2.2.0.25truefalse0615 - Disclosure - Other Comprehensive Income (Loss) (Details)truefalseIn Millionsfalse1falsefalseJPYfalsefalse1/1/2010 - 12/31/2010 JPY (¥) JPY (¥) / shares ¥Jan-01-2010_Dec-31-2010http://www.sec.gov/CIK0000016988duration2010-01-01T00:00:002010-12-31T00:00:00JPYStandardhttp://www.xbrl.org/2003/iso4217JPYiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0JPYEPSDividehttp://www.xbrl.org/2003/iso4217JPYiso4217http://www.xbrl.org/2003/instancesharesxbrli0JPYJPY¥2falsefalseJPYfalsefalse1/1/2009 - 12/31/2009 JPY (¥) JPY (¥) / shares ¥TwelveMonthsEnded_31Dec2009http://www.sec.gov/CIK0000016988duration2009-01-01T00:00:002009-12-31T00:00:00JPYStandardhttp://www.xbrl.org/2003/iso4217JPYiso42170JPYEPSDividehttp://www.xbrl.org/2003/iso4217JPYiso4217http://www.xbrl.org/2003/instancesharesxbrli0PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0JPYJPY¥3falsefalseJPYfalsefalse1/1/2008 - 12/31/2008 JPY (¥) JPY (¥) / shares ¥TwelveMonthsEnded_31Dec2008http://www.sec.gov/CIK0000016988duration2008-01-01T00:00:002008-12-31T00:00:00PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0JPYStandardhttp://www.xbrl.org/2003/iso4217JPYiso42170JPYEPSDividehttp://www.xbrl.org/2003/iso4217JPYiso4217http://www.xbrl.org/2003/instancesharesxbrli0SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0JPYJPY¥2true0us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTaxAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseChange in accumulated other comprehensive income(loss)3false0us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTaxus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsetruefalsefalseperiodstartlabel1truefalsefalse-202628000000-202628falsetruefalsefalsefalse2truefalsefalse-235968000000-235968falsetruefalsefalsefalse3truefalsefalse2279600000022796falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAccumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains (losses).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 52 -Paragraph 12, 13 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 52 -Paragraph 31 -Subparagraph a Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 17, 18, 19, 22, 23, 24, 25, 26 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 45 falsefalseForeign currency translation adjustments, beginning of year4false0us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTaxus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsetruefalseperiodendlabel1truefalsefalse-325612000000-325612falsefalsefalsefalsefalse2truefalsefalse-202628000000-202628falsefalsefalsefalsefalse3truefalsefalse-235968000000-235968falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAccumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains (losses).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 52 -Paragraph 12, 13 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 52 -Paragraph 31 -Subparagraph a Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 17, 18, 19, 22, 23, 24, 25, 26 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 45 falsefalseForeign currency translation adjustments, end of year5false0us-gaap_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTaxus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsetruefalsefalseperiodstartlabel1truefalsefalse32850000003285falsefalsefalsefalsefalse2truefalsefalse11350000001135falsefalsefalsefalsefalse3truefalsefalse62870000006287falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAccumulated appreciation or loss, net of tax, in value of the total of unsold securities at the end of an accounting period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 26 falsefalseNet unrealized gains and losses on securities, beginning of year6false0us-gaap_AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTaxus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsetruefalseperiodendlabel1truefalsefalse30200000003020falsefalsefalsefalsefalse2truefalsefalse32850000003285falsefalsefalsefalsefalse3truefalsefalse11350000001135falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAccumulated appreciation or loss, net of tax, in value of the total of unsold securities at the end of an accounting period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 26 falsefalseNet unrealized gains and losses on securities, end of year7false0caj_AccumulatedOtherComprehesiveIncomeDerivativeInstrumentNetOfTaxcajfalsecreditinstantAccumulated Other Comprehesive Income Derivative Instrument Net of Tax.falsefalsefalsefalsefalsefalsefalsetruefalsefalseperiodstartlabel1truefalsefalse7100000071falsefalsefalsefalsefalse2truefalsefalse14930000001493falsefalsefalsefalsefalse3truefalsefalse-849000000-849falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAccumulated Other Comprehesive Income Derivative Instrument Net of Tax.No authoritative reference available.falsefalseNet gains and losses on derivative instruments, beginning of year8false0caj_AccumulatedOtherComprehesiveIncomeDerivativeInstrumentAdjustmentForYearcajfalsenadurationAccumulated Other Comprehesive Income Derivative Instrument Adjustment For Year.