Other Noncurrent Liabilities (Tables)

6 Months Ended

Jun. 30, 2023

Other Liabilities Disclosure [Abstract]

Other Noncurrent Liabilities

	December 31,		June 30,
	2022		2023
	(In millions)
Accrued development costs	$	48.1	$	38.7
Accrued litigation settlement		27.4		27.7
Operating lease liabilities		17.4		17.1
Deferred income		25.9		16.0
Insurance claims and expenses		18.7		16.0
Other postretirement benefits		7.1		7.2
Employee benefits		4.8		4.9
Reserve for uncertain tax positions		.3		.3
Other		6.7		7.1
Total	$	156.4	$	135.0