Other Expense, Net (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Other Income and Expenses [Abstract]
Integration-related and other costs	$ 3.0	[1]	$ 4.1	[1]
DeRidder restructuring	1.2	[2]	1.1	[2]
Refundable state tax credit	(3.6)	[3]	0
Class action lawsuit settlement	0		17.6	[4]
Asset disposals and write-offs	1.0		1.3
Other	1.0		(0.1)
Total	$ 2.6		$ 24.0

[1] The three months ended March 31, 2015 and 2014, includes Boise acquisition integration-related and other costs, which primarily relate to professional fees, severance, retention, relocation, travel, and other integration-related costs.

[2] The three months ended March 31, 2015 and 2014, includes restructuring charges at our mill in DeRidder, Louisiana.

[3] The three months ended March 31, 2015, includes a $3.6 million tax credit from the State of Louisiana related to our recent capital investment and the jobs retained at the DeRidder, Louisiana, mill.

[4] The three months ended March 31, 2014, includes $17.6 million of costs for the settlement of the Kleen Products LLC v Packaging Corp. of America et al class action lawsuit.