CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 26, 2021	Jun. 27, 2020	Jun. 26, 2021	Jun. 27, 2020
Statement of Stockholders' Equity [Abstract]
Cash dividends declared per share (in dollars per share)	$ 0.50	$ 0.45	$ 1.00	$ 0.90
Purchase of treasury shares, shares acquired (in shares)	42,150	14	92,297	190,491
Stock plan exercises; shares acquired (in shares)	63,783		71,268	37
Stock options exercised; shares issued (in shares)	1,245	318	144,123	1,484
Stock awards; shares issued (in shares)	6,351	6,204	9,060	8,704