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Leases - Supplemental Consolidated Balance Sheet information Related Operating Leases (Details)
$ in Millions
Dec. 31, 2019
USD ($)
Leases [Abstract]  
Operating lease right-of-use assets $ 131.8
Current operating lease liabilities 30.1
Long-term operating lease liabilities 131.1
Operating lease liabilities $ 161.2
Weighted average remaining lease term (years) 9 years 8 months 12 days
Weighted average discount rate 4.78%