v3.22.0.1
Investments - Additional Information (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Investments in funds at NAV $ 3,470  
Investment at fair value 83,427 $ 82,778
Level 3 [Member]    
Net gains / (losses) on assets 66 159
Level 3 [Member] | Interest Income [Member]    
Net gains / (losses) on assets 24 24
Investments [Member]    
Investments in funds at NAV 3,469 3,664
Investment at fair value 79,958 79,114
Net gains / (losses) on assets 449 215
Net unrealized gains / (losses) on assets relating to instruments still held at the reporting date 1,263 (443)
Investments [Member] | Operating income (loss) [Member]    
Net gains / (losses) on assets 1,530 (428)
Investments [Member] | Interest Income [Member]    
Net gains / (losses) on assets 180 200
Investments [Member] | Level 3 [Member]    
Investment at fair value 13,902 16,423
Net gains / (losses) on assets 1,710 (228)
Equity Securities [Member]    
Equity method investment 5,810 7,140
Equity Securities [Member] | Investments [Member]    
Investment at fair value 17,138 17,429
Net gains / (losses) on assets 225 68
Net unrealized gains / (losses) on assets relating to instruments still held at the reporting date 945 (252)
Equity Securities [Member] | Investments [Member] | Level 3 [Member]    
Investment at fair value 7,915 9,642
Fair Value Option [Member]    
Gains/(losses) recognized on equity securities 2,120 573
Investments in funds at NAV [Member]    
Investments in funds at NAV 1,800 2,350
Investment at fair value 1,670 $ 1,310
Covered funds [Member]    
Investments in Volcker Covered funds $ 903