GOODWILL AND OTHER INTANGIBLE ASSETS - Summary of Allocation of Acquisition Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Acquired Finite Lived Intangible Assets
Goodwill	$ 2,359,674	$ 838,428	$ 840,117
Amortizable intangibles, Gross carrying amount	1,434,034	612,847
Amortizable intangibles, Accumulated Amortization	381,541	290,779
Customer related intangibles
Acquired Finite Lived Intangible Assets
Amortizable intangibles, Gross carrying amount	$ 949,844	$ 322,619
Amortizable intangibles, Weighted Average Amortization Period	21 years	16 years
Amortizable intangibles, Accumulated Amortization	$ 157,077	$ 116,609
Acquired software
Acquired Finite Lived Intangible Assets
Amortizable intangibles, Gross carrying amount	$ 433,800	$ 262,286
Amortizable intangibles, Weighted Average Amortization Period	7 years	7 years
Amortizable intangibles, Accumulated Amortization	$ 208,451	$ 162,378
Trade names
Acquired Finite Lived Intangible Assets
Amortizable intangibles, Gross carrying amount	$ 45,353	$ 22,905
Amortizable intangibles, Weighted Average Amortization Period	10 years	11 years
Amortizable intangibles, Accumulated Amortization	$ 13,064	$ 9,366
Leases acquired
Acquired Finite Lived Intangible Assets
Amortizable intangibles, Gross carrying amount	$ 5,037	$ 5,037
Amortizable intangibles, Weighted Average Amortization Period	9 years	9 years
Amortizable intangibles, Accumulated Amortization	$ 2,949	$ 2,426