Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Income Statement [Abstract]
Revenues		$ 739.5	$ 760.3	$ 1,461.3	$ 1,536.4
Costs and expenses:
Cost of revenues		604.5	620.9	1,201.5	1,250.0
Selling, general and administrative expenses		106.7	120.0	217.0	232.3
Total costs and expenses		711.2	740.9	1,418.5	1,482.3
Other operating expense		6.2	34.0	6.9	55.8
Operating profit (loss)		22.1	(14.6)	35.9	(1.7)
Interest expense		(4.9)	(4.7)	(9.8)	(9.6)
Interest and other income		0.7	0.4	0.7	0.8
Income (loss) from continuing operations before tax		17.9	(18.9)	26.8	(10.5)
Provision for income taxes		14.5	7.6	23.9	23.1
Income (loss) from continuing operations		3.4	(26.5)	2.9	(33.6)
Income (loss) from discontinued operations, net of tax		0.0	0.1	0.0	(2.3)
Net income (loss)		3.4	(26.4)	2.9	(35.9)
Less net income (loss) attributable to noncontrolling interests		3.1	(13.5)	5.7	(20.0)
Net income (loss) attributable to Brink’s		0.3	(12.9)	(2.8)	(15.9)
Amounts attributable to Brink’s
Continuing operations		0.3	(13.0)	(2.8)	(13.6)
Discontinued operations		0.0	0.1	0.0	(2.3)
Net income (loss) attributable to Brink’s		$ 0.3	$ (12.9)	$ (2.8)	$ (15.9)
Basic:
Continuing operations (dollars per share)	[1]	$ 0.01	$ (0.26)	$ (0.06)	$ (0.28)
Discontinued operations (dollars per share)	[1]	0.00	0.00	0.00	(0.05)
Net income (loss) (dollars per share)	[1]	0.01	(0.26)	(0.06)	(0.32)
Diluted:
Continuing operations (dollars per share)	[1]	0.01	(0.26)	(0.06)	(0.28)
Discontinued operations (dollars per share)	[1]	0.00	0.00	0.00	(0.05)
Net income (loss) (dollars per share)	[1]	$ 0.01	$ (0.26)	$ (0.06)	$ (0.32)
Weighted-average shares
Basic (shares)		49.9	49.3	49.7	49.2
Diluted (shares)		50.3	49.3	49.7	49.2
Cash dividends paid per common share (dollars per share)		$ 0.1	$ 0.1	$ 0.2	$ 0.2

[1] Amounts may not add due to rounding.