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Transactions With Related Party (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Related Party Transaction [Line Items]
Sales	$ 1,667,806	$ 1,713,724	$ 4,944,414	$ 5,156,814
Unconsolidated variable interest entity
Related Party Transaction [Line Items]
Sales	2,700	2,600	6,500	8,300
Cost of sales from related party	$ 21,500	$ 22,100	$ 54,300	$ 63,200
Louisiana Timber Procurement Company LLC | Variable Interest Entity, Primary Beneficiary | Packaging Corporation of America (PCA)
Related Party Transaction [Line Items]
Variable interest entity, ownership percentage			50.00%
Louisiana Timber Procurement Company LLC | Unconsolidated variable interest entity
Related Party Transaction [Line Items]
Variable interest entity, ownership percentage			50.00%

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