Cover page - USD ($)	12 Months Ended
	Dec. 31, 2019	Feb. 24, 2020	Jun. 28, 2019
Cover page.
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2019
Document Transition Report	false
Entity File Number	001-09148
Entity Registrant Name	BRINK’S CO
Entity Incorporation, State or Country Code	VA
Entity Tax Identification Number	54-1317776
Entity Address, Address Line One	1801 Bayberry Court
Entity Address, City or Town	Richmond
Entity Address, State or Province	VA
Entity Address, Postal Zip Code	23226-8100
City Area Code	804
Local Phone Number	289-9600
Title of 12(b) Security	Common Stock, par value $1.00 per share
Trading Symbol	BCO
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Smaller Reporting Company	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		50,165,320
Entity Public Float			$ 4,016,051,640
Document Fiscal Year Focus	2019
Amendment Flag	false
Document Fiscal Period Focus	FY
Entity Central Index Key	0000078890
Current Fiscal Year End Date	--12-31