Debt (Schedule of Short-term Debt) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Short-term Debt [Line Items]
Federal Home Loan Bank	$ 1,900	$ 0
Other	499	0
Total short-term borrowings	$ 2,399	$ 0
Weighted average interest rate	4.50%	0.00%
Cash collateral	$ 1	$ 0
Minimum
Short-term Debt [Line Items]
Repurchase agreements mature	31 days
Maximum
Short-term Debt [Line Items]
Repurchase agreements mature	60 days
Unsecured debt
Short-term Debt [Line Items]
Federal Home Loan Bank	$ 0	0
Other	0	0
Total short-term borrowings	0	0
Secured debt
Short-term Debt [Line Items]
Federal Home Loan Bank	1,900	0
Other	499	0
Total short-term borrowings	$ 2,399	$ 0