Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net income (loss)	$ 33.2	$ (27.5)	$ 23.6
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
(Income) loss from discontinued operations, net of tax	(0.7)	0.0	0.2
Depreciation and amortization	185.0	162.3	146.6
Share-based compensation expense	42.7	28.2	17.7
Deferred income taxes	(33.3)	(20.5)	94.2
Prepayment penalties	0.0	0.0	8.3
(Gains) losses on sale of property, equipment and marketable securities	(2.9)	(7.2)	(10.7)
Gain on business dispositions	0.0	(11.2)	(0.6)
Loss on deconsolidation of Venezuela operations	0.0	126.7	0.0
Impairment losses	7.7	6.5	3.4
Retirement benefit funding (more) less than expense:
Pension	24.1	6.6	15.9
Other than pension	16.0	19.5	17.9
Remeasurement losses due to Argentina and Venezuela currency devaluations	11.3	4.0	9.1
Other operating	18.1	8.2	5.3
Changes in operating assets and liabilities, net of effects of acquisitions:
Accounts receivable and income taxes receivable	(15.8)	49.7	164.9
Accounts payable, income taxes payable and accrued liabilities	35.0	69.0	100.9
Restricted cash held for customers	23.7	44.4	44.3
Customer obligations	11.4	(1.7)	6.1
Prepaid and other current assets	(11.3)	0.3	(11.4)
Other	(7.2)	6.2	(9.5)
Net cash provided by operating activities	368.6	364.1	296.4
Cash flows from investing activities:
Capital expenditures	(164.8)	(155.1)	(174.5)
Acquisitions, net of cash acquired	(183.9)	(520.9)	(225.1)
Dispositions, net of cash disposed	11.2	8.4	1.4
Marketable securities:
Purchases	(11.8)	(62.4)	(38.0)
Sales	1.3	54.2	38.3
Cash proceeds from sale of property, equipment and investments	10.3	4.0	1.9
Redemption of cash-surrender value of life insurance policies	7.8	0.0	0.0
Other	(3.1)	(0.9)	1.1
Net cash used by investing activities	(333.0)	(672.7)	(394.9)
Cash flows from financing activities:
Short-term borrowings	(14.8)	1.3	(125.2)
Cash supply chain customer debt	0.0	(15.6)	1.5
Long-term revolving credit facilities: Borrowings	892.7	982.8	941.8
Long-term revolving credit facilities: Repayments	(1,117.8)	(642.8)	(999.9)
Other long-term debt: Borrowings	335.0	2.2	1,109.9
Other long-term debt: Repayments	(63.8)	(56.7)	(187.4)
Debt financing costs	(4.0)	0.0	(16.3)
Acquisitions of noncontrolling interests	0.0	(21.0)	0.0
Payment of acquisition-related obligation	(20.3)	(17.6)	(90.9)
Prepayment penalties	0.0	0.0	(8.3)
Repurchase shares of Brink's common stock	0.0	(93.5)	0.0
Dividends to:
Shareholders of Brink’s	(29.9)	(30.4)	(27.7)
Noncontrolling interests in subsidiaries	(2.3)	(5.2)	(4.6)
Proceeds from exercise of stock options	0.0	0.8	2.7
Tax withholdings associated with share-based compensation	8.9	11.5	10.2
Cross currency swap contract	(3.9)	0.6	1.9
Net cash provided (used) by financing activities	(38.0)	93.4	587.3
Effect of exchange rate changes on cash and cash equivalents	(8.1)	(32.2)	(0.9)
Cash, cash equivalents and restricted cash:
Increase (decrease)	(10.5)	(247.4)	487.9
Balance at beginning of period	479.5	726.9	239.0
Balance at end of period	$ 469.0	$ 479.5	$ 726.9