Accumulated Other Comprehensive Loss (Summary of Changes in AOCI) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (1,989)	$ (2,115)	$ (2,018)	$ (1,915)
Other comprehensive (loss) income before reclassifications, net - Foreign Currency Translation	122	(242)
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment and Tax	(4)	(11)
Other comprehensive (loss) income before reclassifications, net - Unrealized Hedging Gains (Losses)	(27)	31
Other comprehensive (loss) income before reclassifications, net	91	(222)
Amounts reclassified, pretax - Foreign Currency Translation	0	2
Amounts reclassified, pretax - Pension	(142)	32
Amounts reclassified, pretax - Unrealized Hedging Gains (Losses)	39	6
Amounts reclassified, pre-tax	(103)	40
Tax benefit (expense) - Foreign Currency Translation	1	(3)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax	38	(4)
Tax benefit (expense) - Unrealized Hedging Gains (Losses)	2	(11)
Income tax (expense) benefit related to items of other comprehensive income (loss)	41	(18)
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(882)	(194)	(1,005)	49
Defined Benefit Pension and Post-retirement Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(890)	(1,811)	(782)	(1,828)
Unrealized hedging (losses) gains
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (217)	$ (110)	$ (231)	$ (136)