Debt - Additional Information (Detail) - USD ($)			1 Months Ended	12 Months Ended
	Sep. 05, 2014	Oct. 18, 2013	Oct. 31, 2013	Dec. 31, 2015	Dec. 31, 2014		Dec. 31, 2013		Oct. 22, 2013	Jun. 26, 2012	Mar. 25, 2008
Debt Instrument [Line Items]
Long-term debt				$ 2,309,200,000	$ 2,355,400,000
Financing costs paid				0	(3,400,000)		$ (19,400,000)
Book value of fixed rate debt				1,647,200,000
Book value of variable rate debt				662,000,000
Long-term debt, fair value				1,698,200,000
Repayment of debt			$ 953,600,000
Annual Principal Maturities for Debt [Abstract]
2016				6,500,000
2017				6,500,000
2018				181,500,000
2019				6,500,000
2020				611,000,000
2020 and thereafter				1,500,000,000
Interest payments				85,500,000	77,000,000
Interest payments and redemption premium payments paid for debt obligations							105,700,000
Redemption Premium							54,800,000
Amortization of net (loss) gain on treasury lock				(5,700,000)	(5,700,000)		(5,700,000)
Amortization of financing costs				1,800,000	3,300,000		10,300,000
Write-off of deferred financing costs				85,500,000	88,400,000	[1]	58,300,000	[2],[3]
Boise Inc.
Debt Instrument [Line Items]
Repayment of debt			$ 829,800,000
Annual Principal Maturities for Debt [Abstract]
Amortization of financing costs							8,200,000
Line of Credit
Debt Instrument [Line Items]
Credit facility borrowing capacity		$ 350,000,000.0
Unused borrowing capacity				326,500,000
Long-term debt				$ 0	$ 0
Stated interest rate				0.00%	0.00%
Credit facility, expiration date				Oct. 18, 2018
Five-Year and Seven-Year Term Loans, due October 2018 and 2020, respectively | Unsecured Debt
Debt Instrument [Line Items]
Debt, face amount		1,650,000,000
Repayment of debt				$ 591,500,000
Five-Year Term Loan, due October 2018 | Unsecured Debt
Debt Instrument [Line Items]
Debt, face amount		$ 650,000,000.0
Applicable margin		1.375%		1.375%	1.375%
Long-term debt				$ 25,000,000	$ 65,000,000
Repayments of Debt				$ 40,000,000
Seven-Year Term Loan, due October 2020 | Unsecured Debt
Debt Instrument [Line Items]
Debt, face amount		$ 650,000,000.0
Applicable margin		1.625%		1.625%	1.625%
Long-term debt				$ 637,000,000	$ 643,500,000
Repayments of Debt				6,500,000
6.50% Senior Notes due March 2018 | Senior Notes
Debt Instrument [Line Items]
Debt, face amount											$ 150,000,000.0
Long-term debt				$ 150,000,000	$ 150,000,000
Stated interest rate				6.50%	6.50%						6.50%
3.90% Senior Notes, due June 2022 | Senior Notes
Debt Instrument [Line Items]
Debt, face amount										$ 400,000,000.0
Long-term debt				$ 399,700,000	$ 399,700,000
Stated interest rate				3.90%	3.90%					3.90%
4.50% Senior Notes, due November 2023 | Senior Notes
Debt Instrument [Line Items]
Debt, face amount									$ 700,000,000.0
Long-term debt				$ 698,500,000	$ 698,300,000
Stated interest rate				4.50%	4.50%				4.50%
3.65% Senior Notes, due September 2024 | Senior Notes
Debt Instrument [Line Items]
Debt, face amount	$ 400,000,000.0
Long-term debt				$ 399,000,000	$ 398,900,000
Stated interest rate	3.65%			3.65%	3.65%
Financing costs paid	$ (3,400,000)
Annual Principal Maturities for Debt [Abstract]
Amortization of financing costs					$ 1,500,000
Letter of Credit | Line of Credit
Debt Instrument [Line Items]
Outstanding letters of credit				$ 23,500,000
Receivables Credit Facility
Debt Instrument [Line Items]
Repayment of debt							$ 109,000,000
Write-Off of Deferred Financing Costs
Annual Principal Maturities for Debt [Abstract]
Write-off of deferred financing costs					$ 1,500,000
London Interbank Offered Rate (LIBOR) | Five-Year Term Loan, due October 2018 | Unsecured Debt
Debt Instrument [Line Items]
Stated interest rate				1.80%	1.54%
Annual Principal Maturities for Debt [Abstract]
Reference Interest Rate				0.42%	0.17%
London Interbank Offered Rate (LIBOR) | Seven-Year Term Loan, due October 2020 | Unsecured Debt
Debt Instrument [Line Items]
Stated interest rate				2.05%	1.79%
Annual Principal Maturities for Debt [Abstract]
Reference Interest Rate				0.42%	0.17%

[1] Includes $1.5 million of expense related to the write-off of deferred financing costs in connection with the debt refinancing discussed in Note 10, Debt.

[2] Includes $10.5 million of expenses for financing the Boise acquisition and $1.1 million of expense for the write-off of deferred financing costs.

[3] On October 25, 2013, we acquired Boise Inc. (Boise). Our financial results include Boise subsequent to acquisition.