Other Accrued Liabilities - Summary of Other Accrued Liabilities (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Other Liabilities Disclosure [Abstract]
Self insurance	$ 4.0	$ 3.7
Sales incentive programs	6.8	7.4
Short-term environmental	1.1	1.1
Other accruals	3.8	3.6
Other accrued liabilities	$ 15.7	$ 15.8