Commitments And Contingent Liabilities (Narrative) (Details) (USD $)	3 Months Ended	12 Months Ended			1 Months Ended	12 Months Ended			12 Months Ended
	Jun. 30, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Sep. 30, 2010 Kleen Products Llc Versus Packaging Corp Of America [Member]	Dec. 31, 2013 Kleen Products Llc Versus Packaging Corp Of America [Member]	Dec. 31, 2013 Cass Lake Minnesota [Member]	Jun. 30, 2011 Cass Lake Minnesota [Member]	Dec. 31, 2013 Kalamazoo River Superfund Site [Member]	Dec. 31, 2013 Harris County San Jacinto River Superfund Site [Member]	Dec. 31, 2013 Bogalusa Louisiana [Member]	Dec. 31, 2011 Bogalusa Louisiana [Member] Louisiana	Dec. 31, 2013 Bogalusa Louisiana [Member] Louisiana and Mississippi [Member]	Dec. 31, 2012 Bogalusa Louisiana [Member] Louisiana and Mississippi [Member]	Dec. 31, 2013 Minimum [Member] Harris County San Jacinto River Superfund Site [Member]	Dec. 31, 2013 Maximum [Member] Harris County San Jacinto River Superfund Site [Member]	Dec. 31, 2013 Biochemical oxygen demand (BOD) limits exceeded [Member] Bogalusa Louisiana [Member]	Dec. 31, 2013 Clean water act violation [Member] Bogalusa Louisiana [Member]
Commitments and Contingent Liabilities [Line Items]
Rent expense		$ 215,000,000	$ 231,000,000	$ 205,000,000
Accrual for environmental loss contingencies		94,000,000					51,000,000	46,000,000
Environmental remediation on closed or formerly-owned facilities, recorded as liabilities in balance sheet		42,000,000
Loss contingency, damages sought, value									79,000,000						50	25,000
Loss contingency, number of plaintiffs										500
Environmental remediation expense	6,000,000										3,300,000						3,000,000
Loss contingency accrual, provision																		125,000
Loss contingency, new claims filed, number						4						15	28	13
Loss contingency, number of defendants					8
Income tax examination, range of possible losses		$ 29,000,000