DERIVATIVE INSTRUMENTS - Effect of Derivative Instruments Designated Cash Flow Hedges on Statements of Operations (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Derivative Instruments, Gain (Loss) [Roll Forward]
Balance, Beginning of Period	$ 1,375,796	$ 962,306
Balance, End of Period	1,397,030	998,440
Accumulated Other Comprehensive Income (Loss)
Derivative Instruments, Gain (Loss) [Roll Forward]
Balance, Beginning of Period	(45,443)	(23,807)
Balance, End of Period	(56,679)	(1,663)
Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Roll Forward]
Amount of Gain (Loss) Recognized in AOCI	1,803	7,913
Amount of Gain (Loss) Reclassified from AOCI into Earnings	8,911	(5,110)
Designated as Hedging Instrument \| Accumulated Other Comprehensive Income (Loss)
Derivative Instruments, Gain (Loss) [Roll Forward]
Balance, Beginning of Period	(6,203)	(4,512)
Balance, End of Period	(13,311)	8,511
Designated as Hedging Instrument \| Interest rate swap \| Cash Flow Hedges \| Interest income
Derivative Instruments, Gain (Loss) [Roll Forward]
Balance, Beginning of Period	619
Amount of Gain (Loss) Recognized in AOCI	(15,891)
Amount of Gain (Loss) Reclassified from AOCI into Earnings	1,406
Balance, End of Period	(16,678)
Designated as Hedging Instrument \| Interest rate swap \| Cash Flow Hedges \| Interest expense
Derivative Instruments, Gain (Loss) [Roll Forward]
Balance, Beginning of Period		592
Amount of Gain (Loss) Recognized in AOCI		14,940
Amount of Gain (Loss) Reclassified from AOCI into Earnings		(656)
Balance, End of Period		16,188
Designated as Hedging Instrument \| Cross-currency swap \| Cash Flow Hedges \| Other income, net
Derivative Instruments, Gain (Loss) [Roll Forward]
Balance, Beginning of Period	(6,190)	(5,104)
Amount of Gain (Loss) Recognized in AOCI	7,473	(7,027)
Amount of Gain (Loss) Reclassified from AOCI into Earnings	5,178	(4,454)
Balance, End of Period	(3,895)	$ (7,677)
Designated as Hedging Instrument \| Cross-currency swap \| Net Investment Hedges \| Interest income
Derivative Instruments, Gain (Loss) [Roll Forward]
Balance, Beginning of Period	(632)
Amount of Gain (Loss) Recognized in AOCI	10,221
Amount of Gain (Loss) Reclassified from AOCI into Earnings	2,327
Balance, End of Period	$ 7,262

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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.

+ References

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-Publisher FASB
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- Definition

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.

+ References

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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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