v3.26.3
OTHER COMPREHENSIVE INCOME (LOSS) - Schedule of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning balance $ 14,455 $ 18,617 $ 14,827 $ 8,173
Ending balance 13,146 17,317 13,146 17,317
Accumulated Other Comprehensive Income (Loss)        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning balance (485) (672) (528) (1,722)
Ending balance (444) (646) (444) (646)
Defined Benefit Pension and Postretirement Adjustments        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning balance (1,061) (1,272) (1,099) (1,312)
Amounts reclassified from accumulated other comprehensive income (loss) 14 16 52 56
Ending balance (1,047) (1,256) (1,047) (1,256)
Change in Cumulative Foreign Currency Translation Adjustments        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning balance 542 653 630 (402)
Amounts reclassified from accumulated other comprehensive income (loss) 0 0 2 0
Other comprehensive income (loss) before reclassifications (84) 4 (174) 1,059
Ending balance 458 657 458 657
Net Gains and Losses on Cash Flow Hedging Derivatives        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Beginning balance 34 (53) (59) (8)
Amounts reclassified from accumulated other comprehensive income (loss) (44) 8 (43) 15
Other comprehensive income (loss) before reclassifications 155 (2) 247 (54)
Ending balance $ 145 $ (47) $ 145 $ (47)