Asset Retirement Obligations - Changes to Asset Retirement Obligation (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2025	Dec. 31, 2024
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Asset retirement obligation at beginning of period		$ 32.4	$ 31.4
Accretion expense		1.5	1.5
Liabilities Incurred	[1]	0.4	0.0
Payments		(0.1)	(0.3)
Revisions in estimated payments		(3.2)	(0.2)
Asset retirement obligation at end of period		$ 31.0	$ 32.4

[1] For 2025, includes $0.4 million in new liabilities incurred as a result of the Greif Acquisition.