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Income Taxes (Deferred Tax Assets And Liabilities) (Details) - USD ($) | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
--- | --- | --- | ---
Income Tax Disclosure [Line Items] |  |  |
Depreciation/Impairment | $ (858,283,000) | $ (637,997,000) |
Debt |  | 1,326,000 |
Intangibles | (28,834,000) | (37,033,000) |
Interest expense | (5,435,000) | 6,008,000 |
Accrued maintenance liability | 4,877,000 | 12,143,000 |
Obligations under capital leases and debt obligations | (3,411,000) | (3,725,000) |
Investments | (10,155,000) | (2,946,000) |
Deferred losses | 66,543,000 | 49,787,000 |
Accrued expenses | 14,554,000 | 26,532,000 |
Valuation allowance | (72,000,000) | (61,933,000) |
Losses and credits forward | 715,841,000 | 562,292,000 |
Other | (27,884,000) | (8,288,000) |
Net deferred tax asset (liabilities) | (204,187,000) | (93,834,000) |
The Netherlands [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Depreciation/Impairment | 11,580,000 | 12,479,000 |
Valuation allowance | (13,915,000) |  |
Losses and credits forward | 13,915,000 |  |
Other | (2,936,000) | 3,210,000 |
Net deferred tax asset (liabilities) | 8,644,000 | 15,689,000 |
Ireland [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Depreciation/Impairment | (876,219,000) | (618,323,000) |
Debt |  | (355,000) |
Intangibles | (10,071,000) | (73,000) |
Accrued maintenance liability | (7,003,000) | (7,673,000) |
Obligations under capital leases and debt obligations | (3,411,000) | (3,725,000) |
Investments |  | 2,500,000 |
Valuation allowance | 0 |  |
Losses and credits forward | 630,302,000 | 514,757,000 |
Other | (20,647,000) | (1,127,000) |
Net deferred tax asset (liabilities) | (287,049,000) | (114,019,000) |
United States Of America [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Depreciation/Impairment | 5,393,000 | (28,964,000) |
Debt |  | 1,681,000 |
Intangibles | (18,763,000) | (36,960,000) |
Interest expense | (5,435,000) | 6,008,000 |
Accrued maintenance liability | 11,880,000 | 19,816,000 |
Investments | (10,155,000) | (5,446,000) |
Deferred losses | 66,543,000 | 49,787,000 |
Accrued expenses | 14,554,000 | 26,532,000 |
Valuation allowance | (35,074,000) | (25,000,000) |
Losses and credits forward | 32,342,000 | 3,586,000 |
Other | 7,350,000 | 2,870,000 |
Net deferred tax asset (liabilities) | 68,635,000 | 13,910,000 |
Other [Member] |  |  |
Income Tax Disclosure [Line Items] |  |  |
Depreciation/Impairment | 963,000 | (3,189,000) |
Valuation allowance | (23,011,000) | (36,933,000) |
Losses and credits forward | 39,282,000 | 43,949,000 |
Other | (11,651,000) | (13,241,000) |
Net deferred tax asset (liabilities) | $ 5,583,000 | $ (9,414,000) |

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