Accrued Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Accrued Liabilities, Current [Abstract]
Compensation and benefits	$ 119.7	$ 148.2
Contract liability	73.4	42.7
Accrued interest	64.2	116.5
Customer advances and licenses	42.5	55.0
Taxes, other than income	26.7	27.7
Contingent acquisition consideration liabilities	22.1	0.0
Legal accruals	7.0	14.9
Other	121.6	104.1
Total Accrued Liabilities	$ 477.2	$ 509.1