ACCUMULATED OTHER COMPREHENSIVE LOSS - Summary (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period	$ 3,898,318,000	$ 3,551,801,000
Total other comprehensive (loss) income, net of income taxes	(26,105,000)	1,310,000
Balance at end of period	3,454,824,000	3,571,336,000
Tax provision (benefit) on accumulated other comprehensive loss	0
Foreign Currency Translation Adjustment attributable to Parent
Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period	(136,349,000)	(128,726,000)
Balance at end of period	(157,273,000)	(126,725,000)
Foreign Currency Translation Adjustment including portion attributable to Noncontrolling Interest
Accumulated Other Comprehensive Income (Loss)
Other comprehensive income (loss) before reclassifications	(21,307,000)	993,000
Amounts reclassified to earnings	(20,000)
Total other comprehensive (loss) income, net of income taxes	(21,327,000)	993,000
Foreign Currency Translation Adjustment attributable to Noncontrolling Interest
Accumulated Other Comprehensive Income (Loss)
Total other comprehensive (loss) income, net of income taxes	403,000	1,008,000
Unrealized Gains (Losses) on Available-for-Sale Debt Securities attributable to Parent
Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period	0	4,000
Balance at end of period	(12,000)	6,000
Unrealized Gains (Losses) on Available-for-Sale Debt Securities including Portion Attributable to Noncontrolling Interest
Accumulated Other Comprehensive Income (Loss)
Other comprehensive income (loss) before reclassifications	(12,000)	2,000
Amounts reclassified to earnings	0
Total other comprehensive (loss) income, net of income taxes	(12,000)	2,000
Unrealized Gains (Losses) on Available-for-Sale Debt Securities attributable to Noncontrolling Interest
Accumulated Other Comprehensive Income (Loss)
Total other comprehensive (loss) income, net of income taxes	0	0
Accumulated Other Comprehensive (Loss) Income attributable to Parent
Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period	(136,349,000)	(128,722,000)
Balance at end of period	(157,285,000)	(126,719,000)
Accumulated Other Comprehensive (Loss) Income including portion attributable to Noncontrolling Interest
Accumulated Other Comprehensive Income (Loss)
Other comprehensive income (loss) before reclassifications	(21,319,000)	995,000
Amounts reclassified to earnings	(20,000)
Total other comprehensive (loss) income, net of income taxes	(21,339,000)	995,000
Accumulated Other Comprehensive (Loss) Income attributable to Noncontrolling Interest
Accumulated Other Comprehensive Income (Loss)
Total other comprehensive (loss) income, net of income taxes	$ 403,000	$ 1,008,000