Amount of current and deferred foreign income tax expense (benefit) attributable to income (loss) from continuing operations.

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The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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The net amount of all increases and decreases in unrecognized tax benefits for the period.

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Summary of Significant Accounting Policies Income Tax (Details) (USD $)	12 Months Ended			108 Months Ended	96 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Dec. 31, 2013
Income Tax Contingency [Line Items]
Income taxes paid, including foreign witholding taxes	$ 114,876,000us-gaap_IncomeTaxesPaid	$ 24,961,000us-gaap_IncomeTaxesPaid	$ 116,871,000us-gaap_IncomeTaxesPaid
Income Tax Expense (Benefit)	52,108,000us-gaap_IncomeTaxExpenseBenefit	25,836,000us-gaap_IncomeTaxExpenseBenefit	136,830,000us-gaap_IncomeTaxExpenseBenefit
Unrecognized Tax Benefits	5,700,000
Unrecognized Tax Benefits, Increases Resulting from Prior Period Tax Positions	1,266,000	0	0
Unrecognized Tax Benefits	5,700,000us-gaap_TaxCreditCarryforwardAmount			5,700,000us-gaap_TaxCreditCarryforwardAmount
Unrecognized Tax Benefits, Period Increase (Decrease)	700,000
Foreign Tax Authority [Member]
Income Tax Contingency [Line Items]
Income taxes paid, including foreign witholding taxes	70,700,000	23,300,000	3,600,000	239,800,000
Foreign Tax Authority [Member] \| Tax Period 2006-2013 [Member] [Domain]
Income Tax Contingency [Line Items]
Income taxes paid, including foreign witholding taxes					239,800,000
Research and Development Arrangement [Member]
Income Tax Contingency [Line Items]
Income Tax Expense (Benefit)	$ 900,000