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For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 false0Discount rate (as a percent)8false 4pfg_FairValueInputsTerminalCapitalizationRatepfg_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3truetruefalse0.0750.075falsefalsefalse4truetruefalse0.0630.063falsefalsefalsenum:percentItemTypepureRepresents the rate used to estimate the resale value of a property at the end of the holding period, used as an input to measure fair value.No definition available.false0Terminal capitalization rate (as a percent)9false 4pfg_FairValueInputsAverageMarketRentGrowthRatepfg_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3truetruefalse0.0100.010falsefalsefalse4truetruefalse0.0300.030falsefalsefalsenum:percentItemTypepureExpected trend in market rental rates over the period of projection, expressed as an annual percentage increase, used as an input to measure fair value.No definition available.false0Average market rent growth rate (as a percent)10false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse7false truefalseD2013Q2YTD_MortgageLoansMember_FairValueInputsLevel3Member_FairValueMeasurementsNonrecurringMember_MaximumMemberhttp://www.sec.gov/CIK0001126328duration2013-01-01T00:00:002013-06-30T00:00:00falsefalseNonrecurring Fair Value Measurementsus-gaap_FairValueByMeasurementFrequencyAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueMeasurementsNonrecurringMemberus-gaap_FairValueByMeasurementFrequencyAxisexplicitMemberfalsefalseFair value hierarchy Level 3us-gaap_FairValueByFairValueHierarchyLevelAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel3Memberus-gaap_FairValueByFairValueHierarchyLevelAxisexplicitMemberfalsefalseMortgage loanspfg_NonrecurringFairValueMeasurementAssetsLiabilitiesAxisxbrldihttp://xbrl.org/2006/xbrldipfg_MortgageLoansMemberpfg_NonrecurringFairValueMeasurementAssetsLiabilitiesAxisexplicitMemberfalsefalseMaximumus-gaap_RangeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_MaximumMemberus-gaap_RangeAxisexplicitMemberPureStandardhttp://www.xbrl.org/2003/instancepurexbrli0nanafalse0Mortgage loans | Maximum11true 3pfg_FairValueAssetsLiabilitiesMeasuredOnNonrecurringBasisFinancialStatementCaptionsLineItemspfg_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Assets and liabilities measured at fair value on a nonrecurring basis12false 4us-gaap_FairValueInputsDiscountRateus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3truetruefalse0.2000.200falsefalsefalse4truetruefalse0.2000.200falsefalsefalsenum:percentItemTypepureInterest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. 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