DERIVATIVE AND HEDGING INSTRUMENTS - Effect of Derivatives and Financial Instruments Designated as Hedging Instruments on Income and Equity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Derivative Instruments, Gain (Loss) [Line Items]
(Loss) gain in other comprehensive (loss) income, cash flow hedges and net investment hedges	$ (25,029)	$ 14,149	$ 1,841
Gain (Loss) Reclassified from Accumulated Other Comprehensive Income Into Income	5,545	3,099	(2,174)
Interest rate products
Derivative Instruments, Gain (Loss) [Line Items]
(Loss) gain recognized in other comprehensive (loss) income, cash flow hedges	(19,932)	2,707	10,807
Gain (Loss) Reclassified from Accumulated Other Comprehensive Income Into Income	5,545	3,099	(2,174)
Foreign currency products
Derivative Instruments, Gain (Loss) [Line Items]
(Loss) gain recognized in other comprehensive (loss) income, net investment hedges	(772)	3,554	(2,378)
Gain (Loss) Reclassified from Accumulated Other Comprehensive Income Into Income	0	0	0
CAD term loan
Derivative Instruments, Gain (Loss) [Line Items]
(Loss) gain recognized in other comprehensive (loss) income, net investment hedges	(4,325)	7,888	(6,588)
Gain (Loss) Reclassified from Accumulated Other Comprehensive Income Into Income	$ 0	$ 0	$ 0