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse846000000846falsefalsefalsefalsefalse2truefalsefalse-1422000000-1422falsefalsefalsefalsefalse3truefalsefalse23420000002342falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAccumulated Other Comprehesive Income Derivative Instrument Adjustment For Year.No authoritative reference available.falsefalseNet gains and losses on derivative instruments, adjustment for the year9false0caj_AccumulatedOtherComprehesiveIncomeDerivativeInstrumentNetOfTaxcajfalsecreditinstantAccumulated Other Comprehesive Income Derivative Instrument Net of Tax.falsefalsefalsefalsefalsefalsefalsefalsetruefalseperiodendlabel1truefalsefalse917000000917falsefalsefalsefalsefalse2truefalsefalse7100000071falsefalsefalsefalsefalse3truefalsefalse14930000001493falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAccumulated Other Comprehesive Income Derivative Instrument Net of Tax.No authoritative reference available.falsefalseNet gains and losses on derivative instruments, end of year10false0us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTaxus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsetruefalsefalseperiodstartlabel1truefalsefalse-61546000000-61546falsefalsefalsefalsefalse2truefalsefalse-59480000000-59480falsefalsefalsefalsefalse3truefalsefalse64360000006436falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe total of net (gain) loss, prior service cost (credit), and transition assets (obligations), as well as minimum pension liability if still remaining, included in accumulated other comprehensive income associated with a defined benefit pension or other postretirement plan(s) because they have yet to be recognized as components of net periodic benefit cost.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 26 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph i Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 7 -Subparagraph c falsefalsePension liability adjustments, beginning of year11false0caj_AccumulatedOtherComprehesiveIncomePensionLiabilityAdjustmentcajfalsenadurationAccumulated Other Comprehesive Income Pension Liability Adjustment.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse-7238000000-7238falsefalsefalsefalsefalse2truefalsefalse-2066000000-2066falsefalsefalsefalsefalse3truefalsefalse-65916000000-65916falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAccumulated Other Comprehesive Income Pension Liability Adjustment.No authoritative reference available.falsefalsePension liability adjustments for the year12false0us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTaxus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsetruefalseperiodendlabel1truefalsefalse-68784000000-68784falsefalsefalsefalsefalse2truefalsefalse-61546000000-61546falsefalsefalsefalsefalse3truefalsefalse-59480000000-59480falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe total of net (gain) loss, prior service cost (credit), and transition assets (obligations), as well as minimum pension liability if still remaining, included in accumulated other comprehensive income associated with a defined benefit pension or other postretirement plan(s) because they have yet to be recognized as components of net periodic benefit cost.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 26 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph i Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 7 -Subparagraph c falsefalsePension liability adjustments, end of year13false0us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTaxus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsetruefalsefalseperiodstartlabel1truefalsefalse-260818000000-260818falsefalsefalsefalsefalse2truefalsefalse-292820000000-292820falsefalsefalsefalsefalse3truefalsefalse3467000000034670falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAccumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at fiscal year-end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, and unrealized gains and losses on certain investments in debt and equity securities as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 14, 17, 26 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 31 -Article 5 falsefalseBalance at beginning of year14false0caj_AccumulatedOtherComprehesiveIncomeAdjustmentTotalcajfalsenadurationAccumulated Other Comprehesive Income Adjustment Total.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse-129641000000-129641falsefalsefalsefalsefalse2truefalsefalse3200200000032002falsefalsefalsefalsefalse3truefalsefalse-327490000000-327490falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAccumulated Other Comprehesive Income Adjustment Total.No authoritative reference available.falsefalseAdjustments for the year15false0us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTaxus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsetruefalseperiodendlabel1truefalsefalse-390459000000-390459falsefalsefalsefalsefalse2truefalsefalse-260818000000-260818falsefalsefalsefalsefalse3truefalsefalse-292820000000-292820falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAccumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at fiscal year-end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, and unrealized gains and losses on certain investments in debt and equity securities as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 14, 17, 26 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 31 -Article 5 falsefalseBalance at end of year16true0caj_TaxEffectsAllocatedToOtherComprehensiveIncomeLossAndReclassificationAdjustmentsIncludingAmountsAttributableToNoncontrollingInterestsAbstractcajfalsenadurationTax effects allocated to other comprehensive income (loss) and reclassification adjustments, including amounts attributable...