(Pension Benefit Adjustments Recognized In Other Comprehensive (Loss) Income) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($)
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Current year actuarial (gain) loss	$ (961)
Amortization of actuarial (loss) gain	(138)
Current year prior service cost	(2)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax	22
Other Comprehensive Income, Other, Net of Tax	0
Total recognized in other comprehensive income	(1,123)
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Current year actuarial (gain) loss	(8)
Amortization of actuarial (loss) gain	(2)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax	0
Other Comprehensive Income, Other, Net of Tax	67
Effect of foreign currency exchange rate movements	(1)
Total recognized in other comprehensive income	$ (78)