Consolidated Statements Of Shareholders' Equity - USD ($) $ in Millions	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Reclassification out of Accumulated Other Comprehensive Income [Member]
Balance at beginning of period at Dec. 31, 2013	$ 9,047	$ 38	$ 1,160	$ 7,617	$ 232
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	515
Other comprehensive loss	(486)				(486)
Issuance of shares of common stock under stock option and benefit plans, including excess income tax benefit	19		19
Repurchase and retirement of shares of common stock	(100)		(4)	(96)
Share-based compensation	77		77
Cash dividends declared of common stock	(477)			(477)
Balance at end of period at Dec. 31, 2014	8,595	38	1,252	7,559	(254)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	1,439
Other comprehensive loss	(385)				(385)	$ (385)
Issuance of shares of common stock under stock option and benefit plans, including excess income tax benefit	8		8
Repurchase and retirement of shares of common stock	(700)	(1)	(25)	(674)
Share-based compensation	86		86
Cash dividends declared of common stock	(532)			(532)
Balance at end of period at Dec. 31, 2015	8,511	37	1,321	7,792	(639)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	1,647
Other comprehensive loss	(122)				(122)	$ (122)
Issuance of shares of common stock under stock option and benefit plans, including excess income tax benefit	15		15
Repurchase and retirement of shares of common stock	(13)		(1)	(12)
Share-based compensation	97		97
Cash dividends declared of common stock	(585)			(585)
Balance at end of period at Dec. 31, 2016	$ 9,550	$ 37	$ 1,432	$ 8,842	$ (761)