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Document and Entity Information - USD ($)
$ in Billions
 12 Months Ended
Dec. 28, 2019
Feb. 17, 2020
Jun. 28, 2019
Cover page.      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 28, 2019    
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    
Entity Shell Company false    
Entity Public Float     $ 21.9
Entity Common Stock, Shares Outstanding   154,025,464  
Documents Incorporated by Reference
DOCUMENTS INCORPORATED BY REFERENCE
Portions of the registrant’s definitive proxy statement relating to its 2020 annual meeting of shareholders (the "2020 Proxy Statement") are incorporated by reference into Part III of this Annual Report on Form 10-K where indicated. 		   
Entity Central Index Key 0000093556    
Current Fiscal Year End Date --12-28    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Amendment Flag false