Segment Reporting (Summary of the Impact on the Adjusted EBITDA) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Segment Reporting Information [Line Items]
Increase (decrease) to revenue	$ 0.0	$ 0.0
Increase (decrease) to Adjusted EBITDA	0.0	0.0
Increase (decrease) to property and equipment additions	0.0	0.0
Central and Other
Segment Reporting Information [Line Items]
Increase (decrease) to revenue	57.4	60.0
Increase (decrease) to Adjusted EBITDA	38.8	32.2
Increase (decrease) to property and equipment additions	0.0	0.0
Intersegment eliminations
Segment Reporting Information [Line Items]
Increase (decrease) to revenue	(57.4)	(60.0)
Increase (decrease) to Adjusted EBITDA	(15.0)	(15.7)
Increase (decrease) to property and equipment additions	(15.0)	(15.7)
Operating Segments | Switzerland
Segment Reporting Information [Line Items]
Increase (decrease) to Adjusted EBITDA	(15.7)	(10.4)
Increase (decrease) to property and equipment additions	5.5	5.8
Operating Segments | Belgium
Segment Reporting Information [Line Items]
Increase (decrease) to Adjusted EBITDA	(2.2)	(2.3)
Increase (decrease) to property and equipment additions	6.9	7.2
Operating Segments | Ireland
Segment Reporting Information [Line Items]
Increase (decrease) to Adjusted EBITDA	(5.9)	(3.8)
Increase (decrease) to property and equipment additions	$ 2.6	$ 2.7