2.2.0.25falsefalse136 - Disclosure - Discontinued Operations - Additional Information (Detail)truefalsefalse1falsefalseUSDfalsefalse10/1/2009 - 10/31/2009
USD ($)
$eol_PE1341----1110-Q0005_STD_31_20091031_0http://www.sec.gov/CIK0000080424duration2009-10-01T00:00:002009-10-31T00:00:00iso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$2falsefalseUSDfalsefalse10/1/2009 - 12/31/2009
USD ($)
$eol_PE1341----1110-Q0005_STD_92_20091231_0http://www.sec.gov/CIK0000080424duration2009-10-01T00:00:002009-12-31T00:00:00iso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$5false0pg_ProceedsFromSaleOfDiscontinuedOperationspgfalsedebitdurationProceeds from sales of discontinued operations.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse28000000002800000000falsetruefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryProceeds from sales of discontinued operations.No authoritative reference available.falsefalse6false0us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTaxus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2truefalsefalse14640000001464000000falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryGain (loss) after tax expense (benefit), not previously recognized and resulting from the sale of a business component, which is recognized at the date of sale. A gain (loss) reflects the amount by which the consideration received exceeds (is exceeded by) the net carrying amount (reflecting previous provisions for loss on disposal, if any) of the disposal group.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 144
-Paragraph 43
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 144
-Paragraph 47
-Subparagraph b
falsefalse22Discontinued Operations - Additional Information (Detail) (USD $)NoRoundingUnKnownUnKnownUnKnownfalsetrue
