DERIVATIVE INSTRUMENTS - Effect of Derivative Instruments Designated Cash Flow Hedges on Statements of Operations (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Derivative Instruments, Gain (Loss) [Roll Forward]
Balance, Beginning of Period	$ 1,349,095	$ 1,420,951	$ 1,416,736	$ 1,375,796
Balance, End of Period	1,397,987	1,384,974	1,397,987	1,384,974
Accumulated Other Comprehensive Loss
Derivative Instruments, Gain (Loss) [Roll Forward]
Balance, Beginning of Period	(103,125)	(68,700)	(76,402)	(45,443)
Balance, End of Period	(91,913)	(87,615)	(91,913)	(87,615)
Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Roll Forward]
Amount of Gain (Loss) Recognized in AOCL	(21,497)	13,009	(63,194)	(12,865)
Amount of Gain (Loss) Reclassified from AOCL into Earnings	(8,869)	10,246	(11,244)	19,560
Designated as Hedging Instrument \| Accumulated Other Comprehensive Loss
Derivative Instruments, Gain (Loss) [Roll Forward]
Balance, Beginning of Period	(74,062)	(41,391)	(34,740)	(6,203)
Balance, End of Period	(86,690)	(38,628)	(86,690)	(38,628)
Designated as Hedging Instrument \| Interest rate swap \| Cash Flow Hedges \| Interest expense
Derivative Instruments, Gain (Loss) [Roll Forward]
Balance, Beginning of Period	(102,128)	(43,161)	(45,146)	619
Amount of Gain (Loss) Recognized in AOCL	(3,971)	(13,788)	(65,608)	(54,841)
Amount of Gain (Loss) Reclassified from AOCL into Earnings	(5,718)	237	(10,373)	2,964
Balance, End of Period	(100,381)	(57,186)	(100,381)	(57,186)
Designated as Hedging Instrument \| Cross-currency swap \| Cash Flow Hedges \| Other income (expense),net
Derivative Instruments, Gain (Loss) [Roll Forward]
Balance, Beginning of Period	5,843	(2,284)	177	(6,190)
Amount of Gain (Loss) Recognized in AOCL	(6,272)	9,661	(2,688)	15,418
Amount of Gain (Loss) Reclassified from AOCL into Earnings	(5,353)	7,520	(7,435)	9,371
Balance, End of Period	4,924	(143)	4,924	(143)
Designated as Hedging Instrument \| Cross-currency swap \| Net Investment Hedges \| Interest income
Derivative Instruments, Gain (Loss) [Roll Forward]
Balance, Beginning of Period	22,223	4,054	10,229	(632)
Amount of Gain (Loss) Recognized in AOCL	(11,254)	17,136	5,102	26,558
Amount of Gain (Loss) Reclassified from AOCL into Earnings	2,202	2,489	6,564	7,225
Balance, End of Period	$ 8,767	$ 18,701	$ 8,767	$ 18,701

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness.

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Amount, after tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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- Definition

Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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