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]
Cumulative Effect of New Accounting Principle in Period of Adoption | Restatement Adjustment [Member]		$ (53)	$ 53
Balance (Scenario, Previously Reported [Member]) at Dec. 31, 2015	$ 17,915	3,180	16,865	$ (2,146)	$ 16
Balance at Dec. 31, 2015	17,915	$ 3,127	16,918	(2,146)	16
Balance (shares) (Scenario, Previously Reported [Member]) at Dec. 31, 2015		595
Balance (shares) at Dec. 31, 2015		595
Comprehensive income
Net earnings	230		230		0
Other comprehensive income (loss)	199			199	0
Total comprehensive income	429
Cash dividends paid - $0.30 per share	(177)		(177)
Treasury stock purchases, shares		(9)
Treasury stock purchases	$ (296)	$ (296)
Stock compensation expense, shares	1
Stock compensation expense	$ 28	$ 28
Other, shares		0
Other	14	$ 16	0	0	(2)
Balance at Mar. 31, 2016	$ 17,913	$ 2,875	$ 16,971	$ (1,947)	$ 14
Balance (shares) at Mar. 31, 2016		587