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The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Condensed Cash Flow Statements, Captions [Line Items]
Interest	$ 107.7	$ 80.4	$ 84.2
Income taxes, net	83.8	76.8	23.9
Payments to acquire marketable securities	15.6	2.9	11.8
Financing Leases	85.9	31.4	59.7
Payment of acquisition-related obligation	(4.0)	(7.3)	(20.3)
Restricted cash	376.4	322.0
Cash and cash equivalents	710.3	620.9
Cash, Cash Equivalents, and Restricted Cash	1,086.7	942.9	$ 469.0	$ 479.5
Revolving Credit Facility
Condensed Cash Flow Statements, Captions [Line Items]
Restricted cash	15.0	5.0
Cash Held From Customers
Condensed Cash Flow Statements, Captions [Line Items]
Restricted cash	215.5	199.5
Deposits Liability
Condensed Cash Flow Statements, Captions [Line Items]
Restricted cash	139.9	113.7
Maco
Condensed Cash Flow Statements, Captions [Line Items]
Payment of acquisition-related obligation		(15.6)
Rodoban
Condensed Cash Flow Statements, Captions [Line Items]
Payment of acquisition-related obligation		(2.6)
TVS
Condensed Cash Flow Statements, Captions [Line Items]
Payment of acquisition-related obligation		(7.3)
G4S
Condensed Cash Flow Statements, Captions [Line Items]
Payment of acquisition-related obligation	(3.2)
Restricted cash	30.1
PAI
Condensed Cash Flow Statements, Captions [Line Items]
Payment of acquisition-related obligation	(1.1)
Argentina, Pesos \| ARGENTINA
Condensed Cash Flow Statements, Captions [Line Items]
Purchase of currency conversion instruments	20.5	23.6
Payments to acquire marketable securities	12.9
Proceeds from sale of currency conversion instruments	10.1	18.9
Cash and cash equivalents	$ 52.9	$ 24.4