Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Jun. 28, 2014	Dec. 28, 2013
Accounts receivable allowance for doubtful accounts	$ 51	$ 45
Preferred stock, par value	$ 1.00	$ 1.00
Preferred stock, shares authorized	25,000,000	25,000,000
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.10	$ 0.10
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	284,564,301	289,117,352
Common stock, shares outstanding	284,564,301	289,117,352