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Share-Based Compensation Plans, Narrative (Details) (USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended 12 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2014
Dec. 31, 2014
employees
Dec. 31, 2014
Jul. 11, 2014
Dec. 31, 2013
employees
Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of employees affected by change in policy   300us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationNumberOfEmployeesAffected        
Payment Award Plan Modification Incremental Compensation Cost $ 4.2us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationIncrementalCompensationCost          
Weighted-average exercise price per share   $ 0us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice        
Market Price per Share   $ 24.41bco_MarketPricePerShare $ 24.41bco_MarketPricePerShare      
Exercisable Options - Shares   726,700us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber 726,700us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber   1,200,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber 2,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
Exercisable Options - Exercise Price   $ 26.44us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice $ 26.44us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice   30.92us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice $ 32.15us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
Employees [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Deferred compensation plan, stock units held   292,221us-gaap_DeferredCompensationArrangementWithIndividualCommonStockReservedForFutureIssuance
/ us-gaap_TitleOfIndividualAxis
= bco_EmployeesMember
292,221us-gaap_DeferredCompensationArrangementWithIndividualCommonStockReservedForFutureIssuance
/ us-gaap_TitleOfIndividualAxis
= bco_EmployeesMember
  222,227us-gaap_DeferredCompensationArrangementWithIndividualCommonStockReservedForFutureIssuance
/ us-gaap_TitleOfIndividualAxis
= bco_EmployeesMember
 
Director [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Deferred compensation plan, stock units held   53,335us-gaap_DeferredCompensationArrangementWithIndividualCommonStockReservedForFutureIssuance
/ us-gaap_TitleOfIndividualAxis
= us-gaap_DirectorMember
53,335us-gaap_DeferredCompensationArrangementWithIndividualCommonStockReservedForFutureIssuance
/ us-gaap_TitleOfIndividualAxis
= us-gaap_DirectorMember
  72,541us-gaap_DeferredCompensationArrangementWithIndividualCommonStockReservedForFutureIssuance
/ us-gaap_TitleOfIndividualAxis
= us-gaap_DirectorMember
 
Performance Shares PSU [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of employees affected by change in policy   100us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationNumberOfEmployeesAffected
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
    100us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationNumberOfEmployeesAffected
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
 
Fair value     1,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
187,800us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
   
Vesting period   3 years        
Terms of Award   The number of shares paid out is also affected by Brink’s total shareholder return relative to the total return of a pre-established stock index over the performance period. The number of shares paid out is increased by 25% if Brink’s total shareholder return is at or above the 75th percentile of the index’s total return. The number of shares paid out is reduced by 25% if Brink’s performance is at or below the 25th percentile. The number of shares is not adjusted if Brink’s performance is between the 25th and 75th percentile.        
The weighted-average grant-date fair value   $ 24.06us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
$ 24.06us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
$ 24.06us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
   
Performance Shares PSU [Member] | Minimum [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Reward Rate Of Stock Appreciation Over Performance Period   0.00%bco_RewardRateOfStockAppreciationOverPerformancePeriod
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
       
Performance Shares PSU [Member] | Maximum [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Reward Rate Of Stock Appreciation Over Performance Period   200.00%bco_RewardRateOfStockAppreciationOverPerformancePeriod
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
       
Restricted Stock Units [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Fair value     45,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
136,700us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
   
Weighted-average fair value per share at issuance date   $ 27.91bco_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageIssuacneDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
$ 27.91bco_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageIssuacneDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
  26.17bco_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageIssuacneDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
$ 22.35bco_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageIssuacneDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
Weighted Average Discount Rate, Percent   3.00%us-gaap_WeightedAverageDiscountRatePercent
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
    3.00%us-gaap_WeightedAverageDiscountRatePercent
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
3.00%us-gaap_WeightedAverageDiscountRatePercent
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
The weighted-average grant-date fair value   $ 25.87us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
$ 25.87us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
$ 26.47us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
   
Market Share Units MSU [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Fair value       82,900us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= bco_MarketShareUnitsMember
   
Terms of Award   If the price of Brink’s stock at the end of the performance period is less than 50% of the initial price, no payout for MSUs will occur.        
The weighted-average grant-date fair value   $ 25.47us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= bco_MarketShareUnitsMember
$ 25.47us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= bco_MarketShareUnitsMember
$ 25.47us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= bco_MarketShareUnitsMember
   
Market Share Units MSU [Member] | Minimum [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Reward Rate Of Stock Appreciation Over Performance Period   0.00%bco_RewardRateOfStockAppreciationOverPerformancePeriod
/ us-gaap_AwardTypeAxis
= bco_MarketShareUnitsMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
       
Market Share Units MSU [Member] | Maximum [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Reward Rate Of Stock Appreciation Over Performance Period   150.00%bco_RewardRateOfStockAppreciationOverPerformancePeriod
/ us-gaap_AwardTypeAxis
= bco_MarketShareUnitsMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
       
Employee Stock Options [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
The weighted-average grant-date fair value   $ 5.83us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
$ 5.83us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
$ 5.74us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
   
Employee Stock Options [Member] | Employees [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting period   6 years        
Employee Stock Options [Member] | Director [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting period   10 years        
Deferred Stock Units [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Fair value   28,300us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= bco_DeferredStockUnitsMember
       
The weighted-average grant-date fair value   $ 24.7us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= bco_DeferredStockUnitsMember
$ 24.7us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= bco_DeferredStockUnitsMember
  26.8us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= bco_DeferredStockUnitsMember
$ 22.35us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= bco_DeferredStockUnitsMember