Derivatives - Offsetting Derivative Assets and Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Derivative [Line Items]
Asset Derivatives	$ 102	$ 17
Derivative assets	12	7
Gross Amounts of Recognized (Liabilities)	(16)	(59)
Derivative Liability	74	(49)
Other liabilities
Derivative [Line Items]
Derivative, Collateral, Obligation to Return Cash	85	0
Gross Amounts of Recognized (Liabilities)	(16)	(59)
Gross Amounts Offset in the Statement of Financial Position, liabilities	(5)	(10)
Derivative Liability	74	(49)
Derivative, Collateral, Obligation to Return Cash	(85)	0
Financial Collateral (Received)	(9)	(47)
Net amount, liabilities	(2)	(2)
Other investments
Derivative [Line Items]
Asset Derivatives	102	17
Gross Amounts Offset in the Statement of Financial Position, assets	98	13
Derivative assets	12	7
Derivative, Collateral, Obligation to Return Cash	8	3
Financial Collateral Pledged	3	4
Net Amount, assets	1	0
Derivative, Collateral, Obligation to Return Cash	$ (8)	$ (3)