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Transactions With Related Parties (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Related Party Transaction [Line Items]
Carrying amount of LTP's assets	$ 4.5		$ 4.5
Carrying amount of LTP's liabilities	$ 4.5		$ 4.5
Boise Cascade Co-Owner of LTP
Related Party Transaction [Line Items]
Variable interest entity, ownership percentage	50.00%
Boise Cascade Co-Owner of LTP \| Fiber
Related Party Transaction [Line Items]
Revenue from related parties	$ 22.3	$ 21.9
Fiber costs from related parties	$ 4.7	$ 6.3
Packaging Corporation of America [Member]
Related Party Transaction [Line Items]
Variable interest entity, ownership percentage	50.00%