Asset Retirement Obligations (Tables)

12 Months Ended

Dec. 31, 2025

Asset Retirement Obligation Disclosure [Abstract]

Asset Retirement Obligation

The following table summarizes the aggregate carrying amount of the Company's ARO (in millions):

	As of December 31,
	2025		2024
Balance at beginning of year	$	72.2	$	74.1
Liabilities recorded	1.0		5.0
Liabilities settled	(3.2)		(9.9)
Accretion expense	1.9		2.1
Revision of estimates	—		0.9
Balance at end of year	71.9		72.2
Less:  Current portion of ARO	(0.3)		(2.2)
Long-term ARO	$	71.6	$	70.0