Acquisitions, Dispositions and Plant Closures Plant Closures - Schedule of Exit and Shutdown Cost Related to Closure (Details) - Lanaken Belgium - Acetyl Chain $ in Millions	3 Months Ended
	Mar. 31, 2026 USD ($)
Restructuring Cost and Reserve [Line Items]
Additions	$ 8
Accelerated depreciation expense	19	[1]
Plant Shutdown Costs	27
Restructuring and Related Cost, Expected Cost Remaining	$ 100

[1] Included in Cost of sales in the unaudited interim consolidated statements of operations.