Cover Page - shares	3 Months Ended
	Mar. 31, 2022	Apr. 27, 2022
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2022
Document Transition Report	false
Entity File Number	1-4801
Entity Registrant Name	BARNES GROUP INC
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	06-0247840
Entity Address, Address Line One	123 Main Street
Entity Address, City or Town	Bristol
Entity Address, State or Province	CT
Entity Address, Postal Zip Code	06010
City Area Code	860
Local Phone Number	583-7070
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	B
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		50,699,128
Amendment Flag	false
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q1
Entity Central Index Key	0000009984
Current Fiscal Year End Date	--12-31