Other Current and Non-Current Assets - Components of Other Current and Non-Current Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Asbestos-related assets	$ 67.2	$ 67.1
Advance payments and other prepaid expenses	45.4	44.5
Contract assets	18.0	21.8
Prepaid income taxes	20.6	19.6
Other	2.2	10.4
Other current assets	153.4	163.4
Other employee benefit-related assets	133.6	104.7
Operating lease right-of-use assets (see Note 2)	91.7	0.0
Capitalized software costs	30.1	35.3
Environmental-related assets	22.2	23.4
Equity method investments	9.8	7.7
Other	29.1	25.7
Other non-current assets	$ 316.5	$ 196.8