Consolidated Statements Of Shareholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interests [Member]	Previously Reported [Member]	Previously Reported [Member] Retained Earnings [Member]
Balance at Dec. 31, 2018	$ 18,996	$ 2,560	$ 18,527	$ (2,106)	$ 15
Balance (shares) at Dec. 31, 2018		559
Comprehensive income
Net earnings including noncontrolling interests	234		233		1
Other comprehensive income (loss)	(136)			(136)	0
Total comprehensive income	$ 98
Common Stock, Dividends, Per Share, Cash Paid	$ 0.35
Cash dividends paid	$ (198)		(198)
Stock compensation expense, shares	1
Stock compensation expense	$ 43	$ 43
Other, shares		0
Other	(29)	$ (19)	(9)	0	(1)
Balance at Mar. 31, 2019	18,910	$ 2,584	18,553	(2,242)	15
Balance (shares) at Mar. 31, 2019		560
Cumulative Effect of New Accounting Principle in Period of Adoption	(8)		(8)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance	19,217	$ 2,655	18,950	(2,405)	17
Balance at Dec. 31, 2019	19,225	$ 2,655		(2,405)	17	$ 19,225	$ 18,958
Balance (shares) at Dec. 31, 2019		557
Comprehensive income
Net earnings including noncontrolling interests	391		391		0
Other comprehensive income (loss)	(355)			(359)	4
Total comprehensive income	$ 36
Common Stock, Dividends, Per Share, Cash Paid	$ 0.36
Cash dividends paid	$ (203)		(203)
Stock Repurchased During Period, Value	(112)		(112)
Stock Repurchased During Period, Shares		(3)
Stock compensation expense, shares		1
Stock compensation expense	51	$ 51
Other, shares
Other	(13)	$ (16)	0		3
Balance at Mar. 31, 2020	$ 18,976	$ 2,690	$ 19,026	$ (2,764)	$ 24
Balance (shares) at Mar. 31, 2020		555