Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2024

Revenue From Contract With Customer [Abstract]

Disaggregation of Net Sales by Place of Manufacture and to Location of Customer

	Three months ended
	March 31,
	2023		2024
	(In millions)
Net sales - point of origin:
United States	$	255.8	$	240.9
Germany		186.0		212.2
Canada		90.9		89.3
Norway		71.9		71.0
Belgium		68.8		69.6
Eliminations		(247.1)		(204.2)
Total	$	426.3	$	478.8
Net sales - point of destination:
Europe	$	201.1	$	214.9
North America		148.6		166.0
Other		76.6		97.9
Total	$	426.3	$	478.8