CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) - shares	12 Months Ended
	Dec. 27, 2015	Dec. 28, 2014	Dec. 29, 2013
Treasury Stock, Shares, Acquired	6,494,482	1,594,115	580,219
Treasury Stock, Shares, Retired	4,887,691	1,559,948	575,046
Common Class A
Stock Issued During Period, Shares, Employee Stock Purchase Plans	915,550	2,391,100	1,030,750
Stock Issued During Period, Shares, Conversion of Convertible Securities	154,000	215,000