GOODWILL AND OTHER INTANGIBLE ASSETS - Intangible Assets (Detail) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Intangible Assets By Major Class [Line Items]
Gross Carrying Amount	$ 1,739.0	$ 2,007.3
Accumulated Amortization	550.4	584.9
Net Value	1,188.6	1,422.4
Operating permits
Intangible Assets By Major Class [Line Items]
Carrying Amount, Indefinite Lived Intangible Assets	89.0	211.1
Tradenames
Intangible Assets By Major Class [Line Items]
Carrying Amount, Indefinite Lived Intangible Assets	308.8	314.2
Customer relationships
Intangible Assets By Major Class [Line Items]
Gross Carrying Amount	1,321.4	1,460.8
Accumulated Amortization	541.0	575.8
Net Value	780.4	885.0
Covenants not-to-compete
Intangible Assets By Major Class [Line Items]
Gross Carrying Amount	3.5	4.9
Accumulated Amortization	2.7	3.8
Net Value	0.8	1.1
Tradenames
Intangible Assets By Major Class [Line Items]
Gross Carrying Amount	3.5	4.1
Accumulated Amortization	1.1	1.6
Net Value	2.4	2.5
Operating permits
Intangible Assets By Major Class [Line Items]
Gross Carrying Amount	4.1	3.6
Accumulated Amortization	2.8	1.1
Net Value	1.3	2.5
Other
Intangible Assets By Major Class [Line Items]
Gross Carrying Amount	8.7	8.6
Accumulated Amortization	2.8	2.6
Net Value	$ 5.9	$ 6.0