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Summary Of Significant Accounting Policies (Schedule Of Reclassification Of Assets And Equity Upon Adoption ASU 2016-16) (Details) - USD ($) $ in Thousands | Sep. 30, 2018 | Jul. 01, 2018 | Jun. 30, 2018
--- | --- | --- | ---
Assets |  |  |
Prepaid expenses and other current assets | $ 111,757 |  | $ 124,634
Prepaid taxes and other non-current assets | 117,024 |  | 273,710
Deferred income taxes | 46,226 |  | 53,818
Equity |  |  |
Retained earnings | $ 2,296,473 |  | 2,432,328
As Reported Balance [Member] |  |  |
Assets |  |  |
Prepaid expenses and other current assets |  |  | 124,634
Prepaid taxes and other non-current assets |  |  | 273,710
Deferred income taxes |  |  | 53,818
Equity |  |  |
Retained earnings |  |  | $ 2,432,328
Revised Balance [Member] |  |  |
Assets |  |  |
Prepaid expenses and other current assets |  | $ 95,687 |
Prepaid taxes and other non-current assets |  | 117,304 |
Deferred income taxes |  | 50,373 |
Equity |  |  |
Retained earnings |  | 2,243,530 |
ASU 2016-16 [Member] | Adoption Of ASU 2016-16 Increase/(Decrease) [Member] |  |  |
Assets |  |  |
Prepaid expenses and other current assets |  | (28,947) |
Prepaid taxes and other non-current assets |  | (156,406) |
Deferred income taxes |  | (3,445) |
Equity |  |  |
Retained earnings |  | $ (188,798) |

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