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Income Taxes (Summary Of Income Tax Expense (Benefit) By Tax Jurisdiction) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Income Tax Disclosure [Line Items] |  |  |  |  |
Deferred tax expense (benefit) | $ 161,340 | $ 110,353 |  | $ 115,859 |
Provision for income taxes | 173,496 | 189,805 | [1] | 137,373 | [1]
Ireland [Member] |  |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |  |
Deferred tax expense (benefit) | 141,364 | 151,623 |  | 87,147 |
Deferred tax expense (benefit) related to an increase (decrease) in changes in valuation allowance of deferred tax assets | 1,562 |  |  |  |
Current tax expense (benefit) | 4,730 | (99) |  | 229 |
The Netherlands [Member] |  |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |  |
Deferred tax expense (benefit) | (8,346) | (7,453) |  | 1,339 |
Deferred tax expense (benefit) related to an increase (decrease) in changes in valuation allowance of deferred tax assets | 12,843 | 13,915 |  |  |
Current tax expense (benefit) | 1,164 | 37,512 |  | 5,290 |
United States Of America [Member] |  |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |  |
Deferred tax expense (benefit) | (41,163) | (65,341) |  | 26,267 |
Deferred tax expense (benefit) related to an increase (decrease) in changes in valuation allowance of deferred tax assets | 54,056 | 10,074 |  |  |
Current tax expense (benefit) | 3,166 | 39,358 |  | 15,553 |
Other [Member] |  |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |  |
Deferred tax expense (benefit) | 14,124 | 22,130 |  | (5,744) |
Deferred tax expense (benefit) related to an increase (decrease) in changes in valuation allowance of deferred tax assets | (13,100) | (13,922) |  | 6,850 |
Current tax expense (benefit) | 3,096 | 2,008 |  | 442 |
Deferred Tax Expense (Benefit) [Member] |  |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |  |
Deferred tax expense (benefit) | 105,979 | 100,959 |  | 109,009 |
Deferred Tax Expense (Benefit) Related To An Increase (Decrease) In Changes In Valuation Allowance Of Deferred Tax Assets [Member] |  |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |  |
Deferred tax expense (benefit) related to an increase (decrease) in changes in valuation allowance of deferred tax assets | 55,361 | 10,067 |  | 6,850 |
Current Tax Expense (Benefit) [Member] |  |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |  |
Current tax expense (benefit) | $ 12,156 | $ 78,779 |  | $ 21,514 |
[1] | Effective February 1, 2016, we moved our headquarters and executive officers from Amsterdam to Dublin, and as of February 1, 2016, we became tax resident in Ireland. Accordingly, we have updated the figures for the years ended December 31, 2015 and 2014 as compared to those previously reported in the financial statements contained in our 2015 annual report on Form 20-F to reflect the permanent differences being taxed at the Irish statutory rate of 12.5% rather than the Dutch statutory rate of 25%.

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