Derivative Instruments - Schedule of Offsetting Assets and Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Financial Assets
Gross amount of recognized assets	$ 20,549	$ 18,623
Gross amounts offset	(6,005)	(5,994)
Net amount of assets	14,544	12,629
Cash collateral	(9,023)	(7,784)
Non-cash collateral	(2,358)	(2,161)
Net amount	3,163	2,684
Financial Liabilities
Gross amount of recognized liabilities	16,945	15,265
Gross amounts offset	(27)	(90)
Net amount of liabilities	16,918	15,175
Cash collateral	(7)	(18)
Non-cash collateral	(55)	(28)
Net amount	16,856	15,129
Excess non-cash collateral received	1,800	1,500
Excess non-cash collateral pledged	59
Derivative Instruments
Financial Assets
Gross amount of recognized assets	17,386	15,939
Gross amounts offset	(6,005)	(5,994)
Net amount of assets	11,381	9,945
Cash collateral	(9,023)	(7,784)
Non-cash collateral	(2,358)	(2,161)
Net amount	0	0
Financial Liabilities
Gross amount of recognized liabilities	89	150
Gross amounts offset	(27)	(90)
Net amount of liabilities	62	60
Cash collateral	(7)	(18)
Non-cash collateral	(55)	(28)
Net amount	0	14
Embedded Derivative Instruments
Financial Assets
Gross amount of recognized assets	3,163	2,684
Gross amounts offset	0	0
Net amount of assets	3,163	2,684
Cash collateral	0	0
Non-cash collateral	0	0
Net amount	3,163	2,684
Financial Liabilities
Gross amount of recognized liabilities	16,856	15,115
Gross amounts offset	0	0
Net amount of liabilities	16,856	15,115
Cash collateral	0	0
Non-cash collateral	0	0
Net amount	$ 16,856	$ 15,115