Contingencies - Changes in Carrying Value of Recorded Environmental Remediation Reserves (Detail) - USD ($) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Beginning balance			$ 220	$ 268	$ 268
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration]	Environmental remediation (O)		Environmental remediation (O)		Environmental remediation (O)
Liabilities incurred	$ 41	$ 12	$ 54	13	$ 25
Cash payments	(5)	(14)	(18)	(30)	(49)
Reversals of previously recorded liabilities	(3)	$ (11)	(3)	$ (11)	(12)
Foreign currency translation and other			2		(12)
Ending balance	$ 255		$ 255		$ 220

Accrual for environmental loss contingencies foreign currency translation gain (loss) and other.

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- Definition

Total costs accrued as of the balance sheet date for environmental loss contingencies.

+ References

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Amount of expense for newly incurred environmental loss contingencies. Includes, but is not limited to, remediation expense and interest accretion.

+ References

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Amount of expense (reversal of expense) which increases (decreases) the accrual for environmental loss contingencies from revisions in estimates to existing obligations. Excludes changes related to business acquisitions, divestitures, or currency movement.

+ References

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Amount of cash outflow to settle environmental loss contingencies.

+ References

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Indicates line item in statement of financial position that includes accrual for environmental loss contingency.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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