Basis of Presentation and Accounting Policies - Additional Information (Details) $ in Millions			3 Months Ended		9 Months Ended
		Oct. 01, 2021 USD ($)	Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)	Sep. 30, 2021	Dec. 31, 2021 USD ($)
Accounting Policies [Line Items]
Non-cash impairment charge loss			$ 0.0	$ 0.0
Goodwill	[1]		$ 1,710.0			$ 1,722.2
Ettain Group [Member]
Accounting Policies [Line Items]
Aggregate cash consideration paid		$ 930.9
Draw on revolving credit facility		150.0
Ettain Group [Member] | working capital and cash [Member]
Accounting Policies [Line Items]
Aggregate cash consideration paid		5.9
Ettain Group [Member] | Acquired interests [Member]
Accounting Policies [Line Items]
Aggregate cash consideration paid		$ 925.0
Netherlands
Accounting Policies [Line Items]
Percentage of goodwill over fair value of reporting unit			5.50%
Discount rate for goodwill impairment test (as a percent)			10.4
Netherlands | Terminal Value Revenue Growth Rate
Accounting Policies [Line Items]
Discount rate for goodwill impairment test (as a percent)			2.0
Netherlands | Terminal Value OUP Margin
Accounting Policies [Line Items]
Discount rate for goodwill impairment test (as a percent)			3.5
Northern Europe | United Kingdom
Accounting Policies [Line Items]
Goodwill			$ 107.8			110.7
Northern Europe | Netherlands
Accounting Policies [Line Items]
Goodwill			$ 109.2			$ 112.2
Minimum
Accounting Policies [Line Items]
Percentage of goodwill over fair value of reporting unit			20.00%
Minimum | Other Reporting Units
Accounting Policies [Line Items]
Percentage of goodwill over fair value of reporting unit					20.00%
Minimum | Netherlands
Accounting Policies [Line Items]
Discount rate for goodwill impairment test (as a percent)			3.0
Maximum [Member] | Netherlands
Accounting Policies [Line Items]
Discount rate for goodwill impairment test (as a percent)			5.0

[1] Balances were net of accumulated impairment loss of $644.2 as of both March 31, 2022 and December 31, 2021.