Earnings Per Share - Computations of Earnings per Common Share (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023
Earnings Per Share [Abstract]
Income from continuing operations, net of tax	$ 133.9	$ 102.1	$ 230.2	$ 187.7
(Loss) income from discontinued operations, net of tax	0.0	0.0	0.0	(1.0)
Net income	$ 133.9	$ 102.1	$ 230.2	$ 186.7
Continuing operations	$ 1.07	$ 0.81	$ 1.83	$ 1.47
Discontinued operations	0	0	0	0
Basic earnings per share	1.07	0.81	1.83	1.47
Continuing operations	1.06	0.8	1.82	1.47
Discontinued operations	0	0	0	(0.01)
Diluted earnings per share	$ 1.06	$ 0.8	$ 1.82	$ 1.46
Basic average shares outstanding	125.1	126.8	125.5	127.3
Stock-based awards	0.7	0.7	0.9	0.7
Diluted average shares outstanding	125.8	127.5	126.4	128.0
Antidilutive stock-based awards excluded from weighted- average number of shares outstanding for diluted earnings per share	1.3	1.0	0.8	1.0