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Revenue (Tables)

12 Months Ended

Dec. 31, 2019

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

Disaggregated revenue disclosures for the fiscal years ended December 31, 2019, December 31, 2018, and December 31, 2017, are included below and in Note 16, Segmental Information.

		Years ended December 31,
		2019										2018										2017
	In millions	Gas Cylinders			Elektron			Total				Gas Cylinders			Elektron			Total				Gas Cylinders			Elektron			Total
	General industrial	$	46.0		$	111.7		$	157.7			$	50.7		$	123.9		$	174.6			$	49.6		$	95.6		$	145.2
	Transportation	83.8			59.5			143.3				79.0			72.8			151.8				63.8			66.5			130.3
	Defense and emergency	73.5			45.1			118.6				79.3			49.4			128.7				76.5			54.1			130.6
	Healthcare	20.3			3.6			23.9				29.1			3.7			32.8				30.3			4.9			35.2
		$	223.6		$	219.9		$	443.5			$	238.1		$	249.8		$	487.9			$	220.2		$	221.1		$	441.3

Schedule of Contract Assets and Liabilities

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

	In millions	December 31, 2019				December 31, 2018
	Contract receivables	$	1.7			$	1.5
	Contract assets	1.3				2.1
	Contract liabilities	(0.5		)		(1.1		)

Contract liabilities of $0.5 million consist of advance payments and billing above costs incurred and are recognized as other current liabilities. Significant changes in contract liabilities balances during the period are as follows:

	In millions	2019				2018
	As at January 1,	$	(1.1	)		$	(0.9	)
	Payments received / amounts billed	(0.9		)		(3.8		)
	Costs incurred / revenue recognized	1.5				3.6
	As at December 31,	$	(0.5	)		$	(1.1	)

X

- Definition

Tabular disclosure of contract balances and changes in contract balances.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130551-203045

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- Definition

Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045

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