Other (Income) Expense - Narrative (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended		9 Months Ended	12 Months Ended
	Jun. 30, 2025	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2025	Jun. 30, 2024	Sep. 30, 2024	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Other (Income) Expense [Line Items]
Pension settlement (credit) charge					$ 4	$ (5)
Net foreign currency exchange gains (losses)	$ (10)		$ 2		(6)	(4)
Royalty and other income	15		6		26	11
Other Expense	31	$ 36	26	$ 33	56	59	$ 95	$ 134	$ 231	$ 209
OTR
Other (Income) Expense [Line Items]
Royalty and other income	8				14
Royalty income	7				12
Turkish lira
Other (Income) Expense [Line Items]
Net foreign currency exchange gains (losses)	(11)		(1)		(13)	(4)
Euro
Other (Income) Expense [Line Items]
Net foreign currency exchange gains (losses)	(2)		$ 2		4
Miscellaneous (Income) Expense | Chemical Business
Other (Income) Expense [Line Items]
Other Expense	$ 2				$ 6
Miscellaneous (Income) Expense | Argentina
Other (Income) Expense [Line Items]
Other Expense						$ 8