Other Financial Data (Earnings (Loss) Per Common Share) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012
Basic earnings (loss) per common share:
Earnings from continuing operations	$ 307	$ 206	$ 757	$ 542
Net earnings	307	206	757	545
Weighted average common shares outstanding, basic (shares)	262.2	283.1	268.7	296.1
Basic earnings per common share (US$ per share)	$ 1.17	$ 0.73	$ 2.82	$ 1.83
Basic earnings per share amount (US$ per share)	$ 1.17	$ 0.73	$ 2.82	$ 1.84
Diluted earnings (loss) per common share:
Earnings from continuing operations	307	206	757	542
Net earnings	$ 307	$ 206	$ 757	$ 545
Weighted average common shares outstanding, basic (shares)	262.2	283.1	268.7	296.1
Add effect of dilutive securities:
Share-based awards (in shares)	3.1	4.3	4.8	5.4
Diluted weighted average common shares outstanding (shares)	265.3	287.4	273.5	301.5
Diluted earnings per common share (US$ per share)	$ 1.16	$ 0.72	$ 2.77	$ 1.80
Diluted earnings per share amount (US$ per share)	$ 1.16	$ 0.72	$ 2.77	$ 1.81