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GOODWILL (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Goodwill [Line Items]
Goodwill	$ 3,199,494		$ 3,187,169
Goodwill, Foreign Currency Translation Gain (Loss)	11,736
Goodwill, Acquired During Period	589
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	2,330,448		2,326,919
Finite-Lived Intangible Assets, Accumulated Amortization	(284,456)		(261,424)
Finite-Lived Intangible Assets, Net	2,045,992		2,065,495
Finite-Lived Intangible Asset, Expected Amortization, Year One	65,703
Finite-Lived Intangible Asset, Expected Amortization, Year Two	84,318
Finite-Lived Intangible Asset, Expected Amortization, Year Three	83,410
Finite-Lived Intangible Asset, Expected Amortization, Year Four	80,767
Finite-Lived Intangible Asset, Expected Amortization, Year Five	77,501
Finite-Lived Intangible Asset, Expected Amortization, after Year Five	819,867
Amortization of Intangible Assets	21,600	$ 8,500
Finite-Lived Intangible Asset, Expected Amortization, Year Three	83,410
Finite-Lived Intangible Asset, Expected Amortization, Year Four	80,767
Finite-Lived Intangible Asset, Expected Amortization, Year Five	77,501
Finite-Lived Intangible Asset, Expected Amortization, after Year Five	819,867
Disposal Group, Including Discontinued Operation, Goodwill, Current			26,100
Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	24,899		24,898
Finite-Lived Intangible Assets, Accumulated Amortization	(11,914)		(11,415)
Finite-Lived Intangible Assets, Net	$ 12,985		13,483
Disposal Group, Including Discontinued Operation, Intangible Assets			1,000
Disposal Group, Including Discontinued Operation, Intangible Assets			1,000
Trademarks [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	10 years
Trademarks [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	15 years
Noncompete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 4,422		4,462
Finite-Lived Intangible Assets, Accumulated Amortization	(1,902)		(1,384)
Finite-Lived Intangible Assets, Net	$ 2,520		3,078
Noncompete Agreements [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	2 years
Noncompete Agreements [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	5 years
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 1,437,489		1,434,554
Finite-Lived Intangible Assets, Accumulated Amortization	(249,177)		(227,585)
Finite-Lived Intangible Assets, Net	$ 1,188,312		1,206,969
Disposal Group, Including Discontinued Operation, Intangible Assets			3,300
Disposal Group, Including Discontinued Operation, Intangible Assets			3,300
Customer Relationships [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	10 years
Customer Relationships [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	20 years
Distribution Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 29,212		29,212
Finite-Lived Intangible Assets, Accumulated Amortization	(21,463)		(21,040)
Finite-Lived Intangible Assets, Net	$ 7,749		8,172
Disposal Group, Including Discontinued Operation, Intangible Assets			1,400
Disposal Group, Including Discontinued Operation, Intangible Assets			1,400
Distribution Rights [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	10 years
Distribution Rights [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	19 years
EES
Goodwill [Line Items]
Goodwill	$ 857,804		853,456
Goodwill, Foreign Currency Translation Gain (Loss)	6,638
Goodwill, Acquired During Period	(2,290)
CSS
Goodwill [Line Items]
Goodwill	1,120,069		1,115,500
Goodwill, Foreign Currency Translation Gain (Loss)	3,831
Goodwill, Acquired During Period	738
UBS
Goodwill [Line Items]
Goodwill	1,221,621		1,218,213
Goodwill, Foreign Currency Translation Gain (Loss)	(952)
Goodwill, Acquired During Period	4,360
Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets (Excluding Goodwill)	$ 834,426		$ 833,793

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