DERIVATIVE AND HEDGING INSTRUMENTS - Effect of Derivative Financial Instruments on the Condensed Consolidated Statements of Income and Condensed Consolidated Statements of Equity (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Derivative Instruments, Gain (Loss) [Line Items]
(Loss) gain in other comprehensive (loss) income, cash flow hedges and net investment hedges	$ (10,031)	$ 6,657	$ (24,801)	$ 19,062
Interest rate products
Derivative Instruments, Gain (Loss) [Line Items]
(Loss) gain recognized in other comprehensive (loss) income, cash flow hedges	(8,126)	4,009	(19,737)	13,132
Interest rate products | Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) reclassified from accumulated other comprehensive income into income, cash flow hedges	1,695	633	3,608	583
Foreign currency products
Derivative Instruments, Gain (Loss) [Line Items]
(Loss) gain recognized in other comprehensive (loss) income, net investment hedges	(42)	898	(1,276)	1,505
CAD term loan
Derivative Instruments, Gain (Loss) [Line Items]
(Loss) gain recognized in other comprehensive (loss) income, net investment hedges	$ (1,863)	$ 1,750	$ (3,788)	$ 4,425