Financial Instruments (Effects of Net Investment Hedges on Accumulated Other Comprehensive Losses) (Details) - Net Investment Hedging [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Derivative Instruments, Gain (Loss) [Line Items]
(Gain) Loss Recognized in Accumulated Other Comprehensive Losses	$ 108	$ (281)	$ (375)
Foreign Currency Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
(Gain) Loss Recognized in Accumulated Other Comprehensive Losses	0	0	(16)
(Gain) Loss Recognized in Net Earnings			(7)
Foreign Currency Denominated Debt [Member]
Derivative Instruments, Gain (Loss) [Line Items]
(Gain) Loss Recognized in Accumulated Other Comprehensive Losses	$ 108	$ (281)	$ (359)