Other (Charges) Gains, Net - Schedule of Restructuring Reserve by Type of Cost (Details) - Employee Severance $ in Millions	6 Months Ended
Jun. 30, 2026 USD ($)
Restructuring Reserve [Roll Forward]
Reserve as of the beginning of the period	$ 31
Additions	46
Cash payments	(21)
Exchange rate changes	(1)
Reserve as of the end of the period	55
Engineered Materials
Restructuring Reserve [Roll Forward]
Reserve as of the beginning of the period	14
Additions	15
Cash payments	(15)
Exchange rate changes	0
Reserve as of the end of the period	14
Acetyl Chain
Restructuring Reserve [Roll Forward]
Reserve as of the beginning of the period	9
Additions	25
Cash payments	(1)
Exchange rate changes	(1)
Reserve as of the end of the period	32
Other
Restructuring Reserve [Roll Forward]
Reserve as of the beginning of the period	8
Additions	6
Cash payments	(5)
Exchange rate changes	0
Reserve as of the end of the period	$ 9

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

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- Definition

Amount of foreign currency translation gain (loss) which decreases (increases) the restructuring reserve.

+ References

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