GOODWILL AND OTHER INTANGIBLE ASSETS - Changes in Carrying Amount of Intangible Assets (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Finite-lived and Indefinite-lived Intangible Assets [Roll Forward]
Beginning of period			$ 1,791.5	$ 1,862.0	$ 1,862.0
Intangible assets acquired during the year			17.2		28.2
Valuation adjustments for prior year acquisitions			0.6		7.9
Write-offs due to disposition and amounts reclassified to assets held for sale			(14.9)		(2.6)
Impairments during the year			(5.2)		(21.0)
Amortization during the year	$ (32.9)	$ (29.5)	(64.8)	$ (58.6)	(118.4)
Changes due to foreign currency fluctuations			(25.7)		35.4
End of period	$ 1,698.7		$ 1,698.7		$ 1,791.5