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Transactions With Related Party (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Unconsolidated variable interest entity [Member]
Related Party Transaction [Line Items]
Revenue from related parties	$ 13.4	$ 12.6	$ 16.5
Cost of sales from related party	$ 84.4	$ 70.6	$ 81.7
Louisiana Timber Procurement Company LLC [Member] | Unconsolidated variable interest entity [Member]
Related Party Transaction [Line Items]
Variable interest entity, ownership percentage	50.00%
Louisiana Timber Procurement Company LLC [Member] | Packaging Corporation of America (PCA) [Member] | Variable interest entity, primary beneficiary [Member]
Related Party Transaction [Line Items]
Variable interest entity, ownership percentage	50.00%

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- Definition

Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly).

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