FAIR VALUE MEASUREMENTS - Summary of Financial Assets and Liabilities Carried at Fair Value on Recurring Basis (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Assets:
Derivative financial instruments	$ 0.4	$ 0.8
Total assets	0.4	0.8
Liabilities:
Contingent consideration	12.4	24.1
Total liabilities	12.4	24.1
Level 1 Inputs [Member]
Assets:
Derivative financial instruments	0.0	0.0
Total assets	0.0	0.0
Liabilities:
Contingent consideration	0.0	0.0
Total liabilities	0.0	0.0
Level 2 Inputs [Member]
Assets:
Derivative financial instruments	0.4	0.8
Total assets	0.4	0.8
Liabilities:
Contingent consideration	0.0	0.0
Total liabilities	0.0	0.0
Level 3 Inputs [Member]
Assets:
Derivative financial instruments	0.0	0.0
Total assets	0.0	0.0
Liabilities:
Contingent consideration	12.4	24.1
Total liabilities	$ 12.4	$ 24.1