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringTax effects allocated to other comprehensive income (loss) and reclassification adjustments, including amounts attributable to noncontrolling interests.falsefalseTax effects allocated to other comprehensive income (loss) and reclassification adjustments, including amounts attributable to noncontrolling interests17false0us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPeriodIncreaseDecreaseus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse-128271000000-128271falsefalsefalsefalsefalse2truefalsefalse3545900000035459falsefalsefalsefalsefalse3truefalsefalse-266568000000-266568falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryPre-tax adjustment that results from the process of translating subsidiary financial statements and foreign equity investments into functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains (losses). Includes gain (loss) on foreign currency forward exchange contracts. Includes foreign currency transactions designated as hedges of net investment in a foreign entity and intercompany foreign currency transactions that are of a long-term nature, when the entities to the transaction are consolidated, combined, or accounted for by the equity method in the reporting enterprise's financial statements. Includes the gain or loss on a derivative instrument or nonderivative financial instrument that may give rise to a foreign currency transaction gain or loss under FAS 52 and that have been designated and have qualified as hedging instruments for hedges of the foreign currency exposure of a net investment in a foreign operation.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 14, 17, 19, 26 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 52 -Paragraph 13, 20, 31 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 45 -Subparagraph c Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 24 -Subparagraph b falsefalseForeign currency translation adjustments, Before-tax amount18false0us-gaap_OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTaxus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse13530000001353falsefalsefalsefalsefalse2truefalsefalse-2089000000-2089falsefalsefalsefalsefalse3truefalsefalse58930000005893falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTax effect of the adjustment that results from the process of translating subsidiary financial statements and foreign equity investments into functional currency of the reporting entity.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 25 falsefalseForeign currency translation adjustments, Tax (expense) or benefit19false0us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecreaseus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse-126918000000-126918falsefalsefalsefalsefalse2truefalsefalse3337000000033370falsefalsefalsefalsefalse3truefalsefalse-260675000000-260675falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAdjustment that results from the process of translating subsidiary financial statements and foreign equity investments into functional currency of the reporting entity, net of tax.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 52 -Paragraph 13, 20, 31 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 24 -Subparagraph b Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 14, 17, 19, 26 falsefalseForeign currency translation adjustments, Net-of-tax amount20true0us-gaap_OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecreaseAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseNet unrealized gains and losses on securities:21false0us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTaxus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse-2179000000-2179falsefalsefalsefalsefalse2truefalsefalse22310000002231falsefalsefalsefalsefalse3truefalsefalse-17485000000-17485falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryGross appreciation or the gross loss in value of the total of unsold available-for-sale securities during the period being reported (except when designated as a fair value hedge).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 24 -Subparagraph b Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 13 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 17 falsefalseAmount arising during the year, Before-tax amount22false0us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTaxus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse671000000671falsefalsefalsefalsefalse2truefalsefalse-1333000000-1333falsefalsefalsefalsefalse3truefalsefalse69920000006992falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTax effect on gross appreciation or the gross loss in value of the total of unsold securities during the period being reported on.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 25 falsefalseAmount arising during the year, Tax (expense) or benefit23false0us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTaxus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse-1508000000-1508falsefalsefalsefalsefalse2truefalsefalse898000000898falsefalsefalsefalsefalse3truefalsefalse-10493000000-10493falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAppreciation or loss in value (before reclassification adjustment) of the total of unsold securities during the period being reported on, net of tax. Reclassification adjustments include: (1) the unrealized holding gain or loss, net of tax, at the date of the transfer for a debt security from the held-to-maturity category transferred into the available-for-sale category. Also includes the unrealized gain or loss at the date of transfer for a debt security from the available-for-sale category transferred into the held-to-maturity category; (2) the unrealized gains or losses realized upon the sale of securities, after tax; and (3) the unrealized gains or losses realized upon the write-down of securities, after tax.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 17, 22 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 13 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 24 -Subparagraph b falsefalseAmount arising during the year, Net-of-tax amount24false0us-gaap_OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeBeforeTaxus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truefalsefalse13200000001320falsefalsefalsefalsefalse2truefalsefalse22050000002205falsefalsefalsefalsefalse3truefalsefalse77520000007752falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryPre tax reclassification adjustment for gains or losses realized upon the sale of securities.