Revenue (Tables)

12 Months Ended

Dec. 31, 2021

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue by Timing

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

	Year Ended December 31, 2021
	Cryo Tank Solutions		Heat Transfer Systems		Specialty Products		Repair, Service & Leasing		Intersegment Eliminations		Consolidated
Point in time	$	407.6	$	19.2	$	300.5	$	119.1	$	(10.7)	$	835.7
Over time	39.8		243.5		132.4		67.9		(1.6)		482.0
Total	$	447.4	$	262.7	$	432.9	$	187.0	$	(12.3)	$	1,317.7

	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

Changes in Contract Assets and Contract Liabilities Balances

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

	December 31, 2021		December 31, 2020		Year-to-date Change ($)		Year-to-date Change (%)
Contract assets
Accounts receivable, net of allowances	$	236.3	$	200.8	$	35.5	17.7	%
Unbilled contract revenue	93.5		79.4		14.1		17.8	%
Contract liabilities
Customer advances and billings in excess of contract revenue	$	148.5	$	118.9	$	29.6	24.9	%
Long-term deferred revenue	0.4		1.9		(1.5)		(78.9)	%