Net Income Per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Oct. 01, 2022	Sep. 30, 2023	Oct. 01, 2022
Net Income Per Common Share
Net income	$ 138.3	$ 221.5	$ 359.9	$ 634.2
Weighted average number of common shares outstanding (in shares)	80.6	81.2	80.7	81.8
Dilutive shares (additional common shares issuable under stock-based awards) (in shares)	0.4	0.7	0.5	0.6
Weighted average number of common shares outstanding, assuming dilution (in shares)	81.0	81.9	81.2	82.4
Net income per common share (in dollars per share)	$ 1.72	$ 2.73	$ 4.46	$ 7.75
Net income per common share, assuming dilution (in dollars per share)	$ 1.71	$ 2.70	$ 4.43	$ 7.70
Antidilutive securities excluded from computation of earnings per share (in shares)	0.0	0.0	0.1	0.0