Derivative Instruments - Credit Derivatives, Protection Sold, Notional and Fair Value (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Protection sold credit derivatives ratings/maturity profile
Protection sold credit derivatives ratings/maturity profile - less than 1 year	$ (159,668)	$ (123,330)
Protection sold credit derivatives ratings/maturity profile - from 1-5 years	(437,635)	(339,957)
Protection sold credit derivatives ratings/maturity profile - more than 5 years	(134,692)	(36,324)
Total notional amount	(731,995)	(499,611)
Fair value of receivables	6,324	6,275
Fair value of payables	(4,208)	(2,626)
Net fair value	2,116	3,649
Investment-grade
Protection sold credit derivatives ratings/maturity profile
Protection sold credit derivatives ratings/maturity profile - less than 1 year	(127,594)	(91,155)
Protection sold credit derivatives ratings/maturity profile - from 1-5 years	(321,381)	(255,106)
Protection sold credit derivatives ratings/maturity profile - more than 5 years	(97,701)	(29,035)
Total notional amount	(546,676)	(375,296)
Fair value of receivables	3,464	3,645
Fair value of payables	(871)	(623)
Net fair value	2,593	3,022
Noninvestment-grade
Protection sold credit derivatives ratings/maturity profile
Protection sold credit derivatives ratings/maturity profile - less than 1 year	(32,074)	(32,175)
Protection sold credit derivatives ratings/maturity profile - from 1-5 years	(116,254)	(84,851)
Protection sold credit derivatives ratings/maturity profile - more than 5 years	(36,991)	(7,289)
Total notional amount	(185,319)	(124,315)
Fair value of receivables	2,860	2,630
Fair value of payables	(3,337)	(2,003)
Net fair value	$ (477)	$ 627