Other noncurrent liabilities (Tables)

3 Months Ended

Mar. 31, 2026

Other noncurrent liabilities

Other noncurrent liabilities

	December 31,		March 31,
	2025		2026
	(In millions)
Accrued development costs	$	16.1	$	14.0
Asset retirement obligations		14.7		14.7
Insurance claims and expenses		16.1		17.8
Operating lease liabilities		15.7		15.8
Deferred income		2.9		2.8
Other postretirement benefits		6.4		6.2
Employee benefits		4.6		4.4
Other		.5		5.9
Total	$	77.0	$	81.6