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Income Taxes (Reconciliation Of Income Tax At Effective Income Tax Rate) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Income Tax Expense (Benefit), Continuing Operations [Abstract] |  |  |
Income tax expense at federal statutory rate | $ (153,199) | $ (209,654) | $ (203,410)
State taxes, net of federal benefit | (35,852) | (13,029) | (14,517)
Differences between statutory rate and foreign effective tax rate | 46,928 | 83,808 | 79,087
Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Benefit, Amount | (9,006) | (7,728) | 0
Capital loss carryforwards expiration | 769,700 | 0 | 0
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount | (773,737) | (5,813) | (511)
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount | 0 | (186,800) | 0
Transition tax on foreign earnings | (5,602) | 162,353 | 0
U.S tax on foreign earnings, net of foreign tax credits | 24,208 | 4,123 | 2,881
foreign withholding tax | (812) | 33,619 | 0
Other | (147) | (3,135) | 682
Income tax (expense) benefit | $ 147,027 | $ 141,764 | $ 140,528

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- Definition Amount of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to excess tax benefit for share-based compensation cost. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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