Goodwill and Other Intangible Assets - Schedule of Goodwill Balances by Reporting Unit (Details) - USD ($) $ in Millions		Mar. 31, 2023	Dec. 31, 2022
Goodwill [Line Items]
Goodwill	[1]	$ 1,631.7	$ 1,628.1
Jefferson Wells
Goodwill [Line Items]
Goodwill		55.5
Netherlands | Jefferson Wells
Goodwill [Line Items]
Goodwill		55.8	55.1
France
Goodwill [Line Items]
Goodwill		74.3	73.3
Canada
Goodwill [Line Items]
Goodwill		41.7	41.6
Americas | United States
Goodwill [Line Items]
Goodwill		1,006.5	1,006.5
Americas | United States | Jefferson Wells
Goodwill [Line Items]
Goodwill		1,085.3	1,085.3
Northern Europe | Netherlands
Goodwill [Line Items]
Goodwill		55.8
Northern Europe | United Kingdom
Goodwill [Line Items]
Goodwill		101.9	100.2
Southern Europe | France
Goodwill [Line Items]
Goodwill		80.4	79.5
Other Reporting Units
Goodwill [Line Items]
Goodwill		$ 266.6	$ 266.4

[1] Balances were net of accumulated impairment loss of $694.2 as of both March 31, 2023 and December 31, 2022.