v3.24.2.u1
Fair Value Disclosures - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($)
$ in Millions
Jun. 30, 2024
Dec. 31, 2023
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Trading securities $ 1,951 $ 1,871
Equity securities at FVTNI 2,310 1,585
Loans held By CIPs 238 205
Separate account assets 54,423 56,098
Separate account collateral liabilities under securities lending agreements 5,030 4,558
Equity Securities [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Equity securities at FVTNI 2,310 1,585
Investments Measured at NAV [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Other assets 80 80
Fair Value, Measurements, Recurring [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Held-to-maturity investments   617
Total debt securities 2,533 2,488
Total equity method 2,669 2,756
Loans held By CIPs 238 205
Federal Reserve Bank Stock 92 92
Carried interest 1,917 1,975
Other investments 457 639
Total investments 10,216 9,740
Other assets 298 256
Separate account assets 54,423 56,098
Total separate account collateral held under securities lending agreements 5,030 4,558
Total 69,967 70,652
Separate account collateral liabilities under securities lending agreements 5,030 4,558
Other liabilities 316 296
Total liabilities measured at fair value 5,346 4,854
Fair Value, Measurements, Recurring [Member] | Investment in NAV [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Trading securities   0
Held-to-maturity investments   0
Total debt securities   0
Loans held By CIPs   0
Federal Reserve Bank Stock   0
Carried interest   0
Other assets   0
Separate account assets   0
Total separate account collateral held under securities lending agreements   0
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total debt securities 0 0
Total equity method 249 246
Loans held By CIPs 0 0
Federal Reserve Bank Stock 0 0
Carried interest 0 0
Other investments 29 15
Total investments 2,588 1,846
Other assets 147 117
Separate account assets 33,898 34,621
Total separate account collateral held under securities lending agreements 1,523  
Total 38,156 38,270
Separate account collateral liabilities under securities lending agreements 1,523 1,686
Other liabilities 0 0
Total liabilities measured at fair value 1,523 1,686
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total debt securities 1,869 1,829
Total equity method 117 0
Loans held By CIPs 13 30
Federal Reserve Bank Stock 0 0
Carried interest 0 0
Other investments 0 0
Total investments 1,999 1,859
Other assets 1 19
Separate account assets 20,146 20,810
Total separate account collateral held under securities lending agreements 3,507 2,872
Total 25,653 25,560
Separate account collateral liabilities under securities lending agreements 3,507 2,872
Other liabilities 18 17
Total liabilities measured at fair value 3,525 2,889
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total debt securities 82 42
Total equity method 0 0
Loans held By CIPs 225 175
Federal Reserve Bank Stock 0 0
Carried interest 0 0
Other investments 0 0
Total investments 307 217
Other assets 150 120
Separate account assets 0 0
Total separate account collateral held under securities lending agreements 0 0
Total 457 337
Separate account collateral liabilities under securities lending agreements 0 0
Other liabilities 298 279
Total liabilities measured at fair value 298 279
Fair Value, Measurements, Recurring [Member] | Equity Securities/Mutual Funds [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Equity securities at FVTNI   1,585
Fair Value, Measurements, Recurring [Member] | Equity Securities/Mutual Funds [Member] | Investment in NAV [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Equity securities at FVTNI   0
Fair Value, Measurements, Recurring [Member] | Equity Securities/Mutual Funds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Equity securities at FVTNI 2,310 1,585
Fair Value, Measurements, Recurring [Member] | Equity Securities/Mutual Funds [Member] | Significant Other Observable Inputs (Level 2) [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Equity securities at FVTNI 0 0
Fair Value, Measurements, Recurring [Member] | Equity Securities/Mutual Funds [Member] | Significant Unobservable Inputs (Level 3) [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Equity securities at FVTNI 0 0
Fair Value, Measurements, Recurring [Member] | Debt Securities/ Fixed Income Mutual Funds [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Trading securities 1,951 1,871
Held-to-maturity investments 582  
Equity securities at FVTNI 2,310  
Fair Value, Measurements, Recurring [Member] | Debt Securities/ Fixed Income Mutual Funds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Trading securities 0 0
Held-to-maturity investments 0 0
Total separate account collateral held under securities lending agreements   1,686
Fair Value, Measurements, Recurring [Member] | Debt Securities/ Fixed Income Mutual Funds [Member] | Significant Other Observable Inputs (Level 2) [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Trading securities 1,869 1,829
Held-to-maturity investments 0 0
Fair Value, Measurements, Recurring [Member] | Debt Securities/ Fixed Income Mutual Funds [Member] | Significant Unobservable Inputs (Level 3) [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Trading securities 82 42
Held-to-maturity investments 0 0
Fair Value, Measurements, Recurring [Member] | Hedge Funds/Funds of Hedge Funds/Other [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total equity method 595 588
Fair Value, Measurements, Recurring [Member] | Hedge Funds/Funds of Hedge Funds/Other [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total equity method 0 0
