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

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Changes in AOCI (loss) related to shareholders' equity (Details)

v3.25.4
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Changes in AOCI (loss) related to shareholders' equity (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Balance, beginning of period $ 6,867 $ 8,098 $ 8,032
Balance, end of period 6,323 6,867 8,098
Commodity Contract      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Losses (gains) reclassified from AOCI to net income (67)    
Cash-Settled Sales Swaps      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Losses (gains) reclassified from AOCI to net income (30)    
Foreign Currency Translation      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Balance, beginning of period (70) 0 (1)
Other comprehensive income (loss) before reclassifications 91 (70) 1
Income tax (4) 0 0
Other comprehensive income (loss) before reclassifications, net of tax 87 (70) 1
Balance, end of period 17 (70) 0
Derivative Instruments      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Balance, beginning of period (53) (170) (16)
Other comprehensive income (loss) before reclassifications (48) (41) (345)
Income tax 12 10 81
Other comprehensive income (loss) before reclassifications, net of tax (36) (31) (264)
Losses (gains) reclassified from AOCI to net income 97 195 144
Income tax expense (benefit) (23) (47) (34)
Net losses (gains) reclassified from AOCI to net income 74 148 110
Balance, end of period (15) (53) (170)
Pension and OPEB      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Balance, beginning of period 1,660 1,827 1,847
Other comprehensive income (loss) before reclassifications (83) (68) 115
Income tax 20 17 (39)
Other comprehensive income (loss) before reclassifications, net of tax (63) (51) 76
Losses (gains) reclassified from AOCI to net income (138) (154) (145)
Income tax expense (benefit) 31 38 49
Net losses (gains) reclassified from AOCI to net income (107) (116) (96)
Balance, end of period 1,490 1,660 1,827
AOCI (Loss)      
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]      
Balance, beginning of period 1,537 1,657 1,830
Balance, end of period $ 1,492 $ 1,537 $ 1,657