GOODWILL AND OTHER INTANGIBLE ASSETS - Carrying Values of Other Intangible Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Intangible Assets By Major Class [Line Items]
Gross Carrying Amount	$ 2,133,541	$ 1,993,586
Accumulated Amortization	271,568	151,025
Net Value	1,861,973	1,842,561	$ 909,645
Operating permits
Intangible Assets By Major Class [Line Items]
Carrying Amount, Indefinite Lived Intangible Assets	229,396	233,101
Tradenames
Intangible Assets By Major Class [Line Items]
Carrying Amount, Indefinite Lived Intangible Assets	316,472	426,498
Customer relationships
Intangible Assets By Major Class [Line Items]
Gross Carrying Amount	1,553,398	1,304,388
Accumulated Amortization	261,306	144,020
Net Value	1,292,092	1,160,368
Covenants not-to-compete
Intangible Assets By Major Class [Line Items]
Gross Carrying Amount	9,491	6,878
Accumulated Amortization	6,371	5,141
Net Value	3,120	1,737
Tradenames
Intangible Assets By Major Class [Line Items]
Gross Carrying Amount	5,708	3,819
Accumulated Amortization	1,365	948
Net Value	4,343	2,871
Other
Intangible Assets By Major Class [Line Items]
Gross Carrying Amount	19,076	18,902
Accumulated Amortization	2,526	916
Net Value	$ 16,550	$ 17,986