Debt and Credit Agreements - Schedule of Interest Rate Derivatives (Details) - USD ($)	Dec. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Notional Value of Hedged Notes				$ 0
Fixed-to-Floating Interest Rate Swap | Fair Value Hedging | Designated as Hedging Instrument
Debt Instrument [Line Items]
Fair Value Asset Adjustment to Hedged Notes	$ 19,000,000	$ 0
Fair Value Liability Adjustment to Hedged Notes	(107,000,000)	(118,000,000)
Carrying Amount of Hedged Notes	962,000,000	682,000,000
Fixed Rate Notes Due Between 2036 and 2040
Debt Instrument [Line Items]
Notional Value of Hedged Notes	$ 1,050,000,000	$ 800,000,000	$ 800,000,000