Goodwill and other identifiable intangible assets (Tables)

9 Months Ended

Sep. 26, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

Changes in goodwill during the first nine months ended September 26, 2021, were as follows:

In millions	Gas Cylinders		Elektron		Total
At January 1, 2021	$	27.9	$	42.3	$	70.2
Additions	2.6		—		2.6
Exchange difference	0.1		—		0.1
Net balance at September 26, 2021	$	30.6	$	42.3	$	72.9

Schedule of Intangible Assets

Identifiable intangible assets consisted of the following:

	September 26, 2021						December 31, 2020
In millions	Gross		Accumulated amortization		Net		Gross		Accumulated amortization		Net
Customer relationships	$	13.4	$	(5.5)	$	7.9	$	13.4	$	(5.2)	$	8.2
Technology and trading related	8.3		(4.0)		4.3		8.3		(3.7)		4.6
	$	21.7	$	(9.5)	$	12.2	$	21.7	$	(8.9)	$	12.8