Derivative Instruments - Credit Derivatives, Protection Sold, Notional and Fair Value (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Protection sold credit derivatives ratings/maturity profile
Protection sold credit derivatives ratings/maturity profile - less than 1 year	$ (159,289)	$ (123,728)
Protection sold credit derivatives ratings/maturity profile - from 1-5 years	(463,023)	(381,802)
Protection sold credit derivatives ratings/maturity profile - more than 5 years	(101,061)	(37,192)
Total notional amount	(723,373)	(542,722)
Fair value of receivables	5,254	3,591
Fair value of payables	(5,077)	(4,704)
Net fair value	177	(1,113)
Investment-grade
Protection sold credit derivatives ratings/maturity profile
Protection sold credit derivatives ratings/maturity profile - less than 1 year	(121,414)	(90,484)
Protection sold credit derivatives ratings/maturity profile - from 1-5 years	(362,872)	(294,791)
Protection sold credit derivatives ratings/maturity profile - more than 5 years	(84,259)	(30,822)
Total notional amount	(568,545)	(416,097)
Fair value of receivables	3,263	2,324
Fair value of payables	(1,567)	(1,495)
Net fair value	1,696	829
Noninvestment-grade
Protection sold credit derivatives ratings/maturity profile
Protection sold credit derivatives ratings/maturity profile - less than 1 year	(37,875)	(33,244)
Protection sold credit derivatives ratings/maturity profile - from 1-5 years	(100,151)	(87,011)
Protection sold credit derivatives ratings/maturity profile - more than 5 years	(16,802)	(6,370)
Total notional amount	(154,828)	(126,625)
Fair value of receivables	1,991	1,267
Fair value of payables	(3,510)	(3,209)
Net fair value	$ (1,519)	$ (1,942)