v3.26.1
ACCOUNTING POLICIES - Changes in Accumulated Other Comprehensive Earnings (Loss) Net of Tax (Detail) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning Balance $ 11,297 $ 9,084 $ 10,034 $ 9,456
Other comprehensive earnings (loss) before reclassifications, net of tax     48  
Other comprehensive earnings (loss), net of tax 41 3 34 4
Ending Balance 11,548 9,366 11,548 9,366
Pension and Postretirement Benefit Plans        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning Balance 63 (8) 62 (9)
Other comprehensive earnings (loss) before reclassifications, net of tax 48 0 48 0
Amounts reclassified from accumulated other comprehensive earnings, net of tax 1 1 2 2
Other comprehensive earnings (loss), net of tax 49 1 50 2
Ending Balance 112 (7) 112 (7)
Foreign Currency        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning Balance (10) (4) (2) (4)
Other comprehensive earnings (loss) before reclassifications, net of tax (8) 2 (16) 2
Amounts reclassified from accumulated other comprehensive earnings, net of tax 0 0 0 0
Other comprehensive earnings (loss), net of tax (8) 2 (16) 2
Ending Balance (18) (2) (18) (2)
Accumulated Other Comprehensive Earnings (Loss)        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning Balance 53 (12) 60 (13)
Other comprehensive earnings (loss) before reclassifications, net of tax 40 2 32 2
Amounts reclassified from accumulated other comprehensive earnings, net of tax 1 1 2 2
Other comprehensive earnings (loss), net of tax 41 3 34 4
Ending Balance $ 94 $ (9) $ 94 $ (9)