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Acquisitions and Dispositions Dispositions (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Jul. 25, 2014
Dispositions [Abstract]    
Disposal Group, Including Discontinued Operation, Loans Receivable, Net   $ 13.3us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsNotesAndLoansReceivableNet
Disposal Group, Including Discontinued Operation, Liabilities of Disposal Group   60.3us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal $ 2.1us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal