Financial Instruments (Effects of Net Investment Hedges on Accumulated Other Comprehensive Losses) (Details) - Net Investment Hedging [Member] - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Derivative Instruments, Gain (Loss) [Line Items]
(Gain) Loss Recognized in Accumulated Other Comprehensive Losses	$ (128)	$ (241)
Gain (Loss) Recognized in Net Earnings (Losses)	0	(5)
Foreign currency contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
(Gain) Loss Recognized in Accumulated Other Comprehensive Losses	0	(35)
Gain (Loss) Recognized in Net Earnings (Losses)	0	(5)
Foreign currency denominated debt [Member]
Derivative Instruments, Gain (Loss) [Line Items]
(Gain) Loss Recognized in Accumulated Other Comprehensive Losses	(128)	(206)
Gain (Loss) Recognized in Net Earnings (Losses)	$ 0	$ 0