Revenue - Contract Balances (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020		Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Accounts receivable, net	$ 401.7	$ 319.3	[1]	$ 272.2
Short-term contract assets	3.4	0.7		1.0
Long-term contract assets	9.1	3.8		2.5
Short-term deferred revenue	569.4	477.2	[1]	473.4
Long-term deferred revenue	$ 13.7	$ 14.6		$ 5.8

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