Revenue from contracts with customers (Tables)

3 Months Ended

Mar. 31, 2022

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 March 31, 2022
Reportable Segments:
North America	$	185.6	183.2	—	368.8
Latin America	172.4		113.5	5.4	291.3
Europe	103.9		84.7	33.5	222.1
Rest of World	54.7		124.3	12.8	191.8
Total reportable segments	$	516.6	505.7	51.7	1,074.0
Three months ended March 31, 2021
Reportable Segments:
North America	$	179.4	137.7	—	317.1
Latin America	160.2		105.5	4.0	269.7
Europe	111.3		71.1	32.0	214.4
Rest of World	54.6		111.7	10.2	176.5
Total reportable segments	$	505.5	426.0	46.2	977.7

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 Assets	Contract Liabilities
Opening (January 1, 2022)	$	701.8	6.3	17.9
Closing (March 31, 2022)	771.1		7.7	18.2
Increase (decrease)	$	69.3	1.4	0.3