Derivative Instruments - Credit Derivatives (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Credit Derivatives - supplemental information
Tranche credit default swap realized credit loss protection	$ 1,000,000
Tranche credit default swap portfolio of exposure	10,000,000
Maximum payout/Notional amount
Protection sold	(489,018,000,000)	$ (542,722,000,000)
Protection purchased with identical underlyings	519,239,000,000	574,875,000,000
Net protection (sold)/purchased	30,221,000,000	32,153,000,000
Other protection purchased	46,511,000,000	22,526,000,000
Total credit derivatives
Maximum payout/Notional amount
Protection sold	(489,018,000,000)	(542,722,000,000)
Protection purchased with identical underlyings	519,239,000,000	574,875,000,000
Net protection (sold)/purchased	30,221,000,000	32,153,000,000
Other protection purchased	36,723,000,000	14,663,000,000
Credit default swaps
Maximum payout/Notional amount
Protection sold	(450,172,000,000)	(495,557,000,000)
Protection purchased with identical underlyings	473,823,000,000	509,846,000,000
Net protection (sold)/purchased	23,651,000,000	14,289,000,000
Other protection purchased	7,517,000,000	2,917,000,000
Other credit derivatives
Maximum payout/Notional amount
Protection sold	(38,846,000,000)	(47,165,000,000)
Protection purchased with identical underlyings	45,416,000,000	65,029,000,000
Net protection (sold)/purchased	6,570,000,000	17,864,000,000
Other protection purchased	29,206,000,000	11,746,000,000
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	$ 9,788,000,000	$ 7,863,000,000