Consolidated Statements Of Shareholders' Equity - 9 months ended Sep. 30, 2018 - USD ($) shares in Millions, $ in Millions	Total	Common Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interests [Member]
Balance (Scenario, Previously Reported [Member]) at Dec. 31, 2017	$ 18,322	$ 2,398	$ 17,552	$ (1,637)	$ 9
Balance at Dec. 31, 2017	18,322
Balance (shares) (Scenario, Previously Reported [Member]) at Dec. 31, 2017		557
Comprehensive income
Net earnings including noncontrolling interests	1,498		1,495		3
Other comprehensive income (loss)	(395)			(395)	0
Total comprehensive income	1,103
Cash dividends paid - $1.005 per share	(568)		(568)
Stock compensation expense, shares		1
Stock compensation expense	88	$ 88
Other, shares		2
Other	55	$ 55	(1)	0	1
Balance at Sep. 30, 2018	$ 19,000	$ 2,541	$ 18,478	$ (2,032)	$ 13
Balance (shares) at Sep. 30, 2018		560