Legal Actions And Contingencies (Narrative) (Details) - USD ($) $ in Thousands	1 Months Ended
	Mar. 31, 2018	Jun. 30, 2017
Loss Contingencies [Line Items]
Income taxes payable	$ 124,569	$ 29,150
Australian Taxation Office [Member]
Loss Contingencies [Line Items]
Additional tax liabilities related to assessments	151,700
Interest related to assessments	$ 38,400
Minimum [Member] | Australian Taxation Office [Member]
Loss Contingencies [Line Items]
Tax year under audit	2009
Maximum [Member] | Australian Taxation Office [Member]
Loss Contingencies [Line Items]
Tax year under audit	2013
Due April 2018 [Member] | Australian Taxation Office [Member]
Loss Contingencies [Line Items]
Income taxes payable	$ 75,900