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Income Taxes Income Taxes (Table 3) (Details)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Income Taxes [Abstract]      
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential (2.70%)us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential (2.00%)us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential (3.00%)us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential
Effective Income Tax Rate Reconciliation, State and Local Income Taxes 1.10%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes 3.00%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes 3.40%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
Effective Income Tax Rate Reconciliation, Nondeductible Expense 0.20%us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpense 0.10%us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpense 0.10%us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpense
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance (0.10%)us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance 0.00%us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance (0.30%)us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
Effective Income Tax Rate Reconciliation, Deductions, Other 0.80%us-gaap_EffectiveIncomeTaxRateReconciliationDeductionsOther (0.20%)us-gaap_EffectiveIncomeTaxRateReconciliationDeductionsOther 0.20%us-gaap_EffectiveIncomeTaxRateReconciliationDeductionsOther
Effective Income Tax Rate, Continuing Operations 34.30%us-gaap_EffectiveIncomeTaxRateContinuingOperations 36.20%us-gaap_EffectiveIncomeTaxRateContinuingOperations 35.10%us-gaap_EffectiveIncomeTaxRateContinuingOperations