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Revenue from Contracts with Customers Components of Contract Assets and Contract Liabilities (Details) - USD ($)
$ in Millions
Mar. 31, 2020
Dec. 31, 2019
Revenue from Contract with Customer [Abstract]    
Contract with Customer, Asset, Net, Current $ 7.2 $ 3.5
Contract with Customer, Asset, Net, Noncurrent 0.4 0.0
Contract with Customer, Liability, Current 24.5 30.0
Contract with Customer, Liability, Noncurrent $ 8.8 $ 9.7