ACQUISITIONS - Purchase Price Allocation (Detail) $ in Millions	Sep. 30, 2018 USD ($)
Business Acquisition [Line Items]
Fixed assets	$ 6.5
Intangibles	23.3
Goodwill	34.7
Net other assets and liabilities	2.8
Total purchase price allocation	67.3
Current Period Acquisitions
Business Acquisition [Line Items]
Fixed assets	1.8
Intangibles	22.7
Goodwill	42.0
Net other assets and liabilities	1.2
Total purchase price allocation	67.7
Adjustments to Prior Year Acquisitions
Business Acquisition [Line Items]
Fixed assets	4.7
Intangibles	0.6
Goodwill	(7.3)
Net other assets and liabilities	1.6
Total purchase price allocation	$ (0.4)