Income Taxes Schedule of Income Before Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	9 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Sep. 30, 2018	Sep. 30, 2017
Schedule of Income Before Income Tax, Domestic and Foreign [Line Items]
Income (Loss) from Continuing Operations before Income Taxes, Domestic	$ (57,408)	$ 13,104			$ (120,812)	$ 310,846
Income (Loss) from Continuing Operations before Income Taxes, Foreign	(42,699)	(6,796)			(20,505)	3,771
Pre-tax income (loss)	$ (100,107)	$ 6,308	$ (141,317)	$ 314,617	$ (141,317)	$ 314,617

[Line Items] for Schedule of Income Before Income Tax, Domestic and Foreign [Table]

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- Definition

The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h)(1)(i))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

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- Definition

The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile.

+ References

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- Definition

Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

+ References

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