Other Financial Data (Earnings (Loss) Per Common Share) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 29, 2014	Mar. 30, 2013
Basic earnings (loss) per common share:
Net earnings	$ 127	$ 192
Weighted average common shares outstanding, basic (shares)	254.1	274.5
Basic earnings per share amount (US$ per share)	$ 0.50	$ 0.70
Diluted earnings (loss) per common share:
Net earnings	$ 127	$ 192
Weighted average common shares outstanding, basic (shares)	254.1	274.5
Add effect of dilutive securities:
Share-based awards (in shares)	4.2	6.2
Diluted weighted average common shares outstanding (shares)	258.3	280.7
Diluted earnings per share amount (US$ per share)	$ 0.49	$ 0.68