Other (Income) Expense - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Other (Income) Expense [Line Items]
Pension settlement (credit) charge	$ 68		$ 72	$ (5)
Net foreign currency exchange gains (losses)	(6)	$ 0	(12)	3
Royalty and other income	17	5	43	16
Other Expense	91	36	147	95
OTR
Other (Income) Expense [Line Items]
Royalty and other income	4		17
Royalty income	13		26
Turkish lira
Other (Income) Expense [Line Items]
Net foreign currency exchange gains (losses)	(5)	(5)	(17)	(7)
Euro
Other (Income) Expense [Line Items]
Net foreign currency exchange gains (losses)	1	(3)	5	2
Miscellaneous (Income) Expense | OTR
Other (Income) Expense [Line Items]
Other Expense		$ 11		11
Miscellaneous (Income) Expense | Chemical Business
Other (Income) Expense [Line Items]
Other Expense	$ 4		$ 7
Miscellaneous (Income) Expense | Argentina
Other (Income) Expense [Line Items]
Other Expense				$ 8