Revenue (Tables)

9 Months Ended

Sep. 30, 2021

Revenue from Contract with Customer [Abstract]

Reconciliation of Revenue from Segments to Consolidated

Revenue from contracts with customers consist of the following (in millions):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2021		2020		2021		2020
Revenue
Infrastructure	$	383.0	$	160.8	$	776.3	$	509.6
Spectrum	10.2		9.7		31.3		29.3
Life Sciences	1.6		—		2.8		—
Total revenue	$	394.8	$	170.5	$	810.4	$	538.9

Schedule of Accounts Receivable

Accounts receivables, net from contracts with customers consist of the following (in millions):

	September 30, 2021		December 31, 2020
Accounts receivables with customers
Infrastructure	$	405.4	$	168.5
Spectrum	9.0		7.3
Life Sciences	0.2		—
Total accounts receivables with customers	$	414.6	$	175.8

Accounts receivable, net consist of the following (in millions):

	September 30, 2021		December 31, 2020
Contracts in progress	$	306.0	$	118.6
Unbilled retentions	99.8		50.3
Trade receivables	9.3		7.5
Other receivables	10.5		8.9
Allowance for doubtful accounts	(0.6)		(0.6)
Total	$	425.0	$	184.7

Disaggregation of Revenue

The following table disaggregates DBMG's revenue by market (in millions):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2021		2020		2021		2020
Commercial	$	207.0	$	48.2	$	343.3	$	165.0
Industrial	92.9		52.2		207.9		170.6
Transportation	16.0		18.2		40.0		58.0
Government	15.9		17.5		54.6		37.2
Leisure	4.8		8.2		16.5		35.5
Healthcare	17.1		7.9		37.2		20.6
Convention	23.4		1.2		51.7		5.0
Other	5.9		7.3		25.1		17.0
Total revenue from contracts with customers	383.0		160.7		776.3		508.9
Other revenue	—		0.1		—		0.7
Total Infrastructure segment revenue	$	383.0	$	160.8	$	776.3	$	509.6

The following table disaggregates the Life Sciences segment's revenue by type (in millions):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2021		2020		2021		2020
Systems and consumables revenue	$	1.6	$	—	$	2.8	$	—
Total Life Sciences segment revenue	$	1.6	$	—	$	2.8	$	—

Spectrum Segment

The following table disaggregates the Spectrum segment's revenue by type (in millions):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2021		2020		2021		2020
Broadcast station	$	4.7	$	4.0	$	13.6	$	11.3
Network advertising	4.2		4.1		13.7		13.1
Network distribution	0.8		1.0		2.5		3.0
Other	0.5		0.6		1.5		1.9
Total Spectrum segment revenue	$	10.2	$	9.7	$	31.3	$	29.3

Contract with Customer, Asset and Liability

Contract assets and contract liabilities consisted of the following (in millions):

	September 30, 2021		December 31, 2020
Contract assets	$	72.5	$	55.6
Contract liabilities	$	(161.4)	$	(52.2)

Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction

The transaction price allocated to remaining unsatisfied performance obligations consisted of the following (in millions):

	Within one year		Within five years		Total
Commercial	$	535.9	$	543.2	$	1,079.1
Industrial	178.2		—		178.2
Transportation	31.3		16.1		47.4
Government	34.9		—		34.9
Leisure	16.6		2.0		18.6
Healthcare	57.3		—		57.3
Convention	119.8		50.0		169.8
Other	12.7		—		12.7
Remaining unsatisfied performance obligations	$	986.7	$	611.3	$	1,598.0