Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 7.2	$ 19.6	$ (28.7)	$ (68.1)
Benefit plan adjustments:
Benefit plan experience gains	14.0	9.4	41.6	29.0
Benefit plan prior service cost	(0.4)	(0.4)	(3.9)	(1.3)
Deferred profit sharing	(0.1)	(0.1)	0.1	(0.1)
Total benefit plan adjustments	13.5	8.9	37.8	27.6
Foreign currency translation adjustments	(39.8)	(50.4)	(83.3)	(46.3)
Unrealized net losses on available-for-sale securities	(0.4)	(0.3)	(0.5)	(0.4)
Losses on cash flow hedges	(0.4)	(0.1)	0.0	(0.1)
Other comprehensive loss before tax	(27.1)	(41.9)	(46.0)	(19.2)
Provision for income taxes	4.5	3.3	13.0	10.3
Other comprehensive loss	(31.6)	(45.2)	(59.0)	(29.5)
Comprehensive loss	(24.4)	(25.6)	(87.7)	(97.6)
Less comprehensive loss attributable to noncontrolling interests	(2.7)	(2.7)	(23.6)	(33.1)
Comprehensive loss attributable to Brink's	$ (21.7)	$ (22.9)	$ (64.1)	$ (64.5)