Restructuring Charges - Narrative (Details) $ in Millions	1 Months Ended		12 Months Ended
	Feb. 07, 2019 USD ($)		Dec. 31, 2021 USD ($) employee	Dec. 31, 2020 USD ($) employee		Dec. 31, 2019 USD ($) employee
Restructuring and Related Activities [Abstract]
Restructuring charges	$ 0.1	[1]	$ 25.1	$ 37.3	[1],[2]	$ 52.3	[1],[2]
Severance costs	$ 0.1		$ 18.9	$ 9.9		$ 36.6
Number of employees impacted | employee			190	165		540
Contract termination, write-down of right-of-use assets and other exit costs			$ 6.2	$ 27.4		$ 15.7

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

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