investment Advisory Performance Fees [Member] | Alternatives [Member] | Liquid Alternatives [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue 7 10
Technology Services and Subscription Revenue [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue 530 436
Distribution Fees [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue 389 321
Advisory and Other Revenue [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue 69 58
Advisory and Other Revenue [Member] | Advisory [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue 12 14
Advisory and Other Revenue [Member] | Other [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue $ 57 $ 44
[1] Amounts include securities lending revenue of $179 million and $157 million for the three months ended March 31, 2026 and 2025, respectively.
[2] Amounts include commodity ETFs and exchange-traded products ("ETPs").