Segments, Concentrations and Geographic Information - Segment Financial Information and Reconciliation of Segments Revenue to Unaudited Condensed Consolidated Revenue (Detail) - USD ($) $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 466.3			$ 469.3			$ 1,476.1	$ 1,430.0
Income from operations	58.5			61.8			189.8	192.4
Restructuring costs	(3.9)	$ (0.5)	$ (0.4)	(0.7)	$ (0.8)	$ (0.9)	(4.8)	(2.4)
Net interest expense	13.7			16.1			36.8	49.5
Other non-operating (income) expense, net	(0.7)			0.1			(2.7)	(3.1)
Total other non-operating (income) expense, net	13.0			16.2			34.1	46.4
Income before income taxes	45.5			45.6			155.7	146.0
Provision for income taxes	11.9			10.2			51.0	30.6
Net income	33.6			35.4			104.7	115.4
Operating Segments [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Restructuring costs	(3.9)			(0.7)			(4.8)	(2.4)
Operating Segments [Member] | Power Transmission Technologies [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	239.3			232.5			745.5	691.1
Income from operations	34.3			36.5			104.1	97.9
Restructuring costs	(3.9)			(0.4)			(4.1)	(1.4)
Operating Segments [Member] | Automation & Specialty [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	228.6			237.8			735.1	741.9
Income from operations	33.5			30.6			101.2	109.4
Restructuring costs				(0.3)			(0.7)	(1.0)
Intersegment Eliminations [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	(1.6)			(1.0)			(4.5)	(3.0)
Corporate Expenses [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Income from operations	$ 5.4			$ (4.6)			$ (10.7)	$ (12.5)