GOODWILL AND OTHER INTANGIBLE ASSETS - Carrying Values of Other Intangible Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Intangible Assets By Major Class [Line Items]
Gross Carrying Amount	$ 2,137.6	$ 2,184.0
Accumulated Amortization	499.9	392.5
Net Value	1,637.7	1,791.5	$ 1,862.0
Operating permits
Intangible Assets By Major Class [Line Items]
Carrying Amount, Indefinite Lived Intangible Assets	212.5	222.3
Tradenames
Intangible Assets By Major Class [Line Items]
Carrying Amount, Indefinite Lived Intangible Assets	312.3	317.4
Customer relationships
Intangible Assets By Major Class [Line Items]
Gross Carrying Amount	1,591.5	1,613.4
Accumulated Amortization	492.0	381.4
Net Value	1,099.5	1,232.0
Covenants not-to-compete
Intangible Assets By Major Class [Line Items]
Gross Carrying Amount	5.1	7.9
Accumulated Amortization	3.2	5.9
Net Value	1.9	2.0
Tradenames
Intangible Assets By Major Class [Line Items]
Gross Carrying Amount	3.9	6.0
Accumulated Amortization	1.2	1.8
Net Value	2.7	4.2
Other
Intangible Assets By Major Class [Line Items]
Gross Carrying Amount	12.3	17.0
Accumulated Amortization	3.5	3.4
Net Value	$ 8.8	$ 13.6