Fair Value, Measurements, Recurring [Member] | Hedge Funds/Funds of Hedge Funds/Other [Member] | Significant Other Observable Inputs (Level 2) [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total equity method 0 0
Fair Value, Measurements, Recurring [Member] | Hedge Funds/Funds of Hedge Funds/Other [Member] | Significant Unobservable Inputs (Level 3) [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total equity method 0 0
Fair Value, Measurements, Recurring [Member] | Equity Fixed Income And Multi Asset Mutual Funds [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total equity method 366  
Fair Value, Measurements, Recurring [Member] | Equity Fixed Income And Multi Asset Mutual Funds [Member] | Investment in NAV [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total equity method   0
Fair Value, Measurements, Recurring [Member] | Equity Fixed Income And Multi Asset Mutual Funds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total equity method 249 246
Fair Value, Measurements, Recurring [Member] | Equity Fixed Income And Multi Asset Mutual Funds [Member] | Significant Other Observable Inputs (Level 2) [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total equity method 117 0
Fair Value, Measurements, Recurring [Member] | Equity Fixed Income And Multi Asset Mutual Funds [Member] | Significant Unobservable Inputs (Level 3) [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total equity method 0 0
Fair Value, Measurements, Recurring [Member] | Equity And Fixed Income Mutual Funds [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total equity method   246
Fair Value, Measurements, Recurring [Member] | Private/ Public Equity [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total equity method 1,096 1,264
Fair Value, Measurements, Recurring [Member] | Private/ Public Equity [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total equity method 0 0
Fair Value, Measurements, Recurring [Member] | Private/ Public Equity [Member] | Significant Other Observable Inputs (Level 2) [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total equity method 0 0
Fair Value, Measurements, Recurring [Member] | Private/ Public Equity [Member] | Significant Unobservable Inputs (Level 3) [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total equity method 0 0
Fair Value, Measurements, Recurring [Member] | Real Assets Funds [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total equity method 441 417
Fair Value, Measurements, Recurring [Member] | Real Assets Funds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total equity method 0 0
Fair Value, Measurements, Recurring [Member] | Real Assets Funds [Member] | Significant Other Observable Inputs (Level 2) [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total equity method 0 0
Fair Value, Measurements, Recurring [Member] | Real Assets Funds [Member] | Significant Unobservable Inputs (Level 3) [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total equity method 0 0
Fair Value, Measurements, Recurring [Member] | Investments Related To Deferred Cash Compensation Plans [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total equity method 171 241
Fair Value, Measurements, Recurring [Member] | Investments Related To Deferred Cash Compensation Plans [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total equity method 0 0
Fair Value, Measurements, Recurring [Member] | Investments Related To Deferred Cash Compensation Plans [Member] | Significant Other Observable Inputs (Level 2) [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total equity method 0 0
Fair Value, Measurements, Recurring [Member] | Investments Related To Deferred Cash Compensation Plans [Member] | Significant Unobservable Inputs (Level 3) [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total equity method 0 0
Fair Value, Measurements, Recurring [Member] | Equity Securities [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total separate account collateral held under securities lending agreements 1,523 1,686
Fair Value, Measurements, Recurring [Member] | Equity Securities [Member] | Investment in NAV [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total separate account collateral held under securities lending agreements   0
Fair Value, Measurements, Recurring [Member] | Equity Securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total separate account collateral held under securities lending agreements 1,523 1,686
Fair Value, Measurements, Recurring [Member] | Equity Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total separate account collateral held under securities lending agreements 0 0
Fair Value, Measurements, Recurring [Member] | Equity Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total separate account collateral held under securities lending agreements 0 0
Fair Value, Measurements, Recurring [Member] | Debt securities [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total separate account collateral held under securities lending agreements 3,507 2,872
Fair Value, Measurements, Recurring [Member] | Debt securities [Member] | Investment in NAV [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total separate account collateral held under securities lending agreements   0
Fair Value, Measurements, Recurring [Member] | Debt securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total separate account collateral held under securities lending agreements 0 0
Fair Value, Measurements, Recurring [Member] | Debt securities [Member] | Significant Other Observable Inputs (Level 2) [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total separate account collateral held under securities lending agreements 3,507 2,872
Fair Value, Measurements, Recurring [Member] | Debt securities [Member] | Significant Unobservable Inputs (Level 3) [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total separate account collateral held under securities lending agreements 0 0
