1.0.0.3 false Consolidated Statements of Cash Flows (USD $) In Millions false 1 $ false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 USDPerShare Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 false 2 $ false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 USDPerShare Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 false 3 $ false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 USDPerShare Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 false 4 $ false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 3 Operating activities 1 us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false 4 false false 0 0 false false No definition available. false 4 Net income 2 us-gaap_ProfitLoss us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 true true 645700000 645.7 false false 2 true true 465800000 465.8 false false 3 true true 884500000 884.5 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 5 Adjustments to reconcile net income to net cash provided by operating activities: 2 us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false 4 false false 0 0 false false No definition available. false 6 Income from discontinued operations, net of related income taxes 3 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false true -20200000 -20.2 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 7 Amortization of deferred policy acquisition costs 3 us-gaap_DeferredPolicyAcquisitionCostAmortizationExpense us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 92200000 92.2 false false 2 false true 373700000 373.7 false false 3 false true 357300000 357.3 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 8 Additions to deferred policy acquisition costs 3 us-gaap_DeferredPolicyAcquisitionCostsAdditions us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -482400000 -482.4 false false 2 false true -680300000 -680.3 false false 3 false true -606100000 -606.1 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 9 Accrued investment income 3 us-gaap_IncreaseDecreaseInAccruedInvestmentIncomeReceivable us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 58800000 58.8 false false 2 false true 23400000 23.4 false false 3 false true -52100000 -52.1 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 10 Net cash flows for trading securities 3 us-gaap_ProceedsFromPaymentsForTradingSecurities us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -127400000 -127.4 false false 2 false true -348000000 -348.0 false false 3 false true -258200000 -258.2 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 11 Premiums due and other receivables 3 us-gaap_IncreaseDecreaseInReceivables us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -126900000 -126.9 false false 2 false true -39200000 -39.2 false false 3 false true 191800000 191.8 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 12 Contractholder and policyholder liabilities and dividends 3 us-gaap_IncreaseDecreaseInInsuranceLiabilities us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 1530900000 1530.9 false false 2 false true 2394200000 2394.2 false false 3 false true 2276700000 2276.7 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 13 Current and deferred income taxes (benefits) 3 pfg_IncreaseDecreaseInAccruedAndDeferredIncomeTaxes pfg false debit duration monetary The net change during the reporting period of current accrued and deferred income taxes payable. Accrued income taxes... false false false false false false false false false 1 false true 65700000 65.7 false false 2 false true -219700000 -219.7 false false 3 false true -70300000 -70.3 false false 4 false false 0 0 false false The net change during the reporting period of current accrued and deferred income taxes payable. Accrued income taxes payable are defined as the carrying amount as of the balance sheet date of the unpaid sum of the known and estimated amounts payable to satisfy all currently due domestic and foreign income tax obligations. In theory, the sum represents amounts due to tax jurisdictions based on tax returns as if they were ready and available for filing on and as of the balance sheet date, plus penalties pertaining to amounts of tax uncertainties. Deferred income taxes payable represent the temporary differences that result from income (loss) that is recognized for accounting purposes but not for tax purposes and vice versa. No authoritative reference available. false 14 Net realized capital losses 3 us-gaap_GainLossOnInvestments us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 398300000 398.3 false false 2 false true 694100000 694.1 false false 3 false true 328800000 328.8 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 15 Depreciation and amortization expense 3 us-gaap_DepreciationAmortizationAndAccretionNet us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 138500000 138.5 false false 2 false true 145000000 145.0 false false 3 false true 130200000 130.2 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 16 Mortgage loans held for sale, acquired or originated 3 us-gaap_PaymentsForOriginationAndPurchasesOfLoansHeldForSale us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -61200000 -61.2 false false 2 false true -92000000 -92.0 false false 3 false true -83800000 -83.8 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 17 Mortgage loans held for sale, sold or repaid, net of gain 3 us-gaap_ProceedsFromSaleAndCollectionOfLoansHeldforsale us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 75400000 75.4 false false 2 false true 73700000 73.7 false false 3 false true 166800000 166.8 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 18 Real estate acquired through operating activities 3 us-gaap_PaymentsToAcquireHeldForSaleRealEstate us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -19800000 -19.8 false false 2 false true -77500000 -77.5 false false 3 false true -48200000 -48.2 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 19 Real estate sold through operating activities 3 us-gaap_ProceedsFromSaleOfWhollyOwnedRealEstateAndRealEstateAcquiredInSettlementOfLoans us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 5200000 5.2 false false 2 false true 24500000 24.5 false false 3 false true 43700000 43.7 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 20 Stock-based compensation 3 us-gaap_ShareBasedCompensation us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 37200000 37.2 false false 2 false true 31500000 31.5 false false 3 false true 72800000 72.8 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 21 Other 3 us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesOther us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 12800000 12.8 false false 2 false true -544400000 -544.4 false false 3 false true -353700000 -353.7 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 22 Net