GOODWILL AND INTANGIBLE ASSETS, NET - Intangible Asset (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Less accumulated amortization	$ (479,455)	$ (449,259)
Total amortizable intangible assets, net	772,979	786,049
Customer contracts
Finite-Lived Intangible Assets [Line Items]
Total amortizable intangible assets, gross	1,135,963	1,135,963
Right of way assets
Finite-Lived Intangible Assets [Line Items]
Total amortizable intangible assets, gross	$ 116,471	$ 99,345