v3.22.1
Revenue - Summary of Investment Advisory, Administration Fees and Securities Lending Revenue by Client Type and Investment Style (Detail) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Disaggregation Of Revenue [Line Items]    
Total revenue $ 4,699 $ 4,398
Revenue by Client Type [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue 3,833 3,592
Revenue by Client Type [Member] | Retail [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue 1,224 1,125
Revenue by Client Type [Member] | Equity ETFs [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue 1,501 1,417
Revenue by Client Type [Member] | Institutional Active [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue 675 650
Revenue by Client Type [Member] | Institutional Index [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue 263 257
Revenue by Client Type [Member] | Institutional [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue 938 907
Revenue by Client Type [Member] | Cash Management [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue 170 143
Revenue by Client Type [Member] | Long-term [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue 3,663 3,449
Revenue by Investment Style [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue 3,833 3,592
Revenue by Investment Style [Member] | Active [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue 1,851 1,739
Revenue by Investment Style [Member] | Cash Management [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue 170 143
Revenue by Investment Style [Member] | Equity Index and ETFs [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue 1,812 1,710
Revenue by Investment Style [Member] | Long-term [Member]    
Disaggregation Of Revenue [Line Items]    
Total revenue $ 3,663 $ 3,449