Other Assets and Liabilities - Other Accrued and Current Liabilities (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Operating expenses accruals	$ 88.8	$ 75.9
Accrued interest expense	10.3	29.0
Short-term lease liability	29.9	23.4
Other accrued liabilities	27.9	22.8
Total	156.9	$ 151.1	[1]
China
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term lease liability related to a new lease and a lease modified during period	0.6
Bisnode
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term lease liability related to a new lease and a lease modified during period	$ 8.4

[1] See discussion in Note 1 - Basis of Presentation for further detail regarding the elimination of the International lag reporting.