v3.26.3
Revenue - Summary of Investment Advisory, Administration Fees and Securities Lending Revenue by Type (Detail) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Disaggregation Of Revenue [Line Items]        
Total revenue $ 7,752 $ 6,509 $ 21,534 $ 17,208
Investment Advisory, Administration Fees and Securities Lending Revenue [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenue [1] 6,036 5,046 17,200 13,901
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Equity Active Product [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenue 658 557 1,877 1,582
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Equity ETFs [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenue 2,134 1,597 5,916 4,347
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Equity [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenue 2,792 2,154 7,793 5,929
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Fixed Income Active [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenue 550 513 1,620 1,492
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Fixed Income ETFs [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenue 464 393 1,341 1,111
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Fixed Income [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenue 1,014 906 2,961 2,603
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Multi-asset [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenue 405 344 1,163 969
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Alternatives [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenue 908 831 2,614 2,172
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Alternatives [Member] | Private Markets [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenue 668 653 1,965 1,687
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Alternatives [Member] | Liquid Alternatives [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenue 240 178 649 485
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Non-ETF Index [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenue 399 353 1,126 973
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] 164 140 506 340
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Cash Management [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenue 354 318 1,037 915
Investment Advisory, Administration Fees and Securities Lending Revenue [Member] | Location, Statement of Income, Balance [Axis]: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax        
Disaggregation Of Revenue [Line Items]        
Total revenue 5,682 4,728 16,163 12,986
Investment Advisory Performance Fees [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenue 630 516 1,207 670
Investment Advisory Performance Fees [Member] | Equity [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenue 21 14 103 36
Investment Advisory Performance Fees [Member] | Fixed Income [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenue 0 0 5 14
Investment Advisory Performance Fees [Member] | Multi-asset [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenue 9 2 23 12
Investment Advisory Performance Fees [Member] | Alternatives [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenue 600 500 1,076 608
Investment Advisory Performance Fees [Member] | Alternatives [Member] | Private Markets [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenue 191 298 560 361
Investment Advisory Performance Fees [Member] | Alternatives [Member] | Liquid Alternatives [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenue 409 202 516 247
Technology Services and Subscription Revenue [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenue 588 515 1,684 1,450
Distribution Fees [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenue 414 355 1,198 996
Advisory [Member] | Location, Statement of Income, Balance [Axis]: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax        
Disaggregation Of Revenue [Line Items]        
Total revenue 10 12 30 39
Other [Member] | Location, Statement of Income, Balance [Axis]: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax        
Disaggregation Of Revenue [Line Items]        
Total revenue 74 65 215 152
Advisory and Other Revenue [Member]        
Disaggregation Of Revenue [Line Items]        
Total revenue $ 84 $ 77 $ 245 $ 191
[1] Amounts include securities lending revenue of $253 million and $203 million for the three months ended September 30, 2026 and 2025, respectively, and $671 million and $531 million for the nine months ended September 30, 2026 and 2025, respectively.
[2] Amounts include commodity ETFs and exchange-traded products.