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 24 -Subparagraph b Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 18, 19 truefalseReclassification adjustments for gains and losses realized in net income, Before-tax amount25false0us-gaap_OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeTaxus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truefalsefalse4200000042falsefalsefalsefalsefalse2truefalsefalse-886000000-886falsefalsefalsefalsefalse3truefalsefalse-3101000000-3101falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTax effect on the reclassification adjustment for gains or losses realized upon the sale of securities during the period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 25 truefalseReclassification adjustments for gains and losses realized in net income, Tax (expense) or benefit26false0us-gaap_OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTaxus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truefalsefalse13620000001362falsefalsefalsefalsefalse2truefalsefalse13190000001319falsefalsefalsefalsefalse3truefalsefalse46510000004651falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryReclassification adjustment for unrealized gains or losses realized upon the sale of securities, after tax.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 24 -Subparagraph b Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 18, 19 truefalseReclassification adjustments for gains and losses realized in net income, Net-of-tax amount27false0us-gaap_OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentBeforeTaxPeriodIncreaseDecreaseus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse-859000000-859falsefalsefalsefalsefalse2truefalsefalse44360000004436falsefalsefalsefalsefalse3truefalsefalse-9733000000-9733falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryGross appreciation or the gross loss in value of the total of unsold available-for-sale securities (except when designated as a fair value hedge or which had been determined to have had an other than temporary decline in fair value below its amortized cost basis) at the end of an accounting period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 19 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 13 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 16 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 26 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 24 -Subparagraph b Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 14 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 17 falsefalseNet change during the year, Before-tax amount28false0us-gaap_OtherComprehensiveIncomeAvailableForSaleSecuritiesTaxus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse713000000713falsefalsefalsefalsefalse2truefalsefalse-2219000000-2219falsefalsefalsefalsefalse3truefalsefalse38910000003891falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTax effect of the gross appreciation or the gross loss, net of reclassification adjustment, in the change in value of available for sale securities during the period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 25 falsefalseNet change during the year, Tax (expense) or benefit29false0us-gaap_OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecreaseus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse-146000000-146falsefalsefalsefalsefalse2truefalsefalse22170000002217falsefalsefalsefalsefalse3truefalsefalse-5842000000-5842falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryGross appreciation or the gross loss in value of the total unsold securities at the end of an accounting period, after tax.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 14, 17, 19, 22, 26 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 13 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 24 -Subparagraph b falsefalseNet change during the year, Net-of-tax amount30true0us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecreaseAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseNet gains and losses on derivative instruments:31false0us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTaxus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse84090000008409falsefalsefalsefalsefalse2truefalsefalse298000000298falsefalsefalsefalsefalse3truefalsefalse2312100000023121falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryPre tax change in accumulated gains and losses from derivative instrument designated and qualifying as the effective portion of cash flow hedges. A cash flow hedge is a hedge of the exposure to variability in the cash flows of a recognized asset or liability or a forecasted transaction that is attributable to a particular risk. Includes an entity's share of an equity investee's increase (decrease) in deferred hedging gains or losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 17, 20 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 24 -Subparagraph b Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 46 falsefalseAmount arising during the year, Before-tax amount32false0us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTaxus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse-3573000000-3573falsefalsefalsefalsefalse2truefalsefalse-119000000-119falsefalsefalsefalsefalse3truefalsefalse-9248000000-9248falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTax effect on the change in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's increase (decrease) in deferred hedging gains or losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 25 falsefalseAmount arising during the year, Tax (expense) or