Derivative Instruments - Credit Derivatives (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Maximum payout/Notional amount
Protection sold	$ (641,304)	$ (575,178)
Protection purchased with identical underlyings	678,454	611,909
Net protection (sold)/purchased	37,150	36,731
Other protection purchased	25,887	23,664
Total credit derivatives
Maximum payout/Notional amount
Protection sold	(641,304)	(575,178)
Protection purchased with identical underlyings	678,454	611,909
Net protection (sold)/purchased	37,150	36,731
Other protection purchased	15,040	13,416
Credit default swaps
Maximum payout/Notional amount
Protection sold	(595,343)	(535,094)
Protection purchased with identical underlyings	609,926	554,565
Net protection (sold)/purchased	14,583	19,471
Other protection purchased	2,562	4,001
Other credit derivatives
Maximum payout/Notional amount
Protection sold	(45,961)	(40,084)
Protection purchased with identical underlyings	68,528	57,344
Net protection (sold)/purchased	22,567	17,260
Other protection purchased	12,478	9,415
Credit-related notes
Maximum payout/Notional amount
Protection sold	0	0
Protection purchased with identical underlyings	0	0
Net protection (sold)/purchased	0	0
Other protection purchased	$ 10,847	$ 10,248