Revenue

12 Months Ended

Dec. 31, 2020

Revenue from Contract with Customer [Abstract]

Revenue

Revenue

Disaggregation of Revenue

The following tables represent a disaggregation of revenue by timing of revenue along with the reportable segment for each category:

	Year Ended December 31, 2020
	Cryo Tank Solutions		Heat Transfer Systems		Specialty Products		Repair, Service & Leasing		Intersegment Eliminations		Consolidated
Point in time	$	378.3	$	28.6	$	184.6	$	110.3	$	(4.5)	$	697.3
Over time	37.5		341.2		58.0		48.0		(4.9)		479.8
Total	$	415.8	$	369.8	$	242.6	$	158.3	$	(9.4)	$	1,177.1

	Year Ended December 31, 2019
	Cryo Tank Solutions		Heat Transfer Systems		Specialty Products		Repair, Service & Leasing		Intersegment Eliminations		Consolidated
Point in time	$	385.2	$	26.3	$	161.2	$	117.6	$	(5.2)	$	685.1
Over time	24.7		415.4		46.7		45.0		(1.4)		530.4
Total	$	409.9	$	441.7	$	207.9	$	162.6	$	(6.6)	$	1,215.5

	Year Ended December 31, 2018
	Cryo Tank Solutions		Heat Transfer Systems		Specialty Products		Repair, Service & Leasing		Intersegment Eliminations		Consolidated
Point in time	$	366.9	$	60.3	$	150.3	$	102.5	$	(2.2)	$	677.8
Over time	4.5		229.5		34.2		57.9		—		326.1
Total	$	371.4	$	289.8	$	184.5	$	160.4	$	(2.2)	$	1,003.9

Refer to Note 4, “Segment and Geographic Information,” for a table of revenue by reportable segment disaggregated by geography.

Contract Balances

The following table represents changes in our contract assets and contract liabilities balances:

	December 31, 2020		December 31, 2019		Year-to-date Change ($)		Year-to-date Change (%)
Contract assets
Accounts receivable, net of allowances	$	200.8	$	191.6	$	9.2	4.8	%
Unbilled contract revenue	79.4		86.1		(6.7)		(7.8)	%
Contract liabilities
Customer advances and billings in excess of contract revenue	$	118.9	$	127.7	$	(8.8)	(6.9)	%
Long-term deferred revenue	1.9		0.8		1.1		137.5	%

Revenue recognized for the years ended December 31, 2020 and 2019, that was included in the contract liabilities balance at the beginning of each year was $101.2 and $113.2, respectively. The amount of revenue recognized during the year ended December 31, 2020 from performance obligations satisfied or partially satisfied in previous periods as a result of changes in the estimates of variable consideration related to long-term contracts, was not significant. Long-term deferred revenue is included in other long-term liabilities in the consolidated balance sheets for the years ended December 2020 and 2019.

Remaining Performance Obligations

Remaining performance obligations represent the transaction price of firm signed purchase orders or other written contractual commitments from customers for which work has not been performed, or is partially completed, and excludes unexercised contract options and potential orders.  As of December 31, 2020, the estimated revenue expected to be recognized in the future related to remaining performance obligations was $810.0. We expect to recognize revenue on approximately 81% of the remaining performance obligations over the next 12 months and 9% of the remaining performance obligations over the next 13 to 24 months, with the remaining balance recognized thereafter.