DERIVATIVE FINANCIAL INSTRUMENTS, Derivative Gain (Loss) Recognized in AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
Derivative Instruments, Gain (Loss) [Line Items]
Total (losses) gains recognized in AOCI, net of taxes	$ (34,880)	$ 29,018	$ (19,378)	$ 42,076
Forward foreign exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Total (losses) gains recognized in AOCI, net of taxes	(23,411)	30,519	(11,174)	43,577
Interest rate contract
Derivative Instruments, Gain (Loss) [Line Items]
Total (losses) gains recognized in AOCI, net of taxes	$ (11,469)	$ (1,501)	$ (8,204)	$ (1,501)