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	Previously Reported	Previously Reported Common Stock	Previously Reported Additional Paid-In Capital	Previously Reported Treasury Stock	Previously Reported Accumulated Other Comprehensive Loss	Previously Reported Non-Controlling Interest
Balance at Dec. 31, 2018	$ 410	$ 5,061	$ 6,768	$ (52,348)	$ 55,941	$ (15,083)	$ 71
Net (loss)/earnings	2,149				2,149
Other comprehensive income, net of tax of ($30) in 2019 and ($29) in 2020	114					114
Share-based compensation and related dividend equivalents	47		47
Treasury shares issued for stock options exercised, net	41		(36)	77
Treasury shares issued for other share-based plans, net	(224)		(206)	(18)
Common shares repurchased	(2,341)			(2,341)
Changes in noncontrolling interests	36						36
Balance at Mar. 31, 2019	232	5,061	6,573	(54,630)	58,090	(14,969)	107
Balance at Dec. 31, 2019	(8,300)				50,644			$ (8,300)	$ 5,061	$ 6,745	$ (54,914)	$ (16,153)	$ 317
Net (loss)/earnings	(641)				(628)		(13)
Other comprehensive income, net of tax of ($30) in 2019 and ($29) in 2020	(180)					(180)
Share-based compensation and related dividend equivalents	55		55
Treasury shares issued for stock options exercised, net	20		(16)	36
Treasury shares issued for other share-based plans, net	(153)		(189)	36
Changes in noncontrolling interests	1						1
Balance at Mar. 31, 2020	$ (9,360)	$ 5,061	$ 6,595	$ (54,842)	$ 49,854	$ (16,333)	$ 305