Financial Instruments (Effects of Derivatives Recognized) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative gain (loss) recognized in OCI	$ 9	$ (23)
Interest rate swaps | Derivatives designated as hedging instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative gain (loss) recognized in OCI	7	(7)
Euro-denominated notes | Derivatives designated as hedging instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative gain (loss) recognized in OCI	15	(9)
Foreign exchange contracts | Derivatives not designated as hedging instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative gain (loss) recognized in OCI	$ (13)	$ (7)