Revenue Recognition - Disaggregates Revenue for Each Reportable Segment and Geographic Region (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disaggregation Of Revenue [Line Items]
Net sales	$ 1,945.5	$ 1,899.8	$ 1,726.0
North America (primarily U.S.) [Member]
Disaggregation Of Revenue [Line Items]
Net sales	1,124.2	1,018.3	914.9
Europe Excluding Germany [Member]
Disaggregation Of Revenue [Line Items]
Net sales	344.8	341.9	289.3
Germany [Member]
Disaggregation Of Revenue [Line Items]
Net sales	209.5	200.0	185.8
China [Member]
Disaggregation Of Revenue [Line Items]
Net sales	148.0	222.9	222.5
Asia And Other (Excluding China) [Member]
Disaggregation Of Revenue [Line Items]
Net sales	119.0	116.7	113.5
Operating Segments [Member] | Power Transmission Technologies [Member]
Disaggregation Of Revenue [Line Items]
Net sales	985.6	924.8	818.6
Operating Segments [Member] | Automation & Specialty [Member]
Disaggregation Of Revenue [Line Items]
Net sales	965.5	979.0	911.8
Intersegment Eliminations [Member]
Disaggregation Of Revenue [Line Items]
Net sales	$ (5.6)	$ (4.0)	$ (4.4)