Supplemental Financial Data - Other Non-Current Assets (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure Text Block Supplement [Abstract]
Right of use assets	$ 71.9	$ 64.8
Prepaid pension assets	36.6	4.3
Investments	27.2	27.3
Other non-current assets	36.9	16.2
Total	$ 172.6	$ 112.6	[1]

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