Financial Instruments Cross-currency interest rate swap contracts (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Foreign exchange derivative instruments \| Derivatives Designated as Hedging Instruments:
Foreign Currency Fair Value Hedge Derivative [Line Items]
Foreign exchange derivative instruments	$ 5	$ 4

The net gain (loss) included in earnings for the period relating to components of the gain (loss) on interest rate fair value hedging instruments excluded from the assessment of fair value hedge effectiveness.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 815
-SubTopic 25
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480238/815-25-50-1

Name:	us-gaap_GainLossOnComponentsExcludedFromAssessmentOfInterestRateFairValueHedgeEffectiveness
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration