Condensed Consolidated Statements Of Equity - USD ($) $ in Millions	Total	Common Stock	Additional Paid-In Capital	Treasury Stock	Retained Earnings	Accumulated Other Comprehensive Loss	Non-Controlling Interest	Less: Noncontrolling Interest not presented on Income Statement [Member]
Balance at Dec. 31, 2018	$ 410	$ 5,061	$ 6,768	$ (52,348)	$ 55,941	$ (15,083)	$ 71
Net Income (Loss) Attributable to Parent	374				374
Net (loss)/earnings	374						(22)	$ 352
Less: net loss attributable to noncontrolling interest
Other comprehensive income, net of tax	156					156
Other Comprehensive Income, tax, portion attrib to parent	60
Share-based compensation and related dividend equivalents	160		176		(16)
Treasury shares issued for stock options exercised, net	40		(42)	82
Treasury shares issued for other share-based plans, net	(221)		(214)	(7)
Common shares repurchased	(2,651)			(2,651)
Dividends, Common Stock, Cash	$ (2,313)				(2,313)
Common Stock, Dividends, Per Share, Declared	$ 4.11
Changes in noncontrolling interests	$ 258						258
Balance at Sep. 30, 2019	(3,809)	5,061	6,688	(54,924)	53,986	(14,927)	307
Other Comprehensive Income (Loss), Tax	(60)
Balance at Jun. 30, 2019	(4,943)	5,061	6,638	(54,932)	52,819	(14,908)	379
Net Income (Loss) Attributable to Parent	1,167				1,167
Net (loss)/earnings	1,167						(15)	$ 1,152
Less: net loss attributable to noncontrolling interest
Other comprehensive income, net of tax	(19)					(19)
Other Comprehensive Income, tax, portion attrib to parent	12
Share-based compensation and related dividend equivalents	56		56
Treasury shares issued for stock options exercised, net	(3)		(3)
Treasury shares issued for other share-based plans, net	5		(3)	8
Changes in noncontrolling interests	(57)						(57)
Balance at Sep. 30, 2019	(3,809)	5,061	6,688	(54,924)	53,986	(14,927)	307
Other Comprehensive Income (Loss), Tax	(12)
Balance at Dec. 31, 2019	(8,300)	5,061	6,745	(54,914)	50,644	(16,153)	317
Net Income (Loss) Attributable to Parent	(3,453)
Net (loss)/earnings	(3,502)
Less: net loss attributable to noncontrolling interest	(49)
Other comprehensive income, net of tax	374					374
Other Comprehensive Income, tax, portion attrib to parent	118
Share-based compensation and related dividend equivalents	165		165
Treasury shares issued for stock options exercised, net	31		(22)	53
Treasury shares issued for other share-based plans, net	(159)		(201)	42
Balance at Sep. 30, 2020	(11,553)	5,061	6,687	(54,819)	47,029	(15,779)	268
Other Comprehensive Income (Loss), Tax	(118)
Balance at Jun. 30, 2020	(11,382)	5,061	6,648	(54,829)	47,478	(16,025)	285
Net Income (Loss) Attributable to Parent	(449)
Net (loss)/earnings	(466)
Less: net loss attributable to noncontrolling interest	(17)
Other comprehensive income, net of tax	246					246
Other Comprehensive Income, tax, portion attrib to parent	79
Share-based compensation and related dividend equivalents	50		50
Treasury shares issued for stock options exercised, net	4		(2)	6
Treasury shares issued for other share-based plans, net	(5)		(9)	4
Balance at Sep. 30, 2020	(11,553)	$ 5,061	$ 6,687	$ (54,819)	$ 47,029	$ (15,779)	$ 268
Other Comprehensive Income (Loss), Tax	$ (79)