Net Earnings Per Share - Dividends Declared and Paid (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Apr. 02, 2021	Mar. 27, 2020
Earnings Per Share [Abstract]
Dividend per common share (in dollars per share)	$ 0.07	$ 0.07
Amount, common shares	$ 23.7	$ 23.5
Dividend per MCPS (in dollars per share)	$ 12.50	$ 12.50
Amount, MCPS	$ 17.3	$ 17.3