Other Operating Credits and Charges, Net Non-Operating Income and Expense (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Interest Expense, Operating and Nonoperating		$ 14	$ 17	$ 14
Amortization of financing costs and discounts		1	1	1
Interest Costs Capitalized Adjustment		1	4	5
Interest expense, net of capitalized interest		(14)	(14)	(11)
Investment Income, Interest and Dividend		22	18	14
Investment income		22	18	14
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component		0	0	6
Foreign Currency Transaction Gain (Loss), Realized		(9)	40	11
Loss due to settlement		0	(4)	(82)
Gain on Acquisition		0		2
Other nonoperating items		9	(43)	(97)
Severance Costs		2	8	7
Insurance and environmental recoveries				2
Proceeds from Insurance Settlement, Operating Activities		0	0	$ 15
Proceeds from Legal Settlements		$ 3
Argentina, Pesos
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Foreign Currency Transaction Gain (Loss), Realized			$ 32
Entekra [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Gain on Acquisition	$ 1