Revenue Revenue (Tables)

3 Months Ended

Mar. 31, 2019

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

Disaggregated sales disclosures for the quarter ended March 31, 2019, and April 1, 2018, are included below and in Note 14, Segmental Information.

	First Quarter
	2019						2018
In millions	Gas Cylinders		Elektron		Total		Gas Cylinders		Elektron		Total
General industrial	$	13.1	$	30.6	$	43.7	$	13.0	$	28.4	$	41.4
Transportation	20.9		19.1		40.0		16.7		17.4		34.1
Defense and emergency	18.7		10.5		29.2		23.2		13.6		36.8
Healthcare	5.7		1.8		7.5		6.4		1.0		7.4
	$	58.4	$	62.0	$	120.4	$	59.3	$	60.4	$	119.7

Schedule of Contract Assets and Liabilities

Significant changes in contract liabilities balances during the period are as follows:

In millions	2019
As at January 1,	$	(1.1	)
Payments received / amounts billed	(0.1		)
Costs incurred / revenue recognized	0.4
As at March 31,	$	(0.8	)

The following table provides information about contract receivables, contract assets and contract liabilities from contracts with customers:

In millions	March 31, 2019			December 31, 2018
Contract receivables	$	1.9		$	1.5
Contract assets	2.0			2.1
Contract liabilities	(0.8		)	(1.1		)