CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares	9 Months Ended
	Sep. 30, 2017	Sep. 24, 2016
Increase (Decrease) in Stockholders' Equity
Cash dividends per share (USD per share)	$ 0.450	$ 0.420
Issuance of shares under employee stock plans (in shares)	5,975	5,195
Issuance of shares under stock grant programs (in shares)	142,775	133,293
Issuance of shares under deferred compensation plans (in shares)	49,160	50,742
Repurchase of shares (in shares)	148,580