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Valdosta Mill Fire Insurance Recovery (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Jun. 30, 2011	Sep. 30, 2011 T
Valdosta Mill Fire Insurance Recovery
Sale volume losses, in tons			11,000
Insurance deductible			$ 3.0
Insurance claim, net of deductible	1.5	6.5	8.0
Insurance proceeds included in net cash provided by operating activities			5.5
Insurance proceeds included in net cash used for investing activities			$ 2.5

X

- Definition

Insurance [Abstract]

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X

- Definition

Represents the insurance deductible.

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Namespace Prefix:	pkg
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Sale volume losses

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X

- Definition

The cash inflow from the amounts received by the insured under the terms of an insurance contract settlement. This element pertains only to insurance proceeds related to investments, for example fixed assets. It excludes insurance settlements classified as operating cash flows.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 22

-Subparagraph c

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- Definition

The cash inflow from the amounts received by the insured under the terms of an insurance contract settlement. This element pertains only to insurance proceeds related to operating activities. It excludes insurance settlements classified as investing cash flows, for example, insurance settlements related to fixed assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 22

-Subparagraph c

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- Definition

The gross income statement effect of insurance proceeds for each material event or transaction that is abnormal or significantly different from typical activities or is not reasonably expect to recur in the foreseeable future, but not both, and therefore does not meet both criteria for classification as an extraordinary item.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 30

-Paragraph 26



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Emerging Issues Task Force (EITF)

-Number 01-10

-Paragraph 7



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name FASB Interpretation (FIN)

-Number 30

-Paragraph 2, 3, 4, 5

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