Quarterly report [Sections 13 or 15(d)]

EQUITY, ROYALTY AND INTEREST INCOME FROM INVESTEES (Details)

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EQUITY, ROYALTY AND INTEREST INCOME FROM INVESTEES (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Schedule of Equity Method Investments [Line Items]          
Equity, royalty and interest income from investees (Note 4) $ 118 $ 103 $ 249 $ 226  
Total Joint Venture Contribution 255   255    
Total Remaining Joint Venture Contribution 551   551    
Investments and advances related to equity method investees 2,018   2,018   $ 1,889
Chongqing Cummins Engine Company, Ltd.          
Schedule of Equity Method Investments [Line Items]          
Equity, royalty and interest income from investees (Note 4) 22 21 45 36  
Dongfeng Cummins Engine Company Ltd          
Schedule of Equity Method Investments [Line Items]          
Equity, royalty and interest income from investees (Note 4) 19 15 39 37  
Beijing Foton Cummins Engine Company          
Schedule of Equity Method Investments [Line Items]          
Equity, royalty and interest income from investees (Note 4) 15 10 30 23  
Tata Cummins, Ltd.          
Schedule of Equity Method Investments [Line Items]          
Equity, royalty and interest income from investees (Note 4) 7 7 17 16  
All other manufacturers          
Schedule of Equity Method Investments [Line Items]          
Equity, royalty and interest income from investees (Note 4) 14 11 21 34  
Komatsu Cummins Chile, Ltda. (Distribution)          
Schedule of Equity Method Investments [Line Items]          
Equity, royalty and interest income from investees (Note 4) 15 14 29 27  
All other distributors          
Schedule of Equity Method Investments [Line Items]          
Equity, royalty and interest income from investees (Note 4) 4 2 12 7  
Cummin's Share of Equity Earnings          
Schedule of Equity Method Investments [Line Items]          
Equity, royalty and interest income from investees (Note 4) $ 96 80 $ 193 180  
Battery Joint Venture Commitment          
Schedule of Equity Method Investments [Line Items]          
Equity Method Investment, Ownership Percentage 30.00%   30.00%    
Partners Investment Ownership Percentage 10.00%   10.00%    
Amplify Cell Technologies, LLC          
Schedule of Equity Method Investments [Line Items]          
Investments and advances related to equity method investees $ 220   $ 220    
Royalty and interest income          
Schedule of Equity Method Investments [Line Items]          
Equity, royalty and interest income from investees (Note 4) $ 22 $ 23 $ 56 $ 46