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Other Operating Charges, net (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Other Expenses	$ 700,000	$ 0	$ 0
Other Cost and Expense, Operating	9,700,000	57,700,000	14,000,000
Asset Impairment Charges	6,100,000	0	0
Increase (Decrease) in Asset Retirement Obligations	0	(1,800,000)	2,500,000
(Gain) loss on sale or impairment associated with divested assets	400,000	50,000,000.0	1,400,000
Other Restructuring Costs	1,600,000	8,400,000	3,400,000
Severance Costs		12,800,000
Restructuring Costs and Asset Impairment Charges		37,200,000
Collective-Bargaining Arrangement, Other [Member]
Payments to Employees	0	0	6,600,000
Consumer Products | Collective-Bargaining Arrangement, Other [Member]
Payments to Employees			2,600,000
Pulp And Paperboard [Member] | Collective-Bargaining Arrangement, Other [Member]
Payments to Employees			4,000,000
Director [Member]
Share-based Payment Arrangement, Expense	$ 900,000	$ 1,100,000	$ 2,900,000

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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