Segmental Information (Geographic Information of Revenue and location of assets) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 3,679.6	$ 1,733.8	$ 1,417.0
Property, plant and equipment	1,200.9	459.1
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	2,591.6	970.9	748.7
Property, plant and equipment	884.9	241.9
Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	551.5	375.7	281.1
Property, plant and equipment	155.0	87.3
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	321.8	143.2	183.0
Property, plant and equipment	20.2	20.0
Australia
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	136.7	181.3	149.6
Property, plant and equipment	117.5	86.7
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	78.0	62.7	$ 54.6
Property, plant and equipment	$ 23.3	$ 23.2