Consolidated Statements of Income (Loss) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Statement [Abstract]
Revenues	$ 759.2	$ 872.5	$ 2,295.6	$ 2,681.1
Costs and expenses:
Cost of revenues	616.4	726.6	1,866.4	2,205.2
Selling, general and administrative expenses	111.1	130.6	343.4	401.9
Total costs and expenses	727.5	857.2	2,209.8	2,607.1
Other operating income (expense)	(6.4)	45.9	(62.2)	(77.8)
Operating profit (loss)	25.3	61.2	23.6	(3.8)
Interest expense	(4.8)	(6.6)	(14.4)	(18.3)
Interest and other income	0.9	0.4	1.7	1.0
Income (loss) from continuing operations before tax	21.4	55.0	10.9	(21.1)
Provision for income taxes	14.1	26.8	37.2	39.6
Income (loss) from continuing operations	7.3	28.2	(26.3)	(60.7)
Loss from discontinued operations, net of tax	(0.1)	(8.6)	(2.4)	(7.4)
Net income (loss)	7.2	19.6	(28.7)	(68.1)
Less net loss attributable to noncontrolling interests	(0.4)	(0.6)	(20.4)	(31.4)
Net income (loss) attributable to Brink’s	7.6	20.2	(8.3)	(36.7)
Amounts attributable to Brink’s
Continuing operations	7.7	28.8	(5.9)	(29.3)
Discontinued operations	(0.1)	(8.6)	(2.4)	(7.4)
Net income (loss) attributable to Brink’s	$ 7.6	$ 20.2	$ (8.3)	$ (36.7)
Basic:
Continuing operations (dollars per share)	$ 0.16	$ 0.59	$ (0.12)	$ (0.60)
Discontinued operations (dollars per share)	0.00	(0.17)	(0.05)	(0.15)
Net income (loss) (dollars per share)	0.16	0.41	(0.17)	(0.75)
Diluted:
Continuing operations (dollars per share)	0.16	0.58	(0.12)	(0.60)
Discontinued operations (dollars per share)	0.00	(0.17)	(0.05)	(0.15)
Net income (loss) (dollars per share)	$ 0.15	$ 0.41	$ (0.17)	$ (0.75)
Weighted-average shares
Basic (shares)	49.4	49.1	49.3	49.0
Diluted (shares)	49.9	49.4	49.3	49.0
Cash dividends paid per common share (dollars per share)	$ 0.1	$ 0.1	$ 0.3	$ 0.3