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Income Taxes (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Income Taxes [Line Items] |  |  |
Transition tax on foreign earnings payable |  | $ 96,400 |
Foreign tax credit related to withholding taxes |  | 106,700 |
Change in state tax expense - remeasurement of deferred tax assets |  | $ 10,000 |
Transition tax, noncurrent liability | $ 73,900 |  |
Taxes Payable, Current | $ 7,800 |  |
Federal statutory rate |  | 21.00% | 35.00%
Federal income tax rate after enactment of Tax reform (Percentage) | 21.00% |  |
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount | $ 0 | $ 0 | $ 186,800
Effective Income Tax Rate Reconciliation, Tax Holiday, Amount | 17,300 | 16,900 | 12,300
Transition tax on foreign earnings | 0 | 5,602 | $ (162,353)
foreign withholding tax | $ 13,100 | $ 60,700 |
Impact of tax holiday on diluted earnings per share | $ 0.15 | $ 0.14 | $ 0.10
Liability for Uncertain Tax Positions, Noncurrent | $ 229,200 |  |
Change in state tax expense |  | $ 5,600 |
State [Member] |  |  |
Income Taxes [Line Items] |  |  |
Net operating loss carryforwards | $ 329,800 |  |
Foreign [Member] |  |  |
Income Taxes [Line Items] |  |  |
Tax credit carryforward expiration | 2028 |  |
Federal And State [Member] |  |  |
Income Taxes [Line Items] |  |  |
Operating Loss Carryforwards, Date | 2020 through 2034 |  |

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