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Contractual Commitments Contingencies and Off-Balance Sheet Arrangements (Minimum Commitments Under Obligation From Various Facilities And Equipment Leases and Software License Agreements) (Details)
$ in Millions
Jun. 30, 2019
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
2018 $ 147.9
2019 109.4
2020 87.4
2021 67.6
2022 50.1
Thereafter 134.0
Future Minimum Payments Due $ 596.4