Consolidated Statements Of Shareholders' Equity - 3 months ended Mar. 31, 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	396		393		3
Other comprehensive income (loss)	186			186	0
Total comprehensive income	582
Cash dividends paid - $0.335 per share	$ (190)		(190)
Stock compensation expense, shares	2
Stock compensation expense	$ 29	$ 29
Other, shares		0
Other	(6)	$ 1	0	0	(7)
Balance at Mar. 31, 2018	$ 18,737	$ 2,428	$ 17,755	$ (1,451)	$ 5
Balance (shares) at Mar. 31, 2018		559