Other Operating Credits and Charges, Net Non-Operating Income and Expense (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Interest Expense		$ 17,000,000	$ 14,000,000	$ 15,000,000
Amortization of financing costs and discounts		1,000,000	1,000,000	2,000,000
Interest Costs Capitalized Adjustment		4,000,000	5,000,000	3,000,000
Interest expense, net of capitalized interest		(14,000,000)	(11,000,000)	(14,000,000)
Investment Income, Interest and Dividend		18,000,000	14,000,000	1,000,000
Investment income		18,000,000	14,000,000	1,000,000
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component		0	6,000,000	1,000,000
Foreign Currency Transaction Gain (Loss), Realized		40,000,000	11,000,000	8,000,000
Loss on early debt extinguishment		0	0	11,000,000
Loss due to settlement		(4,000,000)	(82,000,000)	(2,000,000)
Gain on Acquisition		1,000,000		0
Other nonoperating items		(43,000,000)	(97,000,000)	(22,000,000)
Redemption Premium				9,000,000
Write off of deferred debt issuance cost				2,000,000
Severance Costs		8,000,000	7,000,000	1,000,000
Insurance and environmental recoveries		0	2,000,000	4,000,000
Proceeds from Insurance Settlement, Operating Activities		0	$ 15,000,000	$ 4,000,000
Argentina, Pesos
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Foreign Currency Transaction Gain (Loss), Realized		$ (32,000,000)
Entekra [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Gain on Acquisition	$ 2,000,000