Consolidated Statements of Comprehensive Income (Loss) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Statement of Income and Comprehensive Income [Abstract]
Net income (loss)	$ 32.0	$ 18.2	$ 31.1	$ 74.1
Benefit plan adjustments:
Benefit plan experience gains (losses)	13.6	14.8	49.0	45.5
Benefit plan prior service (costs) credits	5.4	1.3	6.7	(9.1)
Deferred profit sharing	0	0.2	0	0.5
Total benefit plan adjustments	19.0	16.3	55.7	36.9
Foreign currency translation adjustments	8.2	11.9	(23.9)	1.0
Unrealized gains (losses) on available-for-sale securities	0.3	(0.4)	0.2	(2.0)
Gains (losses) on cash flow hedges	0.3	0	1.1	0
Other comprehensive income (loss), before tax	27.8	27.8	33.1	35.9
Provision (benefit) for income taxes	6.9	5.5	19.8	12.8
Other comprehensive income (loss)	20.9	22.3	13.3	23.1
Comprehensive income (loss)	52.9	40.5	44.4	97.2
Less comprehensive income (loss) attributable to noncontrolling interests	8.9	5.6	14.1	12.0
Comprehensive income (loss) attributable to Brink's	$ 44.0	$ 34.9	$ 30.3	$ 85.2