benefit33false0us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTaxus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse48360000004836falsefalsefalsefalsefalse2truefalsefalse179000000179falsefalsefalsefalsefalse3truefalsefalse1387300000013873falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryChange in accumulated gains and losses from derivative instrument designated and qualifying as the effective portion of cash flow hedges, net of tax effect. The after tax effect change includes an entity's share of an equity investee's increase (decrease) in deferred hedging gains or losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 17, 20 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 121 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 24 -Subparagraph b Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 46 falsefalseAmount arising during the year, Net-of-tax amount34false0us-gaap_OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeBeforeTaxus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truefalsefalse-6990000000-6990falsefalsefalsefalsefalse2truefalsefalse-2670000000-2670falsefalsefalsefalsefalse3truefalsefalse-19219000000-19219falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryPre tax reclassification adjustment for accumulated gains and losses from derivative instrument designated and qualifying as the effective portion of cash flow hedges included in accumulated comprehensive income that was realized in net income during the period. A cash flow hedge is a hedge of the exposure to variability in the cash flows of a recognized asset or liability or a forecasted transaction that is attributable to a particular risk.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 18, 19 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 24 -Subparagraph b Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 31, 46 truefalseReclassification adjustments for gains and losses realized in net income, Before-tax amount35false0us-gaap_OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeTaxus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truefalsefalse29210000002921falsefalsefalsefalsefalse2truefalsefalse10680000001068falsefalsefalsefalsefalse3truefalsefalse76880000007688falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTax effect on reclassification adjustment for accumulated gains and losses from derivative instrument designated and qualifying as the effective portion of cash flow hedges included in accumulated comprehensive income that was realized in net income during the period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 25 truefalseReclassification adjustments for gains and losses realized in net income, Tax (expense) or benefit36false0us-gaap_OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTaxus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truefalsefalse-4069000000-4069falsefalsefalsefalsefalse2truefalsefalse-1602000000-1602falsefalsefalsefalsefalse3truefalsefalse-11531000000-11531falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryNet of tax effect of the reclassification adjustment for accumulated gains and losses from derivative instrument designated and qualifying as the effective portion of cash flow hedges included in accumulated comprehensive income that was realized in net income during the period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 18, 19 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 24 -Subparagraph b Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 31, 46 truefalseReclassification adjustments for gains and losses realized in net income, Net-of-tax amount37false0us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesBeforeTaxPeriodIncreaseDecreaseus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse14190000001419falsefalsefalsefalsefalse2truefalsefalse-2372000000-2372falsefalsefalsefalsefalse3truefalsefalse39020000003902falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryPre tax change in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges, net of reclassifications into earnings during the period. A cash flow hedge is a hedge of the exposure to variability in the cash flows of a recognized asset or liability or a forecasted transaction that is attributable to a particular risk. Includes an entity's share of an equity investee's increase (decrease) in deferred hedging gains or losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 14, 17, 20, 24, 26 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 14, 17, 20, 26 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 45 -Subparagraph b(1) Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 31, 46 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 24 -Subparagraph b Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 46 falsefalseNet change during the year, Before-tax amount38false0us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxEffectPeriodIncreaseDecreaseus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse-652000000-652falsefalsefalsefalsefalse2truefalsefalse949000000949falsefalsefalsefalsefalse3truefalsefalse-1560000000-1560falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotal tax effect of the change in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges after taxes. The change includes an entity's share of an equity investee's increase (decrease) in deferred hedging gains or losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 25 falsefalseNet change during the year, Tax (expense) or benefit39false0us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecreaseus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse767000000767falsefalsefalsefalsefalse2truefalsefalse-1423000000-1423falsefalsefalsefalsefalse3truefalsefalse23420000002342falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryNet of tax effect change in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges after taxes. A cash flow hedge is