Other noncurrent liabilities (Tables)

6 Months Ended

Jun. 30, 2024

Other noncurrent liabilities

Other noncurrent liabilities

	December 31,		June 30,
	2023		2024
	(In millions)
Accrued development costs	$	42.3	$	41.4
Operating lease liabilities		18.6		18.1
Accrued litigation settlement		16.1		16.3
Insurance claims and expenses		14.9		15.0
Deferred income		15.5		12.2
Other postretirement benefits		7.4		7.1
Employee benefits		4.9		4.6
Other		7.8		8.0
Total	$	127.5	$	122.7