Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

Document and Entity Information - USD ($)
$ in Billions
12 Months Ended
Dec. 31, 2017
Feb. 02, 2018
Jul. 02, 2017
Document and Entity Information      
Entity Registrant Name CUMMINS INC    
Entity Central Index Key 0000026172    
Document Period End Date Dec. 31, 2017    
Entity Filer Category Large Accelerated Filer    
Document Type 10-K    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2017    
Document Fiscal Period Focus FY    
Amendment Flag false    
Entity Common Stock, Shares Outstanding   165,683,334  
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Public Float     $ 27.2