Basis Of Presentation And Summary Of Significant Accounting Policies (Narrative) (Details) - USD ($)		3 Months Ended			9 Months Ended
		Mar. 31, 2019	Mar. 31, 2018		Mar. 31, 2019	Mar. 31, 2018
Income tax expense	[1]	$ (2,490,000)	$ 19,418,000	[2]	$ 1,702,000	$ 39,757,000	[2]
Net income	[1]	(54,784,000)	32,375,000	[2]	(123,924,000)	61,480,000	[2]
Comprehensive income (loss)		(60,850,000)	52,887,000	[3]	(143,826,000)	121,202,000	[3]
Income before income tax	[1]	$ (57,538,000)	48,135,000	[2]	$ (119,545,000)	94,751,000	[2]
Decreased Net Cash Provided by Operating Activities [Member]
Correction of other insignificant misstatements in consolidated statement of cash flows						300
Cell C [Member]
Change in fair value			37,843			37,843
Cell C [Member] | Restatement Adjustment [Member]
Income tax expense			8,477			8,477
Net income			29,366			29,366
Comprehensive income (loss)			29,366			29,366
Income before income tax			$ 37,843			$ 37,843

[1] Refer to Note 2 for discontinued operations disclosures.

[2] Refer to Note 1

[3] Refer to Note 1.