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Income Taxes (Narrative) (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 | May. 14, 2014
Income Tax Disclosure [Line Items] |  |  |  |  |
Unrecognized tax benefits |  | $ 15,500,000 | $ 12,400,000 |  | $ 5,400,000
Net deferred tax (liability) asset |  | (204,187,000) | (93,834,000) |  |
Deferred income tax assets |  | 161,193,000 | 190,029,000 |  |
Deferred income tax liabilities |  | 365,380,000 | 283,863,000 |  |
Valuation allowance on tax assets |  | 72,000,000 | $ 61,933,000 |  |
Release of valuation allowance |  | $ 25,000,000 |  |  |
The Netherlands [Member] |  |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |  |
Corporate income tax rate | [1] | 25.00% | 25.00% | 25.00% |
Net deferred tax (liability) asset |  | $ 8,644,000 | $ 15,689,000 |  |
Valuation allowance on tax assets |  | $ 13,915,000 |  |  |
Carried back period |  | 1 year |  |  |
Carry forward period |  | 9 years |  |  |
Deferred tax expense (benefit) related to an increase (decrease) in changes in valuation allowance of deferred tax assets |  | $ 13,915,000 |  |  |
Ireland [Member] |  |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |  |
Corporate income tax rate | [1] | 12.50% | 12.50% | 12.50% |
Net deferred tax (liability) asset |  | $ (287,049,000) | $ (114,019,000) |  |
Valuation allowance on tax assets |  | 0 |  |  |
Deferred tax expense (benefit) related to an increase (decrease) in changes in valuation allowance of deferred tax assets |  | $ 0 |  |  |
United States Of America [Member] |  |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |  |
Corporate income tax rate | [1] | 36.30% | 38.30% | 35.60% |
Blended federal and state tax rate |  | 36.30% |  |  |
Net deferred tax (liability) asset |  | $ 68,635,000 | $ 13,910,000 |  |
Valuation allowance on tax assets |  | 35,074,000 | 25,000,000 |  |
U.S. federal net operating losses |  | 91,700,000 |  |  |
Deferred tax expense (benefit) related to an increase (decrease) in changes in valuation allowance of deferred tax assets |  | 10,074,000 |  |  |
Australia [Member] |  |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |  |
Valuation allowance on tax assets |  | 23,000,000 | $ 36,900,000 |  |
ILFC [Member] | United States Of America [Member] |  |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |  |
Release of valuation allowance |  | 25,000,000 |  |  |
AeroTurbine, Inc. [Member] | United States Of America [Member] |  |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |  |
Valuation allowance on tax assets |  | $ 33,300,000 |  |  |
[1] | The local statutory income tax expense for our significant tax jurisdictions (the Netherlands, Ireland, the United States of America and Isle of Man) does not differ from the actual income tax expense.

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- Definition Amount of other deferred income tax expense (benefit) pertaining to income (loss) from continuing operations. For example, but not limited to, acquisition-date income tax benefits or expenses recognized from changes in the acquirer's valuation allowance for its previously existing deferred tax assets resulting from a business combination and adjustments to beginning-of-year balance of a valuation allowance because of a change in circumstance causing a change in judgment about the realizability of the related deferred tax asset in future periods. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (g),(h) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I.7) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Deferred Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6510177 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 6 -Section I -Subsection 7 + Details
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