ACCUMULATED OTHER COMPREHENSIVE LOSS - Schedule of Changes in Accumulated Other Comprehensive Income by Component (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, Beginning of Period	$ 1,574,981	$ 1,529,331	$ 1,514,867	$ 1,349,096	$ 1,341,803	$ 1,416,736	$ 1,514,867
Other comprehensive income (loss)							47,706
Less: Amounts reclassified from accumulated other comprehensive loss							20,421
Net current-period other comprehensive income (loss)	3,189	(6,336)	30,432	11,212	1,464	(28,187)	27,285
Balance, End of Period	1,631,687	1,574,981	1,529,331	1,397,988	1,349,096	1,341,803	1,631,687
Total
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, Beginning of Period	(49,963)	(43,627)	(74,059)	(103,125)	(104,589)	(76,402)	(74,059)
Net current-period other comprehensive income (loss)	3,189	(6,336)	30,432	11,212	1,464	(28,187)
Balance, End of Period	(46,774)	$ (49,963)	(43,627)	$ (91,913)	$ (103,125)	$ (104,589)	(46,774)
Gains and Losses on Derivatives
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, Beginning of Period			(82,249)				(82,249)
Other comprehensive income (loss)							60,497
Less: Amounts reclassified from accumulated other comprehensive loss							20,421
Net current-period other comprehensive income (loss)							40,076
Balance, End of Period	(42,173)						(42,173)
Defined Benefit Pension Items
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, Beginning of Period			(5,105)				(5,105)
Other comprehensive income (loss)							267
Less: Amounts reclassified from accumulated other comprehensive loss							0
Net current-period other comprehensive income (loss)							267
Balance, End of Period	(4,838)						(4,838)
Foreign Currency Items
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, Beginning of Period			$ 13,295				13,295
Other comprehensive income (loss)							(13,058)
Less: Amounts reclassified from accumulated other comprehensive loss							0
Net current-period other comprehensive income (loss)							(13,058)
Balance, End of Period	$ 237						$ 237