adjustments 3 us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 1597300000 1597.3 false false 2 false true 1759000000 1759.0 false false 3 false true 2075500000 2075.5 false false 4 false false 0 0 false false No definition available. No authoritative reference available. true 23 Net cash provided by operating activities 2 us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true 2243000000 2243.0 false false 2 false true 2224800000 2224.8 false false 3 false true 2960000000 2960.0 false false 4 false false 0 0 false false No definition available. No authoritative reference available. true 24 Investing activities 1 us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false 4 false false 0 0 false false No definition available. false 25 Available-for-sale securities: Purchases 2 us-gaap_PaymentsToAcquireAvailableForSaleSecurities us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -7933300000 -7933.3 false false 2 false true -6605800000 -6605.8 false false 3 false true -10520300000 -10520.3 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 26 Available-for-sale securities: Sales 2 us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 3573600000 3573.6 false false 2 false true 1343500000 1343.5 false false 3 false true 3039600000 3039.6 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 27 Available-for-sale securities: Maturities 2 us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 4434300000 4434.3 false false 2 false true 3207900000 3207.9 false false 3 false true 4461600000 4461.6 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 28 Mortgage loans acquired or originated 2 us-gaap_PaymentsToAcquireMortgageNotesReceivable us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -586500000 -586.5 false false 2 false true -3484900000 -3484.9 false false 3 false true -3108000000 -3108.0 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 29 Mortgage loans sold or repaid 2 us-gaap_ProceedsFromSaleAndCollectionOfMortgageNotesReceivable us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 1704400000 1704.4 false false 2 false true 2902000000 2902.0 false false 3 false true 2112800000 2112.8 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 30 Real estate acquired 2 us-gaap_PaymentsToAcquireRealEstateHeldForInvestment us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -62200000 -62.2 false false 2 false true -33300000 -33.3 false false 3 false true -115200000 -115.2 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 31 Real estate sold 2 us-gaap_ProceedsFromSaleOfRealEstateHeldforinvestment us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 30300000 30.3 false false 2 false true 70600000 70.6 false false 3 false true 53000000 53.0 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 32 Net purchases of property and equipment 2 pfg_PaymentsToAcquirePropertyPlantAndEquipmentNet pfg false credit duration monetary The net cash inflow/outflow associated with the acquisition, sales and disposals of property, plant and equipment, and other... false false false false false false false false false 1 false true -26200000 -26.2 false false 2 false true -105000000 -105.0 false false 3 false true -98400000 -98.4 false false 4 false false 0 0 false false The net cash inflow/outflow associated with the acquisition, sales and disposals of property, plant and equipment, and other productive assets, including intangible assets for software. No authoritative reference available. false 33 Purchases of interest in subsidiaries, net of cash acquired 2 us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -45700000 -45.7 false false 2 false true -20300000 -20.3 false false 3 false true -76100000 -76.1 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 34 Net change in other investments 2 us-gaap_PaymentsForProceedsFromOtherInvestingActivities us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -61900000 -61.9 false false 2 false true -191900000 -191.9 false false 3 false true -248200000 -248.2 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 35 Net cash provided by (used in) investing activities 2 us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 1026800000 1026.8 false false 2 false true -2917200000 -2917.2 false false 3 false true -4499200000 -4499.2 false false 4 false false 0 0 false false No definition available. No authoritative reference available. true 36 Financing activities 1 us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false 4 false false 0 0 false false No definition available. false 37 Issuance of common stock 2 us-gaap_ProceedsFromIssuanceOfCommonStock us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 1123000000 1123.0 false false 2 false true 36400000 36.4 false false 3 false true 73600000 73.6 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 38 Acquisition of treasury stock 2 us-gaap_PaymentsForRepurchaseOfCommonStock us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -4100000 -4.1 false false 2 false true -6400000 -6.4 false false 3 false true -756300000 -756.3 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 39 Proceeds from financing element derivatives 2 pfg_ProceedsFromFinancingElementDerivatives pfg false debit duration monetary The cash inflow from financing element derivatives. false false false false false false false false false 1 false true 122000000 122.0 false false 2 false true 142200000 142.2 false false 3 false true 128700000 128.7 false false 4 false false 0 0 false false The cash inflow from financing element derivatives. No authoritative reference available. false 40 Payments for financing element derivatives 2 pfg_PaymentsForFinancingElementDerivatives pfg false credit duration monetary The cash outflow from financing element derivatives. false false false false false false false false false 1 false true -67400000 -67.4 false false 2 false true -114600000 -114.6 false false 3 false true -137200000 -137.2 false false 4 false false 0 0 false false The cash outflow from financing element derivatives. No authoritative reference available. false 41 Excess tax benefits from share-based payment arrangements 2 us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 200000 0.2 false false 2 false true 3100000 3.1 false false 3 false true 10200000 10.2 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 42 Dividends to common stockholders 2 us-gaap_PaymentsOfDividendsCommonStock us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -159500000 -159.5 false false 2 false true -116700000 -116.7 false false 3 false true -235600000 -235.6 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 43 Dividends to preferred stockholders 2 us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -33000000 -33.0 false false 2 false true -33000000 -33.0 false false 3 false true -41200000 -41.2 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 44 