INCOME TAXES (Schedule of Income Before Income Tax, Domestic and Foreign) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Income Tax Disclosure [Abstract]
Domestic income (loss)									$ 99,822	$ 22,788	$ (36,756)
Foreign income									212,933	456,182	434,049
INCOME BEFORE INCOME TAXES	$ 5,918	$ 120,116	$ 136,426	$ 50,295	$ 166,115	$ 122,539	$ 134,976	$ 55,340	$ 312,755	$ 478,970	$ 397,293