Accumulated Other Comprehensive Income - Reclasses Out Of AOCI (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract]
Cost of revenues	$ 3,197.1	$ 3,024.3	$ 2,966.0
Selling, general and administrative expenses	564.0	546.7	512.4
Other operating income (expense)	9.4	(11.0)	(18.0)
Nonoperating Income (Expense)	1.6	7.2	8.9
Accumulated Other Comprehensive Income [Abstract]
Beginning balance - AOCI	(773.4)
Other comprehensive income (loss) attributable to Brink's	154.6	14.0	(179.6)
Acquisitions of Noncontrolling Interests	18.5	(10.1)
Ending Balance - AOCI	(617.3)	(773.4)
Parent [Member]
Accumulated Other Comprehensive Income [Abstract]
Beginning balance - AOCI	(773.4)	(787.9)	(610.3)
Other comprehensive income (loss) before reclassifications	109.6	(34.7)	(208.5)
Amounts reclassified from accumulated other comprehensive loss	46.8	49.2	30.9
Other comprehensive income (loss) attributable to Brink's	156.4
Acquisitions of Noncontrolling Interests	(0.3)
Ending Balance - AOCI	(617.3)	(773.4)	(787.9)
Benefit plan adjustments [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract]
Cost of revenues	66.8	64.7	41.4
Selling, general and administrative expenses	17.5	19.8	8.2
Accumulated Other Comprehensive Income [Abstract]
Beginning balance - AOCI	(665.1)	(680.1)	(550.7)
Other comprehensive income (loss) before reclassifications	137.8	(36.1)	(163.8)
Amounts reclassified from accumulated other comprehensive loss	49.3	51.1	34.4
Other comprehensive income (loss) attributable to Brink's	187.1
Acquisitions of Noncontrolling Interests	0
Ending Balance - AOCI	(478.0)	(665.1)	(680.1)
Foreign Currency Translation Adjustments [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income [Abstract]
Beginning balance - AOCI	(109.9)	(110.7)	(64.0)
Other comprehensive income (loss) before reclassifications	(30.9)	0.8	(46.7)
Amounts reclassified from accumulated other comprehensive loss	(0.4)	0	0
Other comprehensive income (loss) attributable to Brink's	(31.3)
Acquisitions of Noncontrolling Interests	(0.3)
Ending Balance - AOCI	(141.5)	(109.9)	(110.7)
Unrealized Gains (Losses) on Available-for-Sale Securities [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income [Abstract]
Beginning balance - AOCI	1.6	2.9	4.4
Other comprehensive income (loss) before reclassifications	(0.2)	0.6	2.0
Amounts reclassified from accumulated other comprehensive loss	0.2	(1.9)	(3.5)
Other comprehensive income (loss) attributable to Brink's	0
Acquisitions of Noncontrolling Interests	0
Ending Balance - AOCI	1.6	1.6	2.9
Gains (Losses) on Cash Flow Hedges [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract]
Other operating income (expense)	(3.3)
Nonoperating Income (Expense)	1.0
Accumulated Other Comprehensive Income [Abstract]
Beginning balance - AOCI	0	0	0
Other comprehensive income (loss) before reclassifications	2.9	0	0
Amounts reclassified from accumulated other comprehensive loss	(2.3)	0	0
Other comprehensive income (loss) attributable to Brink's	0.6
Acquisitions of Noncontrolling Interests	0
Ending Balance - AOCI	$ 0.6	$ 0	$ 0