Goodwill and Intangible Assets - Changes in Goodwill (Detail) - USD ($) $ in Millions	9 Months Ended
	Sep. 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	(0.1)
Impact of changes in foreign currency	(72.6)
Goodwill	1,491.3
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	(17.1)
Goodwill	393.9
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	(0.1)
Impact of changes in foreign currency	(55.5)
Goodwill	$ 1,097.4