Selected Quarterly Financial Data (unaudited) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Quarterly Financial Data [Abstract]
Revenues	$ 991.6	$ 950.5
Operating profit	(72.5)	17.3
Amounts Attributable To Brink's Income (Loss) From [Abstract]
Continuing operations	(58.4)	2.9
Discontinued operations	(0.1)	(19.5)
Net income attributable to Brink's	(58.5)	(16.6)
Depreciation and amortization	43.6	42.1
Capital expenditures	$ 24.3	$ 33.4
Diluted:
Continuing operations	$ (1.19)	$ 0.06
Discontinued operations	$ 0	$ (0.40)
Net income (loss)	$ (1.20)	$ (0.34)
Basic:
Continuing operations	$ (1.19)	$ 0.06
Discontinued operations	$ 0	$ (0.40)
Net income (loss)	$ (1.20)	$ (0.34)