Contingencies - Estimate Timing of Cash Outflows from Environmental Reserves (Detail) - USD ($) $ in Millions |
Jun. 30, 2026 |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|---|
| Commitments and Contingencies Disclosure [Abstract] | |||
| 2026 (excluding the six months ended June 30, 2026) | $ 60 | ||
| 2027 - 2031 | 136 | ||
| Thereafter | 89 | ||
| Total | $ 285 | $ 282 | $ 220 |
| X | ||||||||||
- Definition Accrual for environmental loss contingencies undiscounted one to five year. No definition available.
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| X | ||||||||||
- Definition Total costs accrued as of the balance sheet date for environmental loss contingencies. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Undiscounted amount of accrual for environmental loss contingency to be paid after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Undiscounted amount of accrual for environmental loss contingency to be paid in remainder of current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- References No definition available.
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