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	$ 17,284	$ 11,867
Gross amounts offset	(6,630)	(4,453)
Net amount of assets	10,654	7,414
Cash collateral	(7,156)	(5,229)
Non-cash collateral	(2,366)	(1,245)
Net amount	1,132	940
Financial Liabilities
Gross amount of recognized liabilities	13,062	10,596
Gross amounts offset	(38)	(612)
Net amount of liabilities	13,024	9,984
Cash collateral	(8)	(188)
Non-cash collateral	(19)	(167)
Net amount	12,997	9,629
Excess non-cash collateral received	1,400	1,300
Excess non-cash collateral pledged		82
Derivative Instruments
Financial Assets
Gross amount of recognized assets	16,152	10,927
Gross amounts offset	(6,630)	(4,453)
Net amount of assets	9,522	6,474
Cash collateral	(7,156)	(5,229)
Non-cash collateral	(2,366)	(1,245)
Net amount	0	0
Financial Liabilities
Gross amount of recognized liabilities	124	967
Gross amounts offset	(38)	(612)
Net amount of liabilities	86	355
Cash collateral	(8)	(188)
Non-cash collateral	(19)	(167)
Net amount	59	0
Embedded Derivative Instruments
Financial Assets
Gross amount of recognized assets	1,132	940
Gross amounts offset	0	0
Net amount of assets	1,132	940
Cash collateral	0	0
Non-cash collateral	0	0
Net amount	1,132	940
Financial Liabilities
Gross amount of recognized liabilities	12,938	9,629
Gross amounts offset	0	0
Net amount of liabilities	12,938	9,629
Cash collateral	0	0
Non-cash collateral	0	0
Net amount	$ 12,938	$ 9,629