Derivative Instruments - Schedule of Offsetting Assets and Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Financial Assets
Gross amount of recognized assets	$ 17,843	$ 12,147
Gross amounts offset	(7,030)	(4,409)
Net amount of assets	10,813	7,738
Cash collateral	(7,579)	(5,107)
Non-cash collateral	(893)	(1,198)
Net amount	2,341	1,433
Financial Liabilities
Gross amount of recognized liabilities	11,641	10,045
Gross amounts offset	(24)	(612)
Net amount of liabilities	11,617	9,433
Cash collateral	(49)	(188)
Non-cash collateral	(151)	(168)
Net amount	11,417	9,077
Excess non-cash collateral received	1,300	1,300
Excess non-cash collateral pledged	57	81
Derivative Instruments
Financial Assets
Gross amount of recognized assets	15,502	10,714
Gross amounts offset	(7,030)	(4,409)
Net amount of assets	8,472	6,305
Cash collateral	(7,579)	(5,107)
Non-cash collateral	(893)	(1,198)
Net amount	0	0
Financial Liabilities
Gross amount of recognized liabilities	224	968
Gross amounts offset	(24)	(612)
Net amount of liabilities	200	356
Cash collateral	(49)	(188)
Non-cash collateral	(151)	(168)
Net amount	0	0
Embedded Derivative Instruments
Financial Assets
Gross amount of recognized assets	2,341	1,433
Gross amounts offset	0	0
Net amount of assets	2,341	1,433
Cash collateral	0	0
Non-cash collateral	0	0
Net amount	2,341	1,433
Financial Liabilities
Gross amount of recognized liabilities	11,417	9,077
Gross amounts offset	0	0
Net amount of liabilities	11,417	9,077
Cash collateral	0	0
Non-cash collateral	0	0
Net amount	$ 11,417	$ 9,077