Derivative Instruments - Credit Derivatives (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Maximum payout/Notional amount
Protection sold	$ (638,394)	$ (573,984)
Protection purchased with identical underlyings	681,521	609,365
Net protection (sold)/purchased	43,127	35,381
Other protection purchased	32,374	23,664
Total credit derivatives
Maximum payout/Notional amount
Protection sold	(638,394)	(573,984)
Protection purchased with identical underlyings	681,521	609,365
Net protection (sold)/purchased	43,127	35,381
Other protection purchased	19,629	13,416
Credit default swaps
Maximum payout/Notional amount
Protection sold	(577,311)	(533,900)
Protection purchased with identical underlyings	599,454	552,021
Net protection (sold)/purchased	22,143	18,121
Other protection purchased	3,198	2,786
Other credit derivatives
Maximum payout/Notional amount
Protection sold	(61,083)	(40,084)
Protection purchased with identical underlyings	82,067	57,344
Net protection (sold)/purchased	20,984	17,260
Other protection purchased	16,431	10,630
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	$ 12,745	$ 10,248