Consolidated Statements Of Stockholders' Equity (Unaudited) (Parentheticals) - $ / shares	3 Months Ended
	Apr. 04, 2021	Mar. 29, 2020
Regular dividends per share (in dollars per share)	$ 1.00	$ 1.00
Extra dividends per share (in dollars per share)	$ 5.25	$ 5.00