Equity (Earnings per Share) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 29, 2013	Jun. 30, 2012	Jun. 29, 2013	Jun. 30, 2012
Equity [Abstract]
Net income, basic	$ 352	$ 324	$ 663	$ 675
Average shares outstanding, basic	364	357	364	357
Net earnings per share, basic	$ 0.96	$ 0.91	$ 1.82	$ 1.89
Average shares outstanding, dilutive potential common shares	3	2	2	2
Net earnings per share, dilutive potential common shares	$ 0	$ (0.01)	$ (0.01)	$ (0.01)
Net income, diluted	$ 352	$ 324	$ 663	$ 675
Average shares outstanding, diluted	367	359	366	359
Net earnings per share, diluted	$ 0.96	$ 0.90	$ 1.81	$ 1.88