Derivatives - Offsetting Derivative Assets and Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Derivative [Line Items]
Asset Derivatives	$ 70	$ 17
Derivative assets	32	7
Gross Amounts of Recognized (Liabilities)	(36)	(59)
Derivative Liability	(2)	(49)
Other liabilities
Derivative [Line Items]
Derivative, Collateral, Obligation to Return Cash	23	0
Gross Amounts of Recognized (Liabilities)	(36)	(59)
Gross Amounts Offset in the Statement of Financial Position, liabilities	(15)	(10)
Derivative Liability	2	(49)
Derivative, Collateral, Obligation to Return Cash	(23)	0
Financial Collateral (Received)	(20)	(47)
Net amount, liabilities	(1)	(2)
Other investments
Derivative [Line Items]
Asset Derivatives	70	17
Gross Amounts Offset in the Statement of Financial Position, assets	52	13
Derivative assets	32	7
Derivative, Collateral, Obligation to Return Cash	14	3
Financial Collateral Pledged	17	4
Net Amount, assets	1	0
Derivative, Collateral, Obligation to Return Cash	$ (14)	$ (3)