Derivative Instruments - Credit Derivatives (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Maximum payout/Notional amount
Protection sold	$ (1,013,409)	$ (561,097)
Protection purchased with identical underlyings	1,118,754	612,481
Net protection (sold)/purchased	105,345	51,384
Other protection purchased	45,223	27,498
Total credit derivatives
Maximum payout/Notional amount
Protection sold	(1,013,409)	(561,097)
Protection purchased with identical underlyings	1,118,754	612,481
Net protection (sold)/purchased	105,345	51,384
Other protection purchased	32,443	17,027
Credit default swaps
Maximum payout/Notional amount
Protection sold	(774,698)	(450,184)
Protection purchased with identical underlyings	827,151	474,554
Net protection (sold)/purchased	52,453	24,370
Other protection purchased	7,422	6,858
Other credit derivatives
Maximum payout/Notional amount
Protection sold	(238,711)	(110,913)
Protection purchased with identical underlyings	291,603	137,927
Net protection (sold)/purchased	52,892	27,014
Other protection purchased	25,021	10,169
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	$ 12,780	$ 10,471