Revenue

Disaggregated sales disclosures for the quarter ended and year-to-date ended September 29, 2019, and September 30, 2018, are included below and in Note 14, Segmental Information.



	Third Quarter
	2019						2018
In millions	Gas Cylinders		Elektron		Total		Gas Cylinders		Elektron		Total
General industrial	$	10.1	$	29.0	$	39.1	$	13.4	$	38.3	$	51.7
Transportation	20.8		11.9		32.7		21.0		18.1		39.1
Defense and emergency	17.8		11.5		29.3		20.4		10.3		30.7
Healthcare	5.5		0.5		6.0		7.4		0.2		7.6
	$	54.2	$	52.9	$	107.1	$	62.2	$	66.9	$	129.1



	Year-to-date
	2019						2018
In millions	Gas Cylinders		Elektron		Total		Gas Cylinders		Elektron		Total
General industrial	$	34.2	$	88.1	$	122.3	$	40.2	$	99.3	$	139.5
Transportation	65.8		48.2		114.0		57.3		55.2		112.5
Defense and emergency	55.2		34.2		89.4		62.3		38.4		100.7
Healthcare	15.5		2.8		18.3		22.1		2.2		24.3
	$	170.7	$	173.3	$	344.0	$	181.9	$	195.1	$	377.0

The Company’s performance obligations are satisfied over time as work progresses or at a point in time. Design and tooling arrangements are the only contracts for which sales are recognized over time. Sales from these sources combined accounted for less than 1% of the Company’s sales for the quarters ended and year-to-date ended September 29, 2019, and September 30, 2018. All consideration from contracts with customers is included in these amounts.

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



In millions	September 29, 2019			December 31, 2018
Contract receivables	$	1.6		$	1.5
Contract assets	1.6			2.1
Contract liabilities	$	(0.4	)	$	(1.1	)

Contract assets consist of $1.6 million accrued unbilled amounts relating to tooling revenue and are recognized in prepayments and accrued income in the condensed consolidated balance sheets. Of the $2.1 million contract assets recognized as of December 31, 2018, $1.6 million was billed to customers and transferred to receivables as of September 29, 2019.

Contract liabilities of $0.4 million consist of advance payments and billing above costs incurred and are recognized as other current liabilities in the condensed consolidated balance sheets. 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	(0.6		)
Costs incurred / revenue recognized	1.3
As at September 29,	$	(0.4	)