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Investments - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2024	Jun. 30, 2024	Dec. 31, 2023
Variable Interest Entity
Guarantor liability		$ 33.9	$ 36.9
Inventories, net		848.5	802.3
Property, plant and equipment, net		4,473.0	4,444.5
Forecast \| Cobra U.K.
Variable Interest Entity
Interest acquired	49.90%
RMMC/RMBC
Variable Interest Entity
Inventories, net		69.0	108.2
Property, plant and equipment, net		112.1	120.7
BRI & BDL
Variable Interest Entity
Guarantor liability		$ 31.6	$ 35.4