Fair Value, Measurements, Recurring [Member] | Investments Measured at NAV [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total debt securities  
Total equity method 2,303  
Loans held By CIPs  
Federal Reserve Bank Stock  
Carried interest 0  
Other investments 250  
Total investments 2,553  
Other assets  
Separate account assets 0  
Total separate account collateral held under securities lending agreements  
Total 2,553  
Separate account collateral liabilities under securities lending agreements  
Other liabilities  
Total liabilities measured at fair value  
Fair Value, Measurements, Recurring [Member] | Investments Measured at NAV [Member] | Investment in NAV [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total equity method   2,510
Other investments   467
Total investments   2,977
Total   2,977
Separate account collateral liabilities under securities lending agreements   0
Other liabilities   0
Total liabilities measured at fair value   0
Fair Value, Measurements, Recurring [Member] | Investments Measured at NAV [Member] | Equity Securities/Mutual Funds [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Equity securities at FVTNI 0  
Fair Value, Measurements, Recurring [Member] | Investments Measured at NAV [Member] | Debt Securities/ Fixed Income Mutual Funds [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Trading securities  
Held-to-maturity investments  
Fair Value, Measurements, Recurring [Member] | Investments Measured at NAV [Member] | Hedge Funds/Funds of Hedge Funds/Other [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total equity method 595  
Fair Value, Measurements, Recurring [Member] | Investments Measured at NAV [Member] | Hedge Funds/Funds of Hedge Funds/Other [Member] | Investment in NAV [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total equity method   588
Fair Value, Measurements, Recurring [Member] | Investments Measured at NAV [Member] | Equity Fixed Income And Multi Asset Mutual Funds [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total equity method 0  
Fair Value, Measurements, Recurring [Member] | Investments Measured at NAV [Member] | Private/ Public Equity [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total equity method 1,096  
Fair Value, Measurements, Recurring [Member] | Investments Measured at NAV [Member] | Private/ Public Equity [Member] | Investment in NAV [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total equity method   1,264
Fair Value, Measurements, Recurring [Member] | Investments Measured at NAV [Member] | Real Assets Funds [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total equity method 441  
Fair Value, Measurements, Recurring [Member] | Investments Measured at NAV [Member] | Real Assets Funds [Member] | Investment in NAV [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total equity method   417
Fair Value, Measurements, Recurring [Member] | Investments Measured at NAV [Member] | Investments Related To Deferred Cash Compensation Plans [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total equity method 171 241
Fair Value, Measurements, Recurring [Member] | Investments Measured at NAV [Member] | Equity Securities [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total separate account collateral held under securities lending agreements  
Fair Value, Measurements, Recurring [Member] | Investments Measured at NAV [Member] | Debt securities [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total separate account collateral held under securities lending agreements  
Fair Value, Measurements, Recurring [Member] | Other [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Trading securities 0
Held-to-maturity investments 582 617
Total debt securities 582 617
Total equity method 0
Loans held By CIPs 0
Federal Reserve Bank Stock 92 92
Carried interest 1,917 1,975
Other investments 178 157
Total investments 2,769 2,841
Other assets 0
Separate account assets 379 667
Total separate account collateral held under securities lending agreements 0 0
Total 3,148 3,508
Separate account collateral liabilities under securities lending agreements 0 0
Other liabilities 0 0
Total liabilities measured at fair value 0 0
Fair Value, Measurements, Recurring [Member] | Other [Member] | Equity Securities/Mutual Funds [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Equity securities at FVTNI 0 0
Fair Value, Measurements, Recurring [Member] | Other [Member] | Hedge Funds/Funds of Hedge Funds/Other [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total equity method 0 0
Fair Value, Measurements, Recurring [Member] | Other [Member] | Equity Fixed Income And Multi Asset Mutual Funds [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total equity method 0 0
Fair Value, Measurements, Recurring [Member] | Other [Member] | Private/ Public Equity [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total equity method 0 0
Fair Value, Measurements, Recurring [Member] | Other [Member] | Real Assets Funds [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total equity method 0 0
Fair Value, Measurements, Recurring [Member] | Other [Member] | Investments Related To Deferred Cash Compensation Plans [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total equity method 0 0
Fair Value, Measurements, Recurring [Member] | Other [Member] | Equity Securities [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total separate account collateral held under securities lending agreements 0 0
Fair Value, Measurements, Recurring [Member] | Other [Member] | Debt securities [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total separate account collateral held under securities lending agreements $ 0 $ 0