Business Segment Information - Schedule of Assets and Long Lived Assets Segment (Detail) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Segment Reporting Information
Assets	$ 2,024.0	$ 2,035.1
Continuing Operations | Operating segments | Sealing Products
Segment Reporting Information
Assets	1,255.4	1,316.5
Continuing Operations | Operating segments | Engineered Products
Segment Reporting Information
Assets	253.6	259.4
Continuing Operations | Corporate
Segment Reporting Information
Assets	515.0	205.1
Discontinued operations
Segment Reporting Information
Assets	$ 0.0	$ 254.1