Cover - USD ($) $ in Billions	12 Months Ended
	Jan. 02, 2021	Feb. 15, 2021	Jun. 26, 2020
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Jan. 02, 2021
Document Transition Report	false
Entity File Number	001-05224
Entity Registrant Name	STANLEY BLACK & DECKER, INC.
Entity Incorporation, State or Country Code	CT
Entity Tax Identification Number	06-0548860
Entity Address, Address Line One	1000 STANLEY DRIVE
Entity Address, City or Town	NEW BRITAIN
Entity Address, State or Province	CT
Entity Address, Postal Zip Code	06053
City Area Code	860
Local Phone Number	225-5111
Title of 12(b) Security	Common Stock
Trading Symbol	SWK
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 Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 21.8
Entity Common Stock, Shares Outstanding		160,893,004
Documents Incorporated by Reference	Portions of the registrant’s definitive proxy statement relating to its 2021 annual meeting of shareholders (the "2021 Proxy Statement") are incorporated by reference into Part III of this Annual Report on Form 10-K where indicated. The 2021 Proxy Statement will be filed with the U.S. Securities Exchange Commission within 120 days after the end of the fiscal year to which this report relates.
Entity Central Index Key	0000093556
Current Fiscal Year End Date	--01-02
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Amendment Flag	false