CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Statement of Stockholders' Equity [Abstract]
Cash dividends declared per share (in dollars per share)	$ 0.45	$ 0.375	$ 1.35	$ 1.125
Purchase of treasury shares, shares acquired (in shares)	60,645	126,734	251,136	433,463
Stock plan exercises; shares acquired (in shares)	580	4,403	617	10,499
Stock options exercised; shares issued (in shares)	2,616	12,586	4,100	28,493
Stock awards; shares issued (in shares)	253	223	8,957	10,550
Accounting Standards Update [Extensible List]				us-gaap:AccountingStandardsUpdate201602Member