Debt and Credit Agreements - Schedule of Interest Rate Derivatives (Details) - USD ($)	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2022
Fixed-to-Floating Interest Rate Swap \| Fair Value Hedging \| Designated as Hedging Instrument
Derivative [Line Items]
Fair Value Asset Adjustment to Hedged Notes	$ 11,000,000	$ 19,000,000
Fair Value Liability Adjustment to Hedged Notes	(131,000,000)	(107,000,000)
Carrying Amount of Hedged Notes	930,000,000	962,000,000
Fixed Rate Notes Due Between 2036 and 2040
Derivative [Line Items]
Notional Value of Hedged Notes	$ 1,050,000,000	$ 1,050,000,000	$ 800,000,000

Face (par) amount of debt instrument at time of issuance.

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