Selected Segment Data - Net Income To Adjusted EBITA Reconciliation (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Segment Reporting [Abstract]
Net income	$ 9	$ 90	$ 154	$ 358
Provision for income taxes	9	23	54	117
Depreciation and amortization	36	31	106	93
Other Selling, General and Administrative Expense	12	4	24	15
Other operating income (expense) exclusive of product discontinuance charges	1	1	5	2
Loss on impairment	1	0	(1)	(14)
Interest Expense	4	4	11	12
Investment income	(5)	(6)	(12)	(17)
Other Nonoperating Income Expense, Net of Debt Extinguishment	1	4	13	(2)
Adjusted EBITDA	82	153	386	564
Loss on impairment	$ 13	$ 0	$ 31	$ 0