Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Millions, $ in Millions	Dec. 26, 2015	Dec. 27, 2014
Current assets:
Accounts receivable allowance for doubtful accounts	$ 40	$ 38
Stockholders' equity:
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized	50	50
Preferred stock, shares issued	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	10,000	10,000
Common stock, shares issued	4,725	4,752
Common stock, shares outstanding	4,725	4,748