Name:	ck0000081061_InvestmentIncomeBeforeFairValueAdjustment
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Data Type:	xbrli:monetaryItemType
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This item represents investment income derived from investments in debt and equity securities consisting of interest income earned from investments in debt securities and on cash and cash equivalents, dividend income from investments in equity securities, and income or expense derived from the amortization of investment related discounts or premiums, respectively, net of related investment expenses. This item also includes realized gains (losses) on the sale of debt and equity securities, unrealized gains (losses) on equity securities held at the end of the period and gains (losses) on the sale of equity securities recognized in a prior period through the fair value adjustment.

No definition available.

Name:	ck0000081061_TotalInvestmentIncome
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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

Amount of realized gain (loss) from sale of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=84241550&loc=SL75117546-209714

Name:	us-gaap_EquitySecuritiesFvNiRealizedGainLoss
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Amount of unrealized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

Name:	us-gaap_EquitySecuritiesFvNiUnrealizedGainLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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The net amount of nonoperating interest income (expense).

No definition available.

Name:	us-gaap_InterestIncomeExpenseNonoperatingNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

Amount of dividend income on nonoperating securities.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.7(a))
-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227

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- References

No definition available.

Name:	us-gaap_InvestmentIncomeNetAbstract
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Amount of realized gain (loss) on investment in marketable security, including other-than-temporary impairment (OTTI).

No definition available.