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New Accounting Pronouncements and Changes in Accounting (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Sep. 30, 2016
Recent Accounting Pronouncements Abstract
Other non-current assets	$ 115,518	$ 218,898
Long-term debt	3,753,799	3,702,157
Accounting Standards Update April 2015
Recent Accounting Pronouncements Abstract
Other non-current assets	(55,400)	(56,800)
Long-term debt	$ 55,400	$ 56,800

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Amount of long-term debt and capital lease obligation due after one year or beyond the normal operating cycle, if longer.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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-Subparagraph (SX 210.5-02(22))
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Amount of noncurrent assets classified as other.

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