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Income Taxes (Changes In Unrecognized Tax Benefits) (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]      
Balance as of January 1 $ 15.2us-gaap_UnrecognizedTaxBenefits $ 14.5us-gaap_UnrecognizedTaxBenefits $ 15.1us-gaap_UnrecognizedTaxBenefits
Additions based on tax positions related to the current year 4.8us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions 0us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions 0.2us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions
Additions for tax positions of prior years 0.1us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions 0us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions 0us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions
Reductions for tax positions of prior years (2.3)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions (0.9)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions (0.4)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions
Balances related to acquired businessess 14.2us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromAcquisition 1.1us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromAcquisition 0us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromAcquisition
Settlements and other (3.4)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities   (0.4)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities
Settlements and other   0.5us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromSettlementsWithTaxingAuthorities  
Balance as of December 31 $ 28.6us-gaap_UnrecognizedTaxBenefits $ 15.2us-gaap_UnrecognizedTaxBenefits $ 14.5us-gaap_UnrecognizedTaxBenefits