a hedge of the exposure to variability in the cash flows of a recognized asset or liability or a forecasted transaction that is attributable to a particular risk. The change includes an entity's share of an equity investee's increase (decrease) in deferred hedging gains or losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 14, 17, 20, 26 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 31, 46 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 46 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 24 -Subparagraph b Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 14, 17, 20, 24, 26 falsefalseNet change during the year, Net-of-tax amount40true0us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecreaseAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalsePension liability adjustments:41false0us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTaxus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse-19170000000-19170falsefalsefalsefalsefalse2truefalsefalse-4115000000-4115falsefalsefalsefalsefalse3truefalsefalse-111215000000-111215falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryPretax change in the value of either the benefit obligation or the plan assets resulting from experience different from that assumed or from a change in an actuarial assumption, or the consequence of a decision to temporarily deviate from the substantive plan, that has not been recognized in net periodic benefit cost.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 17, 19, 24 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 4 -Subparagraph c, d Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph i Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 7 -Subparagraph a falsefalseAmount arising during the year, Before-tax amount42false0us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTaxus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse83140000008314falsefalsefalsefalsefalse2truefalsefalse18910000001891falsefalsefalsefalsefalse3truefalsefalse3923300000039233falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTax effect on the accumulated change in the value of either the projected benefit obligation or the plans assets resulting from experience different from that assumed or from a change in an actuarial assumption that has not been recognized in net periodic benefit cost pursuant to FAS 87 and 106.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 25 falsefalseAmount arising during the year, Tax (expense) or benefit43false0us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTaxus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse-10856000000-10856falsefalsefalsefalsefalse2truefalsefalse-2224000000-2224falsefalsefalsefalsefalse3truefalsefalse-71982000000-71982falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe accumulated change in the value of either the projected benefit obligation or the plans assets resulting from experience different from that assumed or from a change in an actuarial assumption that has not been recognized in net periodic benefit cost pursuant to FAS 87 and 106, after tax.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 4 -Subparagraph c, d Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 7 -Subparagraph a Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 17, 19, 24 falsefalseAmount arising during the year, Net-of-tax amount44false0us-gaap_OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostBeforeTaxus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truefalsefalse23230000002323falsefalsefalsefalsefalse2truefalsefalse19110000001911falsefalsefalsefalsefalse3truefalsefalse-4956000000-4956falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe net gain or loss previously recognized in other comprehensive income that is a reclassification adjustment of other comprehensive income as a result of being recognized as a component of net periodic benefit cost for the period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 4 -Subparagraph d Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph i Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 7 -Subparagraph a truefalseReclassification adjustments for gains and losses realized in net income, Before-tax amount45false0us-gaap_OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostTaxus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truefalsefalse-794000000-794falsefalsefalsefalsefalse2truefalsefalse-632000000-632falsefalsefalsefalsefalse3truefalsefalse20730000002073falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryFor each annual statement of income presented, the tax effect of the net gain or loss recognized in other comprehensive income that is a reclassification adjustment of other comprehensive income as a result of being recognized as a component of net periodic benefit cost for the period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 7 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 25 truefalseReclassification adjustments for gains and losses realized in net income, Tax (expense) or benefit46false0us-gaap_OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTaxus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truefalsefalse15290000001529falsefalsefalsefalsefalse2truefalsefalse12790000001279falsefalsefalsefalsefalse3truefalsefalse-2883000000-2883falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe adjustment out of other comprehensive income for actuarial gains (losses) recognized as a component of net periodic benefit cost during the period, after taxReference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 4 -Subparagraph c, d truefalseReclassification adjustments for gains and losses realized in net income, Net-of-tax