Annual report pursuant to Section 13 and 15(d)

DOCUMENT COVER Document

v3.20.4
DOCUMENT COVER Document - USD ($)
$ / shares in Units, $ in Billions
 12 Months Ended
Dec. 31, 2020
Jun. 28, 2020
DOCUMENT COVER [Abstract]    
Document Type 10-K  
Current Fiscal Year End Date --12-31  
Entity File Number 1-4949  
Entity Registrant Name CUMMINS INC.  
Entity Incorporation, State or Country Code IN  
Entity Tax Identification Number 35-0257090  
Entity Address, Address Line One 500 Jackson Street  
Entity Address, Address Line Two Box 3005  
Entity Address, City or Town Columbus  
Entity Address, State or Province IN  
Entity Address, Postal Zip Code 47202-3005  
City Area Code 812  
Local Phone Number 377-5000  
Title of 12(b) Security Common stock, $2.50 par value  
Trading Symbol CMI  
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   $ 24.9
Entity Common Stock, Shares Outstanding 147,657,584  
Common Stock, Par or Stated Value Per Share $ 2.50  
Entity Central Index Key 0000026172  
Document Period End Date Dec. 31, 2020  
Document Fiscal Year Focus 2020  
Document Fiscal Period Focus FY  
Document Annual Report true  
Amendment Flag false  
Document Transition Report false