Debt and Credit Agreements - Schedule of Interest Rate Derivatives (Details) - USD ($)	Mar. 31, 2026	Dec. 31, 2025
Fixed-to-Floating Interest Rate Swap \| Fair Value Hedging \| Designated as Hedging Instrument
Derivative [Line Items]
Fair Value Asset Adjustment to Hedged Notes	$ 19,000,000	$ 23,000,000
Fair Value Liability Adjustment to Hedged Notes	(92,000,000)	(87,000,000)
Carrying Amount of Hedged Notes	1,227,000,000	1,236,000,000
Fixed Rate Notes Due Between 2036 and 2040
Derivative [Line Items]
Notional Value of Hedged Notes	$ 1,300,000,000	$ 1,300,000,000

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

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