Consolidated Statements of Comprehensive Income (Loss) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Statement of Income and Comprehensive Income [Abstract]
Net income (loss)	$ (9.5)us-gaap_ProfitLoss	$ (87.7)us-gaap_ProfitLoss
Benefit plan adjustments:
Benefit plan experience gains (losses)	14.2	10.5
Benefit plan prior service (costs) credits	(3.0)	(0.4)
Total benefit plan adjustments	11.2	10.1
Foreign currency translation adjustments	(50.4)	(4.2)
Gains (losses) on cash flow hedges	0	0.6
Other comprehensive income (loss), before tax	(39.2)	6.5
Provision (benefit) for income taxes	4.0us-gaap_OtherComprehensiveIncomeLossTax	3.7us-gaap_OtherComprehensiveIncomeLossTax
Other comprehensive income (loss)	(43.2)	2.8
Comprehensive income (loss)	(52.7)	(84.9)
Less comprehensive income (loss) attributable to noncontrolling interests	(7.9)	(29.9)
Comprehensive income (loss) attributable to Brink's	$ (44.8)us-gaap_ComprehensiveIncomeNetOfTax	$ (55.0)us-gaap_ComprehensiveIncomeNetOfTax

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income (loss) and other comprehensive income (loss), attributable to noncontrolling interests. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount before tax, after reclassification adjustments, of actuarial gain (loss) that has not been recognized in the income statement.

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Amount before tax, after reclassification adjustments, of prior service cost (credit) that has not been recognized in the income statement.

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Amount before tax, after reclassification adjustments of other comprehensive income (loss).

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Amount before tax, after reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Amount before tax, after reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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Amount before tax, after reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans.

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Amount of tax expense (benefit) allocated to other comprehensive income (loss).

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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