Revenue Recognition (Tables)

6 Months Ended

Jun. 30, 2021

Revenue From Contract With Customer [Abstract]

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

The following table disaggregates our net sales by place of manufacture (point of origin) and to the location of the customer (point of destination), which are the categories that depict how the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors.

	Three months ended						Six months ended
	June 30,						June 30,
	2020			2021			2020			2021
	(In millions)
Net sales - point of origin:
United States	$	226.6		$	236.0		$	463.6		$	489.9
Germany		183.1			238.8			412.2			470.0
Canada		85.6			103.0			153.3			200.2
Belgium		50.9			75.9			117.0			142.4
Norway		62.6			64.1			116.9			135.1
Eliminations		(222.8	)		(239.2	)		(456.0	)		(494.0	)
Total	$	386.0		$	478.6		$	807.0		$	943.6
Net sales - point of destination:
Europe	$	169.8		$	236.8		$	384.3		$	464.1
North America		148.9			157.3			281.2			302.6
Other		67.3			84.5			141.5			176.9
Total	$	386.0		$	478.6		$	807.0		$	943.6