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SPECIAL CHARGES (CREDITS) - Schedule of Components of Special Charges (Credits) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
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Sep. 30, 2025 | Jun. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Restructuring and Related Activities [Abstract] |  |  |  |  |
Labor contract ratification bonuses | $ 0 | $ 561 | $ 0 | $ 561 | $ 0
(Gains) losses on sale of assets and other special charges | (73) |  | (5) | (295) | 44
Total operating special charges (credits) | (73) |  | (5) | 266 | 44
Nonoperating unrealized losses on investments, net | 13 |  | 90 | 8 | 160
Nonoperating debt extinguishment and modification fees | 20 |  | 75 | 20 | 110
Total nonoperating special charges and unrealized losses on investments, net | 33 |  | 165 | 28 | 270
Total operating and nonoperating special charges (credits) and unrealized losses on investments, net | (40) |  | 160 | 295 | 314
Income tax benefit, net of valuation allowance | 0 |  | (15) | (127) | (34)
Total operating and nonoperating special charges (credits) and unrealized losses on investments, net of income taxes | $ (40) |  | $ 145 | $ 168 | $ 280

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- Definition Debt Extinguishment and Modification Fees, Non-Operating + References No definition available. + Details
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- Definition Amount of gain (loss) on sale of other assets and other miscellaneous charges. + References No definition available. + Details
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- Definition Labor Contract Ratification Bonus + References No definition available. + Details
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- Definition Special Charges (Credits) And Losses On Financial Instruments, Operating And Nonoperating, Before Tax + References No definition available. + Details
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- Definition Total special items in the period. + References No definition available. + Details
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- References No definition available. + Details
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- Definition Amount of restructuring charges, remediation cost, and asset impairment loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(3)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 + Details
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