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Segment Information (Details 2) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Geographic Information
Operating revenues	$ 460.1	$ 429.9
Long-lived assets	1,760.8		$ 1,770.9
U.S.
Geographic Information
Operating revenues	270.3	$ 272.1
Long-lived assets	$ 993.8		1,006.1
Foreign
Geographic Information
Percent of foreign revenue from Canada	53.00%	54.00%
Operating revenues	$ 189.8	$ 157.8
Long-lived assets	$ 767.0		$ 764.8

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