CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 27, 2020	Jun. 29, 2019	Jun. 27, 2020	Jun. 29, 2019
Statement of Stockholders' Equity [Abstract]
Cash dividends declared per share (in dollars per share)	$ 0.45	$ 0.375	$ 0.90	$ 0.75
Purchase of treasury shares, shares acquired (in shares)		236,323	190,491	306,729
Stock plan exercises; shares acquired (in shares)	14	645	37	6,096
Stock options exercised; shares issued (in shares)	318	2,642	1,484	15,637
Stock awards; shares issued (in shares)	6,204	2,692	8,704	10,327
Accounting Standards Update [Extensible List]				us-gaap:AccountingStandardsUpdate201602Member