Other Assets and Liabilities - Other Non-Current Assets (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Other Assets and Other Liabilities [Abstract]
Right of use assets	$ 78.3	$ 87.9
Prepaid pension assets	14.7	9.9
Investments	26.8	23.7
Other non-current assets	10.9	13.1
Total	$ 130.7	$ 134.6