SUPPLEMENTAL CASH FLOW INFORMATION - Schedule of Noncash Investing and Financing Activities (Detail) - USD ($) $ in Millions |
6 Months Ended | |
|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
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| Supplemental Cash Flow Elements [Abstract] | ||
| Acquisition of assets through asset exchange | $ 2,725 | $ 0 |
| Accrued liabilities for purchases of property, plant and equipment | 34 | 61 |
| Right-of-use assets obtained in exchange for new operating lease liabilities | 43 | 42 |
| Right-of-use assets obtained in exchange for new finance lease liabilities | 19 | 16 |
| Remeasurement of finance lease right-of-use assets | 0 | 50 |
| Remeasurement of operating lease right-of-use assets | 7 | (1) |
| Accrued fee for bridge funding commitment | 26 | 0 |
| Accrued benefits on life insurance contracts | $ 0 | $ 5 |
| X | ||||||||||
- Definition Accrued benefits on life insurance contracts. No definition available.
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| X | ||||||||||
- Definition Accrued fee for bridge funding commitment. No definition available.
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| X | ||||||||||
- Definition Remeasurement of finance lease right-of-use assets. No definition available.
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| X | ||||||||||
- Definition Remeasurement of operating leases right of use assets. No definition available.
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| X | ||||||||||
- Definition Future cash outflow to pay for purchases of fixed assets that have occurred. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The amount of fixed assets that an Entity acquires in a noncash (or part noncash) acquisition. Noncash is defined as information about all investing and financing activities of an enterprise during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of increase in right-of-use asset obtained in exchange for finance lease liability. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Amount of increase in right-of-use asset obtained in exchange for operating lease liability. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- References No definition available.
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