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Income Taxes (Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate) (Details)	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Statutory rate									35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
State taxes, net of Federal tax benefit									1.20%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	1.50%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	1.00%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
Foreign tax expense and tax rate differential									(0.70%)us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.50%us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	1.60%us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential
Research and development tax credit									(0.40%)us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	(0.80%)us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	0.00%us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch
Domestic Production Activities Deduction									(0.40%)us-gaap_EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	(0.50%)us-gaap_EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	(0.60%)us-gaap_EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities
Valuation allowance on capital losses and PA loss carryforwards									0.00%us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	(2.40%)us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	(0.30%)us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
Net change in uncertain tax positions									0.30%us-gaap_EffectiveIncomeTaxRateReconciliationTaxContingencies	0.10%us-gaap_EffectiveIncomeTaxRateReconciliationTaxContingencies	0.50%us-gaap_EffectiveIncomeTaxRateReconciliationTaxContingencies
Other, net									(0.10%)us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.30%us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments	(0.30%)us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments
Effective tax rates	33.30%us-gaap_EffectiveIncomeTaxRateContinuingOperations	34.70%us-gaap_EffectiveIncomeTaxRateContinuingOperations	35.70%us-gaap_EffectiveIncomeTaxRateContinuingOperations	35.90%us-gaap_EffectiveIncomeTaxRateContinuingOperations	35.20%us-gaap_EffectiveIncomeTaxRateContinuingOperations	28.50%us-gaap_EffectiveIncomeTaxRateContinuingOperations	35.50%us-gaap_EffectiveIncomeTaxRateContinuingOperations	34.90%us-gaap_EffectiveIncomeTaxRateContinuingOperations	34.90%us-gaap_EffectiveIncomeTaxRateContinuingOperations	33.70%us-gaap_EffectiveIncomeTaxRateContinuingOperations	36.90%us-gaap_EffectiveIncomeTaxRateContinuingOperations

X

- Definition

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

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- Definition

Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to deduction for qualified production activity.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to statutory income tax expense (benefit) outside of the country of domicile.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to income tax contingencies. Includes, but not limited to, domestic tax contingency, foreign tax contingency, state and local tax contingency, and other contingencies.

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