(Schedule of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	$ (4,342)	$ (4,739)
Balance at end of period	(1,666)	(4,342)	$ (4,739)
Defined Benefit Pension and Postretirement Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	(1,880)	(2,277)	(1,916)
Other comprehensive income (loss) before reclassifications	713	227	2
Reclassification of stranded tax effects	0	0	(527)
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent	80	0	0
Amounts reclassified from accumulated other comprehensive income	125	170	164
Balance at end of period	(962)	(1,880)	(2,277)
Change in Cumulative Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	(2,457)	(2,465)	(2,581)
Other comprehensive income (loss) before reclassifications	(115)	(319)	14
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent	1,692	0	0
Amounts reclassified from accumulated other comprehensive income	184	327	102
Other Comprehensive Income (Loss) Attributable to Noncontrolling Interest	2	0	0
Balance at end of period	(694)	(2,457)	(2,465)
Net Gains and Losses on Cash Flow Hedging Derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	(5)	3	(3)
Other comprehensive income (loss) before reclassifications	3	(34)	4
Reclassification of stranded tax effects	0	0	(2)
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent	1	0	0
Amounts reclassified from accumulated other comprehensive income	(9)	26	4
Balance at end of period	$ (10)	$ (5)	$ 3