DERIVATIVES AND HEDGING - Summary of Impact of Freestanding Derivative Instruments on Condensed Consolidated Statement of Operations (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Derivative Instruments, Gain (Loss) [Line Items]
Gains and losses from freestanding derivative instruments	$ (1,691)	$ (1,114)	$ (20,483)	$ 22,841
Investment Income | Not Designated as Hedging Instrument | Foreign-currency forward contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gains and losses from freestanding derivative instruments	6,530	0	(2,371)	0
General and Administrative Expense | Not Designated as Hedging Instrument | Foreign-currency forward contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gains and losses from freestanding derivative instruments	$ (8,221)	$ (1,114)	$ (18,112)	$ 22,841