FAIR VALUE MEASUREMENTS - Summary of Financial Assets and Liabilities Carried at Fair Value on Recurring Basis (Detail) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Assets:
Derivative financial instruments	$ 0.2	$ 0.4
Total assets	0.2	0.4
Liabilities:
Contingent consideration	10.2	12.4
Total liabilities	10.2	12.4
Level 2 Inputs [Member]
Assets:
Derivative financial instruments	0.2	0.4
Total assets	0.2	0.4
Level 3 Inputs [Member]
Liabilities:
Contingent consideration	10.2	12.4
Total liabilities	$ 10.2	$ 12.4