OPERATIONS BY GEOGRAPHIC AREAS (Schedule of Operations by Geographic Areas) (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
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues		$ 188,677	$ 227,797	$ 296,351	$ 307,819	$ 363,176	$ 330,562	$ 350,387	$ 351,726	$ 1,020,644	$ 1,395,851	$ 1,173,953
Property and equipment, net		4,127,696				4,172,132				4,127,696	4,172,132	3,967,028
Australia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues										296,566	478,939	457,281
Property and equipment, net		528,427				640,530				528,427	640,530	669,845
Cameroon [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues										65,954	70,507	43,389
Property and equipment, net		154,651				160,206				154,651	160,206	166,464
Equatorial Guinea [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues										0	22,843	41,245
Property and equipment, net		0				0				0	0	66,045
Israel [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues										0	0	2,749
Italy [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues										45,023	60,927	58,912
Property and equipment, net		0				77,102				0	77,102	82,617
South Korea [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, net	[1]	845,445				693,575				845,445	693,575	311,494
Malaysia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues										0	22,545	49,610
Property and equipment, net		192				254				192	254	321
Malta [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, net		69,711				0				69,711	0	3,332
Mauritania [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues										122,330	69,691	0
Property and equipment, net		603,882				629,179				603,882	629,179	0
Morocco [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues										0	119,594	18,128
Property and equipment, net		0				0				0	0	627,459
Senegal [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues										62,146	0	0
Phillipines [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, net		325,575				0				325,575	0	0
Singapore [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, net		61,824				0				61,824	0	0
Thailand [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues										35,295	129,634	149,961
Property and equipment, net		168,735				349,972				168,735	349,972	539,333
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues										393,330	405,859	352,678
Property and equipment, net		1,369,254				1,455,109				1,369,254	1,455,109	1,500,118
Vietnam [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues										0	15,312	0
Property and equipment, net		$ 0				$ 166,205				0	166,205	0
Other Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues										$ 0	$ 0	$ 0

[1] Property and equipment, net in South Korea consists of assets under construction.