Other Assets and Liabilities - Other Non-Current Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Other Assets and Other Liabilities [Abstract]
Deferred revenue - long term	$ 11.8	$ 7.8
U.S. tax liability associated with the 2017 Act	49.8	55.0
Long term lease liability	62.4	71.2
Other	7.1	3.7
Total	$ 131.1	$ 137.7