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Lines of Credit and Financing Arrangements (Details 1) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Debt Proceeds [Line Items]      
Proceeds from (Repayments of) Debt $ 18.1us-gaap_ProceedsFromRepaymentsOfDebt $ 18.3us-gaap_ProceedsFromRepaymentsOfDebt $ 18.5us-gaap_ProceedsFromRepaymentsOfDebt
2014 250.6us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths    
2015 31.2us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo    
2016 230.0us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree    
2017 32.6us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour    
2018 369.5us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive    
Thereafter $ 11.7us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive