Consolidated Statements Of Shareholders' Equity - 6 months ended Jun. 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	962		959		3
Other comprehensive income (loss)	(274)			(274)	0
Total comprehensive income	688
Cash dividends paid - $0.67 per share	(379)		(379)
Stock compensation expense, shares		1
Stock compensation expense	63	$ 63
Other, shares		1
Other	18	$ 28	0	0	(10)
Balance at Jun. 30, 2018	$ 18,712	$ 2,489	$ 18,132	$ (1,911)	$ 2
Balance (shares) at Jun. 30, 2018		559