CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 25, 2016	Sep. 27, 2015	Sep. 25, 2016	Sep. 27, 2015
Statement of Stockholders' Equity [Abstract]
Dividends per share (in dollars per share)	$ 0.34	$ 0.34	$ 1.02	$ 1.02