OTHER CURRENT AND NON-CURRENT ASSETS - Components of Other Current and Non-Current Assets (Detail) - USD ($) $ in Millions	Sep. 30, 2018	Jan. 01, 2018	Dec. 31, 2017	Sep. 30, 2017
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Asbestos-related assets	$ 67.1		$ 64.7	$ 64.7
Advance payments and other prepaid expenses	43.4		50.9
Short-term contract asset (see Note 2)	21.3	$ 43.2	0.0
Prepaid income taxes	18.8		30.3
Other	1.2		1.5
Other current assets	151.8		147.4
Other employee benefit-related assets	118.8		111.3
Capitalized software costs	35.2		41.9
Environmental-related assets	23.3		24.5
Equity method investments	8.0		6.7
Other	20.5		18.5
Other non-current assets	$ 205.8		$ 202.9