XML 121 R74.htm IDEA: XBRL DOCUMENT v2.4.0.6

Additional Information on Variable Rate Debt (Detail)	Dec. 31, 2012	Dec. 31, 2011
Receivables Credit Facility
Debt Instrument [Line Items]
Reference Interest Rate	0.21%	0.30%
Applicable Margin	0.85%	0.85%
Senior Credit Facility
Debt Instrument [Line Items]
Reference Interest Rate	0.21%	0.58%
Applicable Margin	1.50%	1.50%

X

- Definition

Represents the applicable margin for the debt instrument at the end of the period.

+ References

No definition available.

+ Details

Name:	pkg_LongTermDebtApplicableMargin
Namespace Prefix:	pkg_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Represents the reference interest rate for the debt instrument at the end of the period.

+ References

No definition available.

+ Details

Name:	pkg_ReferenceInterestRate
Namespace Prefix:	pkg_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration