Quarterly report [Sections 13 or 15(d)]

REVENUE FROM CONTRACTS WITH CUSTOMERS - Summary of Revenue by External Sales (Details)

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REVENUE FROM CONTRACTS WITH CUSTOMERS - Summary of Revenue by External Sales (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Disaggregation of Revenue [Line Items]    
Total net sales $ 8,398 $ 8,174
China    
Disaggregation of Revenue [Line Items]    
Total net sales 1,000 779
India    
Disaggregation of Revenue [Line Items]    
Total net sales 471 426
Engine    
Disaggregation of Revenue [Line Items]    
Total net sales 1,966 2,040
Engine | Total on-highway    
Disaggregation of Revenue [Line Items]    
Total net sales 1,624 1,779
Engine | Heavy-duty truck    
Disaggregation of Revenue [Line Items]    
Total net sales 563 654
Engine | Medium-duty truck and bus    
Disaggregation of Revenue [Line Items]    
Total net sales 613 700
Engine | Light-duty automotive    
Disaggregation of Revenue [Line Items]    
Total net sales 448 425
Engine | Off-highway    
Disaggregation of Revenue [Line Items]    
Total net sales 342 261
Components    
Disaggregation of Revenue [Line Items]    
Total net sales 2,138 2,270
Components | Drivetrain and braking systems    
Disaggregation of Revenue [Line Items]    
Total net sales 918 1,056
Components | Emission solutions    
Disaggregation of Revenue [Line Items]    
Total net sales 807 791
Components | Components and software    
Disaggregation of Revenue [Line Items]    
Total net sales 325 306
Components | Automated transmissions    
Disaggregation of Revenue [Line Items]    
Total net sales 88 117
Distribution    
Disaggregation of Revenue [Line Items]    
Total net sales 3,109 2,902
Distribution | North America    
Disaggregation of Revenue [Line Items]    
Total net sales 2,168 2,099
Distribution | Asia Pacific    
Disaggregation of Revenue [Line Items]    
Total net sales 327 240
Distribution | Europe    
Disaggregation of Revenue [Line Items]    
Total net sales 303 269
Distribution | China    
Disaggregation of Revenue [Line Items]    
Total net sales 120 113
Distribution | India    
Disaggregation of Revenue [Line Items]    
Total net sales 84 72
Distribution | Africa and Middle East    
Disaggregation of Revenue [Line Items]    
Total net sales 56 59
Distribution | Latin America    
Disaggregation of Revenue [Line Items]    
Total net sales 51 50
Distribution | Power generation    
Disaggregation of Revenue [Line Items]    
Total net sales 1,271 1,090
Distribution | Parts    
Disaggregation of Revenue [Line Items]    
Total net sales 1,063 1,026
Distribution | Service    
Disaggregation of Revenue [Line Items]    
Total net sales 433 416
Distribution | Engines    
Disaggregation of Revenue [Line Items]    
Total net sales 342 370
Power Systems    
Disaggregation of Revenue [Line Items]    
Total net sales 1,093 872
Power Systems | Power generation    
Disaggregation of Revenue [Line Items]    
Total net sales 640 445
Power Systems | Industrial    
Disaggregation of Revenue [Line Items]    
Total net sales 293 284
Power Systems | Generator technologies    
Disaggregation of Revenue [Line Items]    
Total net sales $ 160 $ 143