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Commitments, Guarantees, Indemnifications, and Legal Proceedings Schedule of Purchase Commitments (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2013
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Long-term Purchase Commitment [Line Items] |
2014 | $ 120,971
2015 | 54,757
2016 | 14,840
2017 | 3,017
2018 | 2,545
Thereafter | 11,536
Total | $ 207,666

X
- Definition The minimum amount the entity agreed to spend under the long-term purchase commitment after the fifth year after the balance sheet date. + References No definition available. + Details
Name: | pkg_LongTermPurchaseCommitmentAmountDueThereafter
Namespace Prefix: | pkg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The minimum amount the entity agreed to spend under the long-term purchase commitment in the fifth year after the balance sheet date. + References No definition available. + Details
Name: | pkg_LongTermPurchaseCommitmentAmountDueWithinFiveYears
Namespace Prefix: | pkg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The minimum amount the entity agreed to spend under the long-term purchase commitment in the fourth year after the balance sheet date. + References No definition available. + Details
Name: | pkg_LongTermPurchaseCommitmentAmountDueWithinFourYears
Namespace Prefix: | pkg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The minimum amount the entity agreed to spend under the long-term purchase commitment in the first year after the balance sheet date. + References No definition available. + Details
Name: | pkg_LongTermPurchaseCommitmentAmountDueWithinOneYear
Namespace Prefix: | pkg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The minimum amount the entity agreed to spend under the long-term purchase commitment in the third year after the balance sheet date. + References No definition available. + Details
Name: | pkg_LongTermPurchaseCommitmentAmountDueWithinThreeYears
Namespace Prefix: | pkg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The minimum amount the entity agreed to spend under the long-term purchase commitment in the second year after the balance sheet date. + References No definition available. + Details
Name: | pkg_LongTermPurchaseCommitmentAmountDueWithinTwoYears
Namespace Prefix: | pkg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The total of contractually required payments on long-term purchase commitments. + References No definition available. + Details
Name: | pkg_LongTermPurchaseCommitmentFutureMinimumPaymentsDue
Namespace Prefix: | pkg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_LongTermPurchaseCommitmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration