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Income Tax (Provision for Income Tax Expense) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Income Tax Disclosure [Abstract] |  |  |  |
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount | $ 72,889 | $ 67,759 | $ 172,984 | $ 148,654
Tax Adjustments, Settlements, and Unusual Provisions | 0 | 664 | 0 | (2,685)
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount | 0 | (58,949) | 0 | (59,139)
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount | 84 | 7,537 | 1,373 | 8,795
Income Tax Reconciliation Foreign Income Tax Basis Differential | (9,550) | (2,371) | (30,626) | (9,264)
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount | 27,721 | (5,334) | 50,607 | 5,357
Effective Income Tax Rate Reconciliation, Tax Contingency, Domestic, Amount | 3,259 | 1,851 | 6,223 | 650
Income Tax Reconciliation Change In Foreign Enacted Tax Rate | 116 | (166) | (1,621) | 30
Income Tax Reconciliation SubpartF | (26) | (99) | 440 | 211
Effective Income Tax Rate Reconciliation, Tax Credit, Foreign, Amount | (651) | (544) | (759) | (1,003)
Effective Income Tax Rate Reconciliation Global Intangible Low Taxed Income | 0 | 7,624 | 0 | 11,916
Effective Income Tax Rate Reconciliation, Equity in Earnings (Losses) of Unconsolidated Subsidiary, Amount | 1,034 | 817 | 6,189 | 5,067
Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Amount | (8,362) | 4,213 | (4,400) | 4,108
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount | (121) | 94 | 729 | (492)
Income Tax Expense (Benefit) | $ 84,325 | $ 21,462 | $ 188,761 | $ 102,071
Effective Income Tax Rate Reconciliation, Percent | 24.30% | 6.70% | 22.90% | 14.40%

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- Definition The portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations, that is attributable to changes in the foreign income tax rates under enacted tax laws in the period. + References No definition available. + Details
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