Revenue from contracts with customers (Tables)

6 Months Ended

Jun. 30, 2020

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

Revenue Disaggregated by Reportable Segment and Type of Service

(In millions)	Core Services		High-Value Services		Other Security Services	Total
Three months ended June 30, 2020
Reportable Segments:
North America	$	204.0	145.1		—	349.1
South America	87.1		67.7		4.1	158.9
Rest of World	129.0		152.6		36.4	318.0
Total reportable segments	420.1		365.4		40.5	826.0
Three months ended June 30, 2019
Reportable Segments:
North America	$	279.8	162.7		—	442.5
South America	118.8		104.0		2.4	225.2
Rest of World	88.1		124.4		34.1	246.6
Total reportable segments	486.7		391.1		36.5	914.3
Not Allocated to Segments:
Acquisitions and dispositions	—		(0.3	)	—	(0.3	)
Total	$	486.7	390.8		36.5	914.0
Six months ended June 30, 2020
Reportable Segments:
North America	$	478.2	315.2		—	793.4
South America	187.5		161.5		7.8	356.8
Rest of World	211.0		270.5		67.1	548.6
Total reportable segments	876.7		747.2		74.9	1,698.8
Six months ended June 30, 2019
Reportable Segments:
North America	$	557.0	320.0		—	877.0
South America	238.0		212.1		5.4	455.5
Rest of World	176.1		243.7		67.0	486.8
Total reportable segments	971.1		775.8		72.4	1,819.3
Not Allocated to Segments:
Acquisitions and dispositions	—		(0.3	)	—	(0.3	)
Total	$	971.1	775.5		72.4	1,819.0

Contract with Customer, Asset and Liability

The opening and closing balances of receivables, contract assets and contract liabilities related to contracts with customers are as follows:

(In millions)	Receivables		Contract Asset		Contract Liability
Opening (January 1, 2020)	$	635.6	1.9		12.8
Closing (June 30, 2020)	695.0		1.4		11.9
Increase (decrease)	$	59.4	(0.5	)	(0.9	)