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Income Taxes (Schedule of Effective Income Tax Rate Reconciliation) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
United States federal statutory rate	35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Provision for income taxes at United States federal statutory rate of 35%	$ 188.7us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	$ 280.9us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	$ 210.3us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
State and local income taxes, net of federal income tax benefit	2.6us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes	5.6us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes	3.9us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes
Taxes on foreign income which differ from the United States statutory rate	(33.4)us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential	(34.7)us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential	(19.8)us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential
Tax effect of permanent differences	(10.3)us-gaap_IncomeTaxReconciliationTaxExemptIncome	(7.6)us-gaap_IncomeTaxReconciliationTaxExemptIncome	11.5us-gaap_IncomeTaxReconciliationTaxExemptIncome
Change in valuation allowance	22.8us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	9.3us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	(64.3)us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
Change in tax contingency reserves	25.2us-gaap_IncomeTaxReconciliationTaxContingencies	25.7us-gaap_IncomeTaxReconciliationTaxContingencies	20.8us-gaap_IncomeTaxReconciliationTaxContingencies
Research and development tax credits	(7.1)us-gaap_IncomeTaxReconciliationNondeductibleExpenseResearchAndDevelopment	(19.9)us-gaap_IncomeTaxReconciliationNondeductibleExpenseResearchAndDevelopment	(26.3)us-gaap_IncomeTaxReconciliationNondeductibleExpenseResearchAndDevelopment
Other	(0.8)us-gaap_IncomeTaxReconciliationOtherReconcilingItems	(0.8)us-gaap_IncomeTaxReconciliationOtherReconcilingItems	1.8us-gaap_IncomeTaxReconciliationOtherReconcilingItems
Income tax provision	$ 187.7us-gaap_IncomeTaxExpenseBenefit	$ 258.5us-gaap_IncomeTaxExpenseBenefit	$ 137.9us-gaap_IncomeTaxExpenseBenefit

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

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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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