Asset Retirement Obligations (Tables)

12 Months Ended

Dec. 31, 2025

Asset Retirement Obligation [Abstract]

Changes to Asset Retirement Obligation

The following table describes changes to the asset retirement obligation liability (dollars in millions):

	Year Ended December 31,
	2025			2024
Asset retirement obligation at beginning of period	$	32.4		$	31.4
Accretion expense		1.5			1.5
Liabilities incurred (a)		0.4			—
Payments		(0.1	)		(0.3	)
Revisions in estimated payments		(3.2	)		(0.2	)
Asset retirement obligation at end of period	$	31.0		$	32.4

(a)For 2025, includes $0.4 million in new liabilities incurred as a result of the Greif Acquisition.