Derivative Instruments - Schedule of Offsetting Assets and Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Financial Assets
Gross amount of recognized assets	$ 18,080	$ 12,147
Gross amounts offset	(6,582)	(4,409)
Net amount of assets	11,498	7,738
Cash collateral	(7,116)	(5,107)
Non-cash collateral	(2,318)	(1,198)
Net amount	2,064	1,433
Financial Liabilities
Gross amount of recognized liabilities	12,386	10,045
Gross amounts offset	(39)	(612)
Net amount of liabilities	12,347	9,433
Cash collateral	(8)	(188)
Non-cash collateral	(19)	(168)
Net amount	12,320	9,077
Excess non-cash collateral received	1,400	1,300
Excess non-cash collateral pledged		81
Derivative Instruments
Financial Assets
Gross amount of recognized assets	16,016	10,714
Gross amounts offset	(6,582)	(4,409)
Net amount of assets	9,434	6,305
Cash collateral	(7,116)	(5,107)
Non-cash collateral	(2,318)	(1,198)
Net amount	0	0
Financial Liabilities
Gross amount of recognized liabilities	116	968
Gross amounts offset	(39)	(612)
Net amount of liabilities	77	356
Cash collateral	(8)	(188)
Non-cash collateral	(19)	(168)
Net amount	50	0
Embedded Derivative Instruments
Financial Assets
Gross amount of recognized assets	2,064	1,433
Gross amounts offset	0	0
Net amount of assets	2,064	1,433
Cash collateral	0	0
Non-cash collateral	0	0
Net amount	2,064	1,433
Financial Liabilities
Gross amount of recognized liabilities	12,270	9,077
Gross amounts offset	0	0
Net amount of liabilities	12,270	9,077
Cash collateral	0	0
Non-cash collateral	0	0
Net amount	$ 12,270	$ 9,077