REVENUE RECOGNITION DISAGGREGATION OF REVENUES REVENUE RECOGNITION DISAGGREGATION OF REVENUES (Tables)
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9 Months Ended | 
Sep. 30, 2018  | 
| Disaggregation of Revenue [Line Items] | 
 
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| 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. 
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   | 
Three months ended  | 
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Nine months ended  | 
 
In millions  | 
   | 
September 30,  2018  | 
   | 
September 30,  2018  | 
 
United States  | 
   | 
$  | 
3,407  | 
 
  | 
   | 
$  | 
9,829  | 
 
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China  | 
   | 
559  | 
 
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   | 
1,753  | 
 
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India  | 
   | 
240  | 
 
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   | 
722  | 
 
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Other International  | 
   | 
1,737  | 
 
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   | 
5,341  | 
 
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Total net sales  | 
   | 
$  | 
5,943  | 
 
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   | 
$  | 
17,645  | 
 
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| Engine | 
 
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| Disaggregation of Revenue [Line Items] | 
 
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| Revenue from External Customers by Market | 
Engine segment external sales by market were as follows:
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Three months ended  | 
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Nine months ended  | 
 
In millions  | 
   | 
September 30,  2018  | 
   | 
September 30,  2018  | 
 
Heavy-duty truck  | 
   | 
$  | 
769  | 
 
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   | 
$  | 
2,113  | 
 
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Medium-duty truck and bus  | 
   | 
613  | 
 
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   | 
1,954  | 
 
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Light-duty automotive  | 
   | 
446  | 
 
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   | 
1,099  | 
 
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Total on-highway  | 
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1,828  | 
 
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   | 
5,166  | 
 
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Off-highway  | 
   | 
254  | 
 
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   | 
779  | 
 
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Total sales  | 
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$  | 
2,082  | 
 
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   | 
$  | 
5,945  | 
 
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| Distribution | 
 
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| Disaggregation of Revenue [Line Items] | 
 
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| Revenue from External Customers by Geographic Areas | 
Distribution segment external sales by region were as follows:
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   | 
   | 
Three months ended  | 
   | 
Nine months ended  | 
 
In millions  | 
   | 
September 30,  2018  | 
   | 
September 30,  2018  | 
 
North America  | 
   | 
$  | 
1,331  | 
 
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$  | 
3,954  | 
 
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Asia Pacific  | 
   | 
223  | 
 
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   | 
621  | 
 
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Europe  | 
   | 
113  | 
 
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   | 
387  | 
 
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China  | 
   | 
77  | 
 
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   | 
238  | 
 
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Africa and Middle East  | 
   | 
55  | 
 
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   | 
178  | 
 
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India  | 
   | 
49  | 
 
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   | 
142  | 
 
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Latin America  | 
   | 
42  | 
 
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   | 
125  | 
 
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Russia  | 
   | 
37  | 
 
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   | 
117  | 
 
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Total sales  | 
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$  | 
1,927  | 
 
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$  | 
5,762  | 
 
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| Revenue from External Customers by Products and Services | 
Distribution segment external sales by product line were as follows:
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   | 
Three months ended  | 
   | 
Nine months ended  | 
 
In millions  | 
   | 
September 30,  2018  | 
   | 
September 30,  2018  | 
 
Parts  | 
   | 
$  | 
797  | 
 
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$  | 
2,415  | 
 
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Engines  | 
   | 
399  | 
 
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   | 
1,227  | 
 
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Service  | 
   | 
372  | 
 
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   | 
1,091  | 
 
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Power generation  | 
   | 
359  | 
 
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   | 
1,029  | 
 
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Total sales  | 
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$  | 
1,927  | 
 
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$  | 
5,762  | 
 
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| Components | 
 
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| Disaggregation of Revenue [Line Items] | 
 
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| Revenue from External Customers by Products and Services | 
Components segment external sales by business were as follows:
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Three months ended  | 
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Nine months ended  | 
 
In millions  | 
   | 
September 30,  2018  | 
   | 
September 30,  2018  | 
 
Emission solutions  | 
   | 
$  | 
677  | 
 
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$  | 
2,096  | 
 
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Turbo technologies  | 
   | 
173  | 
 
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   | 
571  | 
 
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Filtration  | 
   | 
242  | 
 
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   | 
756  | 
 
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Automated transmissions  | 
   | 
150  | 
 
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   | 
408  | 
 
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Electronics and fuel systems  | 
   | 
55  | 
 
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   | 
181  | 
 
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Total sales  | 
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$  | 
1,297  | 
 
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   | 
$  | 
4,012  | 
 
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| Power Systems | 
 
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| Disaggregation of Revenue [Line Items] | 
 
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| Revenue from External Customers by Products and Services | 
Power Systems segment external sales by product line were as follows:
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   | 
   | 
Three months ended  | 
   | 
Nine months ended  | 
 
In millions  | 
   | 
September 30,  2018  | 
   | 
September 30,  2018  | 
 
Power generation  | 
   | 
$  | 
366  | 
 
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$  | 
1,066  | 
 
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Industrial  | 
   | 
184  | 
 
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   | 
593  | 
 
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Generator technologies  | 
   | 
86  | 
 
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   | 
263  | 
 
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Total sales  | 
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$  | 
636  | 
 
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$  | 
1,922  | 
 
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