Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 26, 2015	Dec. 27, 2014
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	1,500,000,000	1,500,000,000
Common stock, shares issued	806,000,000	788,000,000
Common stock, shares outstanding	792,000,000	776,000,000
Treasury stock, shares	14,000,000	12,000,000