Annual report [Section 13 and 15(d), not S-K Item 405]

OPERATING SEGMENTS - (Details 2) Net Asset Reconciliation, Geographic Information and Largest Customer

v3.25.4
OPERATING SEGMENTS - (Details 2) Net Asset Reconciliation, Geographic Information and Largest Customer - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Segment reporting      
Net assets for reportable segments $ 16,581 $ 15,244  
Cash, cash equivalents and marketable securities 3,609 2,264  
Net liabilities deducted in arriving at net segment assets (1) 12,597 12,556  
Pension and other postretirement adjustments excluded from net assets 136 352  
Deferred income taxes 1,063 1,119  
Debt-related costs not allocated to segments 6 5  
Assets 33,992 31,540  
Long-lived assets 10,559 9,711  
Net sales 33,670 34,102 $ 34,065
UNITED STATES      
Segment reporting      
Long-lived assets 6,317 5,751  
Net sales 18,974 19,422 19,302
CHINA      
Segment reporting      
Long-lived assets 1,010 968  
Net sales 3,298 2,948 3,115
INDIA      
Segment reporting      
Long-lived assets 598 566  
Net sales 1,721 1,779 1,678
UNITED KINGDOM      
Segment reporting      
Long-lived assets 580 494  
Other foreign countries      
Segment reporting      
Long-lived assets 2,054 1,932  
Net sales 9,677 9,953 9,970
Revenue Benchmark      
Segment reporting      
Net sales $ 4,400 $ 5,400 $ 5,500
Revenue Benchmark | Customer Concentration Risk | PACCAR Inc.      
Segment reporting      
Concentration Risk, Percentage 13.00% 16.00% 16.00%