Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Jun. 29, 2013	Dec. 29, 2012
Statement of Financial Position [Abstract]
Accounts receivable allowance for doubtful accounts	$ 44	$ 47
Preferred stock, par value	$ 1	$ 1
Preferred stock, shares authorized	25,000,000	25,000,000
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.1	$ 0.1
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	284,535,826	295,648,327
Common stock, shares outstanding	284,535,826	295,648,327