Transactions With Related Parties (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
Sep. 30, 2016 |
Sep. 30, 2015 |
Sep. 30, 2016 |
Sep. 30, 2015 |
Dec. 31, 2015 |
|
| Related Party Transaction [Line Items] | |||||
| Carrying amount of LTP's assets | $ 5.1 | $ 5.1 | $ 4.5 | ||
| Carrying amount of LTP's liabilities | 5.1 | $ 5.1 | $ 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 | 15.5 | $ 25.2 | $ 54.8 | $ 70.3 | |
| Fiber costs from related parties | $ 3.9 | $ 5.0 | $ 13.2 | $ 16.3 | |
| PCA | |||||
| Related Party Transaction [Line Items] | |||||
| Variable interest entity, ownership percentage | 50.00% | ||||