Revenues from Contracts (Tables)

12 Months Ended

Dec. 31, 2021

Revenue from Contract with Customer [Abstract]

We disaggregate revenue from contracts with customers by major product line and based on the timing of recognition for each of our reportable segments, as we believe such disaggregation best depicts how the nature, amount, timing, and uncertainty of our revenues and cash flows are effected by economic factors, with such disaggregation presented below for the years ended December 31, 2021, 2020, and 2019:


	Year Ended December 31, 2021
Reportable Segments	HVAC		Detection and Measurement		Total

Major product lines
Package and process cooling equipment and services, and engineered air quality solutions	$	433.8	$	—	$	433.8
Boilers, comfort heating, and ventilation	318.3		—		318.3
Underground locators, inspection and rehabilitation equipment, and robotic systems	—		256.8		256.8
Communication technologies, obstruction lighting, and bus fare collection systems	—		210.6		210.6
	$	752.1	$	467.4	$	1,219.5

Timing of Revenue Recognition
Revenues recognized at a point in time	$	661.2	$	415.9	$	1,077.1
Revenues recognized over time	90.9		51.5		142.4
	$	752.1	$	467.4	$	1,219.5


	Year Ended December 31, 2020
Reportable Segments	HVAC		Detection and Measurement		Total

Major product lines
Package and process cooling equipment and services	$	447.1	$	—	$	447.1
Boilers, comfort heating, and ventilation	293.7		—		293.7
Underground locators, inspection and rehabilitation equipment, and robotic systems	—		217.8		217.8
Communication technologies, obstruction lighting, and bus fare collection systems	—		169.5		169.5
	$	740.8	$	387.3	$	1,128.1

Timing of Revenue Recognition
Revenues recognized at a point in time	$	622.2	$	341.9	$	964.1
Revenues recognized over time	118.6		45.4		164.0
	$	740.8	$	387.3	$	1,128.1


	Year Ended December 31, 2019
Reportable Segments	HVAC		Detection and Measurement		Total

Major product lines
Package and process cooling equipment and services	$	429.7	$	—	$	429.7
Boilers, comfort heating, and ventilation	309.0		—		309.0
Underground locators and inspection and rehabilitation equipment	—		194.3		194.3
Communication technologies, obstruction lighting, and bus fare collection systems	—		190.6		190.6
	$	738.7	$	384.9	$	1,123.6

Timing of Revenue Recognition
Revenues recognized at a point in time	$	631.4	$	357.1	$	988.5
Revenues recognized over time	107.3		27.8		135.1
	$	738.7	$	384.9	$	1,123.6

Contract with Customer, Asset and Liability

Our contract balances consisted of the following as of December 31, 2021 and 2020:


Contract Balances	December 31, 2021		December 31, 2020		Change
Contract Accounts Receivable (1)	$	215.3	$	200.6	$	14.7
Contract Assets	28.9		32.5		(3.6)
Contract Liabilities - current	(44.7)		(38.8)		(5.9)
Contract Liabilities - non-current (2)	(5.8)		(3.4)		(2.4)
Net contract balance	$	193.7	$	190.9	$	2.8

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(1) Included in “Accounts receivable, net” within the accompanying consolidated balance sheets.

(2) Included in “Other long-term liabilities” within the accompanying consolidated balance sheets.