Derivative Instruments - Credit Derivatives, Protection Sold, Notional and Fair Value (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Protection sold credit derivatives ratings/maturity profile
Protection sold credit derivatives ratings/maturity profile - less than 1 year	$ (122,318)	$ (123,728)
Protection sold credit derivatives ratings/maturity profile - from 1-5 years	(385,290)	(381,802)
Protection sold credit derivatives ratings/maturity profile - more than 5 years	(101,158)	(37,192)
Total notional amount	(608,766)	(542,722)
Fair value of receivables	5,656	3,591
Fair value of payables	(3,573)	(4,704)
Net fair value	2,083	(1,113)
Investment-grade
Protection sold credit derivatives ratings/maturity profile
Protection sold credit derivatives ratings/maturity profile - less than 1 year	(88,064)	(90,484)
Protection sold credit derivatives ratings/maturity profile - from 1-5 years	(299,190)	(294,791)
Protection sold credit derivatives ratings/maturity profile - more than 5 years	(78,835)	(30,822)
Total notional amount	(466,089)	(416,097)
Fair value of receivables	3,584	2,324
Fair value of payables	(1,774)	(1,495)
Net fair value	1,810	829
Noninvestment-grade
Protection sold credit derivatives ratings/maturity profile
Protection sold credit derivatives ratings/maturity profile - less than 1 year	(34,254)	(33,244)
Protection sold credit derivatives ratings/maturity profile - from 1-5 years	(86,100)	(87,011)
Protection sold credit derivatives ratings/maturity profile - more than 5 years	(22,323)	(6,370)
Total notional amount	(142,677)	(126,625)
Fair value of receivables	2,072	1,267
Fair value of payables	(1,799)	(3,209)
Net fair value	$ 273	$ (1,942)