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Transactions With Related Party - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Related Party Transaction [Line Items]
Sales	$ 1,834,441	$ 2,154,647	$ 5,193,989	$ 6,759,001
Unconsolidated variable interest entity
Related Party Transaction [Line Items]
Sales	2,900	3,400	9,000	10,600
Cost of sales from related party	$ 20,300	$ 23,100	$ 61,500	$ 67,400
Louisiana Timber Procurement Company LLC | Unconsolidated variable interest entity
Related Party Transaction [Line Items]
Variable interest entity, ownership percentage			50.00%
Louisiana Timber Procurement Company LLC | Packaging Corporation of America (PCA) | Variable Interest Entity, Primary Beneficiary
Related Party Transaction [Line Items]
Variable interest entity, ownership percentage			50.00%

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