Equity (Earnings per Share) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Apr. 02, 2011
Equity [Abstract]
Net income, basic	$ 358	$ 366
Average shares outstanding, basic	357	365
Net earnings per share, basic	$ 1.00	$ 1.00
Average shares outstanding, dilutive potential common shares	2	3
Net earnings per share, dilutive potential common shares	$ 0	$ 0
Net income, diluted	$ 358	$ 366
Average shares outstanding, diluted	359	368
Net earnings per share, diluted	$ 1.00	$ 1.00