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Commitments and Contingencies (Operating Leases Future Minimum Payments Receivable) (Details)
$ in Millions
Dec. 31, 2016
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
2017 $ 37.6
2018 26.5
2019 17.9
2020 13.5
2021 9.8
Thereafter 43.6
Total $ 148.9