Issuance of long-term debt 2 us-gaap_ProceedsFromIssuanceOfLongTermDebt us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 745100000 745.1 false false 2 false true 7900000 7.9 false false 3 false true 200000 0.2 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 45 Principal repayments of long-term debt 2 us-gaap_RepaymentsOfLongTermDebt us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -468200000 -468.2 false false 2 false true -83300000 -83.3 false false 3 false true -115000000 -115.0 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 46 Net proceeds (repayments) of short-term borrowings 2 us-gaap_ProceedsFromRepaymentsOfShortTermDebt us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -405100000 -405.1 false false 2 false true 217400000 217.4 false false 3 false true 203900000 203.9 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 47 Investment contract deposits 2 us-gaap_AdditionsToContractHoldersFunds us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 4224100000 4224.1 false false 2 false true 11349000000 11349.0 false false 3 false true 9958900000 9958.9 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 48 Investment contract withdrawals 2 us-gaap_WithdrawalFromContractHoldersFunds us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -8752700000 -8752.7 false false 2 false true -9813700000 -9813.7 false false 3 false true -8209900000 -8209.9 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 49 Net increase in banking operation deposits 2 us-gaap_IncreaseDecreaseInDeposits us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 43900000 43.9 false false 2 false true 373100000 373.1 false false 3 false true 417100000 417.1 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 50 Other 2 us-gaap_ProceedsFromPaymentsForOtherFinancingActivities us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -5700000 -5.7 false false 2 false true -5400000 -5.4 false false 3 false true -5300000 -5.3 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 51 Net cash provided by (used in) financing activities 2 us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -3637400000 -3637.4 false false 2 false true 1956000000 1956.0 false false 3 false true 1292100000 1292.1 false false 4 false false 0 0 false false No definition available. No authoritative reference available. true 52 Discontinued operations 1 us-gaap_NetCashProvidedByUsedInDiscontinuedOperationsAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false 4 false false 0 0 false false No definition available. false 53 Net cash provided by operating activities 2 us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false true 2500000 2.5 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 54 Net cash used in investing activities 2 us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false true -1300000 -1.3 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 55 Net cash used in financing activities 2 us-gaap_CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false true -500000 -0.5 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 56 Net cash provided by discontinued operations 2 us-gaap_NetCashProvidedByUsedInDiscontinuedOperations us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false true 700000 0.7 false false 4 false false 0 0 false false No definition available. No authoritative reference available. true 57 Net increase (decrease) in cash and cash equivalents 1 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true -367600000 -367.6 false false 2 false true 1263600000 1263.6 false false 3 false true -246400000 -246.4 false false 4 false false 0 0 false false No definition available. No authoritative reference available. true 58 Cash and cash equivalents at beginning of year 1 pfg_CashAndCashEquivalentsTotalOfContinuingAndDiscontinuedOperations pfg false debit instant monetary Cash and cash equivalents of both continuing operations and discontinued operations. false false false false false false true false false 1 false true 2608000000 2608.0 false false 2 false true 1344400000 1344.4 false false 3 false true 1590800000 1590.8 false false 4 false false 0 0 false false Cash and cash equivalents of both continuing operations and discontinued operations. No authoritative reference available. false 59 Cash and cash equivalents at end of year 1 pfg_CashAndCashEquivalentsTotalOfContinuingAndDiscontinuedOperations pfg false debit instant monetary Cash and cash equivalents of both continuing operations and discontinued operations. false false false false false false false true false 1 false true 2240400000 2240.4 false false 2 false true 2608000000 2608.0 false false 3 false true 1344400000 1344.4 false false 4 false true 1590800000 1590.8 false false Cash and cash equivalents of both continuing operations and discontinued operations. No authoritative reference available. false 60 Cash and cash equivalents of discontinued operations included above 1 pfg_CashAndCashEquivalentsOfDiscontinuedOperationsAbstract pfg false na duration string Cash and cash equivalents of discontinued operations. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false 4 false false 0 0 false false Cash and cash equivalents of discontinued operations. false 61 At beginning of year 2 pfg_CashAndCashEquivalentsOfDiscontinuedOperations pfg false debit instant monetary Cash and cash equivalents of discontinued operations. false false false false false false true false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false true -700000 -0.7 false false 4 false false 0 0 false false Cash and cash equivalents of discontinued operations. No authoritative reference available. false 62 At end of year 2 pfg_CashAndCashEquivalentsOfDiscontinuedOperations pfg false debit instant monetary Cash and cash equivalents of discontinued operations. false false false false false false false true false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false 4 false true -700000 -0.7 false false Cash and cash equivalents of discontinued operations. No authoritative reference available. false 63 Supplemental Information: 1 us-gaap_SupplementalCashFlowInformationAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false 4 false false 0 0 false false No definition available. false 64 Cash paid for interest 2 us-gaap_InterestPaid us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 129900000 129.9 false false 2 false true 111300000 111.3 false false 3 false true 115100000 115.1 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 65 Cash paid for income taxes 2 us-gaap_IncomeTaxesPaidNet us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 true true 75400000 75.4 false false 2 true true 206100000 206.1 false false 3 true true 245900000 245.9 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false false 4 63 false HundredThousands UnKnown UnKnown false true