Condensed Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Income Statement [Abstract]
Net sales	$ 663	$ 722	$ 2,141	$ 2,261
Cost of sales	(534)	(530)	(1,637)	(1,591)
Gross Profit	129	193	504	669
Selling, general, and administrative expenses	(95)	(75)	(250)	(215)
Other operating credits and charges, net	(2)	(1)	(6)	2
Income from operations	18	116	218	455
Loss on impairment	13	0	31	0
Non-operating income (expense):
Interest expense	(4)	(4)	(11)	(12)
Investment income	5	6	12	17
Other non-operating income (expense)	(1)	(4)	(13)	2
Income before income taxes	18	113	207	462
Provision for income taxes	(9)	(23)	(54)	(117)
Equity in unconsolidated affiliate	0	0	1	12
Net income	$ 9	$ 90	$ 154	$ 358
Net income per share of common stock:
Net income per share, basic (in dollars per share)	$ 0.13	$ 1.28	$ 2.20	$ 5.01
Net income per share, diluted (in dollars per share)	$ 0.13	$ 1.28	$ 2.20	$ 5.00
Average shares of common stock used to compute net income per share:
Basic (in shares)	70	70	70	71
Diluted (in shares)	70	71	70	72