Document and Entity Information - shares	9 Months Ended
	Sep. 28, 2019	Oct. 18, 2019
Document Information [Line Items]
Title of 12(b) Security	Common Stock
Entity Address, Address Line One	1000 STANLEY DRIVE
Entity Incorporation, State or Country Code	CT
Entity Tax Identification Number	06-0548860
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	001-05224
Document Period End Date	Sep. 28, 2019
Amendment Flag	false
Entity Common Stock, Shares Outstanding		152,011,804
City Area Code	860
Local Phone Number	225-5111
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Shell Company	false
Entity Address, City or Town	NEW BRITAIN
Entity Address, State or Province	CT
Entity Address, Postal Zip Code	06053
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Trading Symbol	SWK
Entity Registrant Name	STANLEY BLACK & DECKER, INC.
Entity Central Index Key	0000093556
Current Fiscal Year End Date	--12-28
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Security Exchange Name	NYSE