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Legal Actions And Contingencies (Narrative) (Details) - USD ($) $ in Thousands | 1 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Jun. 30, 2018 | Apr. 30, 2018 | Mar. 31, 2018 | Mar. 31, 2020 | Jun. 30, 2019
Loss Contingencies [Line Items] |  |  |  |  |
Income taxes payable |  |  |  | $ 68,278 | $ 73,248
Australian Taxation Office [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Percentage of penalties on additional income tax | 50.00% |  |  |  |
Tax liabilities related to assessments | $ 75,900 | $ 75,900 | $ 151,700 |  |
Interest related to assessments |  |  | $ 38,400 |  |
Tax Year 2009 To 2013 [Member] | Minimum [Member] | Australian Taxation Office [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Tax year under audit |  |  | 2009 | 2009 |
Tax Year 2009 To 2013 [Member] | Maximum [Member] | Australian Taxation Office [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Tax year under audit |  |  | 2013 | 2013 |
Tax Year 2014 To 2018 [Member] | Australian Taxation Office [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Tax year under audit |  |  |  | 2018 |
Tax Year 2014 To 2018 [Member] | Minimum [Member] | Australian Taxation Office [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Tax year under audit |  |  |  | 2014 |
Tax Year 2014 To 2018 [Member] | Maximum [Member] | Australian Taxation Office [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Tax year under audit |  |  |  | 2018 |

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