Derivative Instruments - Credit Derivatives, Protection Sold, Notional and Fair Value (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Protection sold credit derivatives ratings/maturity profile
Protection sold credit derivatives ratings/maturity profile - less than 1 year	$ (179,126)	$ (121,400)
Protection sold credit derivatives ratings/maturity profile - from 1-5 years	(346,265)	(333,349)
Protection sold credit derivatives ratings/maturity profile - more than 5 years	(37,185)	(34,269)
Total notional amount	(562,576)	(489,018)
Fair value of receivables	6,209	6,125
Fair value of payables	(3,166)	(2,727)
Net fair value	3,043	3,398
Investment-grade
Protection sold credit derivatives ratings/maturity profile
Protection sold credit derivatives ratings/maturity profile - less than 1 year	(145,536)	(89,981)
Protection sold credit derivatives ratings/maturity profile - from 1-5 years	(277,523)	(263,834)
Protection sold credit derivatives ratings/maturity profile - more than 5 years	(33,751)	(29,470)
Total notional amount	(456,810)	(383,285)
Fair value of receivables	4,072	3,659
Fair value of payables	(1,602)	(1,144)
Net fair value	2,470	2,515
Noninvestment-grade
Protection sold credit derivatives ratings/maturity profile
Protection sold credit derivatives ratings/maturity profile - less than 1 year	(33,590)	(31,419)
Protection sold credit derivatives ratings/maturity profile - from 1-5 years	(68,742)	(69,515)
Protection sold credit derivatives ratings/maturity profile - more than 5 years	(3,434)	(4,799)
Total notional amount	(105,766)	(105,733)
Fair value of receivables	2,137	2,466
Fair value of payables	(1,564)	(1,583)
Net fair value	$ 573	$ 883