| REVENUE RECOGNITION DISAGGREGATION OF REVENUES (Tables)
 | 6 Months Ended | 
| Jun. 30, 2023 | 
|---|
| Disaggregation of Revenue [Line Items] |  | 
| Revenue from External Customers by Geographic Areas | The table below presents our consolidated sales by geographic area. Net sales attributed to geographic areas were based on the location of the customer.  
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  
|  |  | Three months ended |  | Six months ended |  
|  |  | June 30, |  | June 30, |  
| In millions |  | 2023 |  | 2022 |  | 2023 |  | 2022 |  
| United States |  | $ | 4,937 |  |  | $ | 3,788 |  |  | $ | 9,739 |  |  | $ | 7,245 |  |  
|  |  |  |  |  |  |  |  |  |  
| China |  | 762 |  |  | 520 |  |  | 1,552 |  |  | 1,173 |  |  
|  |  |  |  |  |  |  |  |  |  
|  |  |  |  |  |  |  |  |  |  
| India |  | 413 |  |  | 311 |  |  | 824 |  |  | 620 |  |  
|  |  |  |  |  |  |  |  |  |  
| Other international |  | 2,526 |  |  | 1,967 |  |  | 4,976 |  |  | 3,933 |  |  
| Total net sales |  | $ | 8,638 |  |  | $ | 6,586 |  |  | $ | 17,091 |  |  | $ | 12,971 |  |  
|  |  |  |  |  |  |  |  |  |  
|  |  |  |  |  |  |  |  |  |  | 
| Components |  | 
| Disaggregation of Revenue [Line Items] |  | 
| Revenue from External Customers by Products and Services | Components segment external sales by business were as follows: 
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  
|  |  | Three months ended |  | Six months ended |  
|  |  | June 30, |  | June 30, |  
| In millions |  | 2023 |  | 2022 |  | 2023 |  | 2022 |  
| Axles and brakes |  | $ | 1,249 |  |  | $ | — |  |  | $ | 2,521 |  |  | $ | — |  |  
| Emission solutions |  | 842 |  |  | 767 |  |  | 1,781 |  |  | 1,575 |  |  
| Atmus |  | 341 |  |  | 319 |  |  | 683 |  |  | 627 |  |  
| Engine components |  | 283 |  |  | 223 |  |  | 575 |  |  | 463 |  |  
| Automated transmissions |  | 180 |  |  | 143 |  |  | 358 |  |  | 277 |  |  
| Software and electronics |  | 29 |  |  | 25 |  |  | 49 |  |  | 52 |  |  
| Total sales |  | $ | 2,924 |  |  | $ | 1,477 |  |  | $ | 5,967 |  |  | $ | 2,994 |  |  
|  |  |  |  |  |  |  |  |  |  |  |  | 
| Engine |  | 
| Disaggregation of Revenue [Line Items] |  | 
| Revenue from External Customers by Market | Engine segment external sales by market were as follows: 
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  
|  |  | Three months ended |  | Six months ended |  
|  |  | June 30, |  | June 30, |  
| In millions |  | 2023 |  | 2022 |  | 2023 |  | 2022 |  
| Heavy-duty truck |  | $ | 856 |  |  | $ | 797 |  |  | $ | 1,716 |  |  | $ | 1,481 |  |  
| Medium-duty truck and bus |  | 687 |  |  | 620 |  |  | 1,304 |  |  | 1,211 |  |  
| Light-duty automotive |  | 444 |  |  | 425 |  |  | 885 |  |  | 912 |  |  
| Total on-highway |  | 1,987 |  |  | 1,842 |  |  | 3,905 |  |  | 3,604 |  |  
| Off-highway |  | 276 |  |  | 250 |  |  | 610 |  |  | 537 |  |  
| Total sales |  | $ | 2,263 |  |  | $ | 2,092 |  |  | $ | 4,515 |  |  | $ | 4,141 |  |  
|  |  |  |  |  |  |  |  |  |  | 
| Distribution |  | 
| Disaggregation of Revenue [Line Items] |  | 
| Revenue from External Customers by Geographic Areas | Distribution segment external sales by region were as follows:  
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  
|  |  | Three months ended |  | Six months ended |  
|  |  | June 30, |  | June 30, |  
| In millions |  | 2023 |  | 2022 |  | 2023 |  | 2022 |  
| North America |  | $ | 1,783 |  |  | $ | 1,491 |  |  | $ | 3,476 |  |  | $ | 2,862 |  |  
| Asia Pacific |  | 265 |  |  | 242 |  |  | 504 |  |  | 486 |  |  
| Europe |  | 213 |  |  | 246 |  |  | 407 |  |  | 521 |  |  
| China |  | 112 |  |  | 99 |  |  | 213 |  |  | 181 |  |  
| Africa and Middle East |  | 80 |  |  | 61 |  |  | 142 |  |  | 111 |  |  
| India |  | 63 |  |  | 52 |  |  | 120 |  |  | 100 |  |  
| Latin America |  | 60 |  |  | 56 |  |  | 113 |  |  | 97 |  |  
|  |  |  |  |  |  |  |  |  |  
| Total sales |  | $ | 2,576 |  |  | $ | 2,247 |  |  | $ | 4,975 |  |  | $ | 4,358 |  |  
|  |  |  |  |  
|  |  |  |  |  |  |  |  |  |  |  |  
|  |  |  |  |  |  |  |  |  |  | 
| Revenue from External Customers by Products and Services | Distribution segment external sales by product line were as follows: 
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  
|  |  | Three months ended |  | Six months ended |  
|  |  | June 30, |  | June 30, |  
| In millions |  | 2023 |  | 2022 |  | 2023 |  | 2022 |  
| Parts |  | $ | 1,011 |  |  | $ | 987 |  |  | $ | 2,063 |  |  | $ | 1,913 |  |  
| Power generation |  | 609 |  |  | 440 |  |  | 1,100 |  |  | 838 |  |  
| Engines |  | 527 |  |  | 428 |  |  | 983 |  |  | 866 |  |  
| Service |  | 429 |  |  | 392 |  |  | 829 |  |  | 741 |  |  
| Total sales |  | $ | 2,576 |  |  | $ | 2,247 |  |  | $ | 4,975 |  |  | $ | 4,358 |  |  
|  |  |  |  |  |  |  |  |  |  | 
| Power Systems |  | 
| Disaggregation of Revenue [Line Items] |  | 
| Revenue from External Customers by Products and Services | Power Systems segment external sales by product line were as follows: 
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  
|  |  | Three months ended |  | Six months ended |  
|  |  | June 30, |  | June 30, |  
| In millions |  | 2023 |  | 2022 |  | 2023 |  | 2022 |  
| Power generation |  | $ | 447 |  |  | $ | 408 |  |  | $ | 827 |  |  | $ | 807 |  |  
| Industrial |  | 218 |  |  | 213 |  |  | 407 |  |  | 401 |  |  
| Generator technologies |  | 129 |  |  | 113 |  |  | 239 |  |  | 209 |  |  
| Total sales |  | $ | 794 |  |  | $ | 734 |  |  | $ | 1,473 |  |  | $ | 1,417 |  |  
|  |  |  |  |  |  |  |  |  |  |