Condensed Consolidated Statements Of Stockholders' Equity (Unaudited) (USD $) In Millions, unless otherwise specified	Total	Common Stock and Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings	Noncontrolling Interests
Balance at Dec. 31, 2013	$ 3,689	$ 3,521	$ (2,287)	$ 2,425	$ 30
Balance (in shares) at Dec. 31, 2013		255.5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	127
Net unrealized gains on securities, net of tax of $(2)	2		2
Foreign currency translation adjustments, net of tax of $1	2		2
Amortization of retirement benefit adjustments, net of tax of $6	(13)		13
Issuance of common stock and stock options exercised		9
Issuance of common stock and stock options exercised (in shares)		0.7
Share repurchase program		(57)
Share repurchase program (in shares)		(0.9)
Excess tax benefit from share-based compensation		5
Share-based compensation expense		36
Dividends declared				(79)
Balance at Mar. 29, 2014	$ 3,747	$ 3,514	$ (2,270)	$ 2,473	$ 30
Balance (in shares) at Mar. 29, 2014		255.3