Goodwill and Intangible Assets - Changes in Goodwill (Detail) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2022	Dec. 31, 2021
Goodwill [Roll Forward]
Goodwill		$ 1,794.9
Accumulated impairment loss		(230.9)
Goodwill, Beginning balance	$ 1,564.0
Measurement period adjustments related to the Nook acquisition	(0.6)
Impact of changes in foreign currency	(42.5)
Goodwill	1,520.9
Power Transmission Technologies [Member]
Goodwill [Roll Forward]
Goodwill		442.8
Accumulated impairment loss		(31.8)
Goodwill, Beginning balance	411.0
Impact of changes in foreign currency	(9.7)
Goodwill	401.3
Automation & Specialty [Member]
Goodwill [Roll Forward]
Goodwill		1,352.1
Accumulated impairment loss		$ (199.1)
Goodwill, Beginning balance	1,153.0
Measurement period adjustments related to the Nook acquisition	(0.6)
Impact of changes in foreign currency	(32.8)
Goodwill	$ 1,119.6