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Component: (Network and Table)
Network
2403405 - Disclosure - Retirement Benefits - Assumptions (Details)
(http://brinkscompany.com/role/RetirementBenefitsAssumptionsDetails)
TableSchedule of Defined Benefit Plans Disclosures [Table]
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0000078890 (http://www.sec.gov/CIK)
Defined Benefit Plan Disclosure [Line Items]Period [Axis]
2016-01-01 - 2016-12-31
2015-01-01 - 2015-12-31
2014-01-01 - 2014-12-31
Defined Benefit Plans and Other Postretirement Benefit Plans [Axis]Defined Benefit Plans and Other Postretirement Benefit Plans [Axis]Defined Benefit Plans and Other Postretirement Benefit Plans [Axis]
U.S. PlansNon-U.S. PlansUMWA PlansBlack Lung and Other PlansRetirement benefits other than pensionU.S. PlansNon-U.S. PlansUMWA PlansBlack Lung and Other PlansRetirement benefits other than pensionU.S. PlansNon-U.S. PlansUMWA PlansBlack Lung and Other PlansRetirement benefits other than pension
Pension cost
4.50%  
5.10%  
4.40%  
4.20%  
4.40%  
4.10%  
5.10%  
4.00%  
3.70%  
4.10%  
5.00%  
6.30%  
4.70%  
4.40%  
4.70%  
Benefit obligation at year end
4.30%  
3.70%  
4.10%  
3.90%  
4.20%  
4.50%  
5.10%  
4.40%  
4.20%  
4.40%  
4.10%  
5.10%  
4.00%  
3.70%  
4.10%  
Expected return on assets
7.50%  
5.65%  
  
8.25%  
7.50%  
5.58%  
  
8.25%  
8.00%  
5.83%  
  
8.25%  
Average rate of increase in salaries - pension cost
 
3.80%  
    
3.90%  
    
3.90%  
   
Average rate of increase in salaries - benefit obligation at year end
 
2.70%  
    
3.80%  
    
3.90%