amount47false0us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPeriodIncreaseDecreaseus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truefalsefalse-16847000000-16847falsefalsefalsefalsefalse2truefalsefalse-2204000000-2204falsefalsefalsefalsefalse3truefalsefalse-116171000000-116171falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAmounts recognized in other comprehensive income (but not yet recognized in net periodic benefit cost), including the net gain (loss) and net prior service cost (credit) arising during the period. Also includes reclassification adjustments out of other comprehensive income as a result of being recognized as components of net periodic benefit cost for the period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph C3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 14, 17, 22, 26 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 7 -Subparagraph a truefalseNet change during the year, Before-tax amount48false0us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansTaxus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truefalsefalse75200000007520falsefalsefalsefalsefalse2truefalsefalse12590000001259falsefalsefalsefalsefalse3truefalsefalse4130600000041306falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTax effects of the net changes to accumulated comprehensive income during the period related to benefit plans.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 25 truefalseNet change during the year, Tax (expense) or benefit49false0us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecreaseus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truefalsefalse-9327000000-9327falsefalsefalsefalsefalse2truefalsefalse-945000000-945falsefalsefalsefalsefalse3truefalsefalse-74865000000-74865falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryNet changes to accumulated comprehensive income during the period related to benefit plans, after tax.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 158 -Paragraph 7 -Subparagraph c Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 14, 17, 22, 26 truefalseNet change during the year, Net-of-tax amount50false0us-gaap_OtherComprehensiveIncomeLossBeforeTaxPeriodIncreaseDecreaseus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truefalsefalse-144558000000-144558falsefalsefalsefalsefalse2truefalsefalse3531900000035319falsefalsefalsefalsefalse3truefalsefalse-388570000000-388570falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThis element represents Other Comprehensive Income (Loss), Before Tax, for the period. The pretax revenues, expenses, gains, and losses that under generally accepted accounting principles are included in comprehensive income, but excluded from net income. Includes the entity's proportionate share of an investee's equity adjustments for other comprehensive income.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 18 -Paragraph 19 -Subparagraph e Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 22, 24, 121 truefalseOther Comprehensive Income (Loss), before Tax51false0us-gaap_OtherComprehensiveIncomeLossTaxus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truefalsefalse89340000008934falsefalsefalsefalsefalse2truefalsefalse-2100000000-2100falsefalsefalsefalsefalse3truefalsefalse4953000000049530falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTax effect of the change in accumulated other comprehensive income, that is, the tax effect on items included in other comprehensive income during the period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 36 -Subparagraph b Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 24 -Subparagraph b Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 31 -Article 5 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 truefalseOther comprehensive income (loss), Tax (expense) or benefit52false0us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truefalsefalse-135624000000-135624falsefalsefalsefalsefalse2truefalsefalse3321900000033219falsefalsefalsefalsefalse3truefalsefalse-339040000000-339040falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThis element represents Other Comprehensive Income (Loss), Net of Tax, for the period. Includes deferred gains (losses) on qualifying hedges, unrealized holding gains (losses) on available-for-sale securities, minimum pension liability, and cumulative translation adjustment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 22, 23, 24, 25 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 31 -Article 5 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 truefalseOther comprehensive income (loss), Net-of-tax amount53false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://canon.com/role/othercomprehensiveincomelossdetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalseJPYtruefalse{us-gaap_StatementEquityComponentsAxis} : Foreign currency translation adjustments [Member] 1/1/2010 - 12/31/2010 JPY (¥) ¥TwelveMonthsEnded_31Dec2010_Accumulated_Translation_Adjustment_Memberhttp://www.sec.gov/CIK0000016988duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseForeign currency translation adjustments [Member]us-gaap_StatementEquityComponentsAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_AccumulatedTranslationAdjustmentMemberus-gaap_StatementEquityComponentsAxisexplicitMemberJPYStandardhttp://www.xbrl.org/2003/iso4217JPYiso42170JPYJPY¥5falsefalseJPYtruefalse{us-gaap_StatementEquityComponentsAxis} : Foreign currency translation adjustments [Member] 1/1/2009 - 12/31/2009 JPY (¥) ¥TwelveMonthsEnded_31Dec2009_Accumulated_Translation_Adjustment_Memberhttp://www.sec.gov/CIK0000016988duration2009-01-01T00:00:002009-12-31T00:00:00falsefalseForeign currency translation adjustments [Member]us-gaap_StatementEquityComponentsAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_AccumulatedTranslationAdjustmentMemberus-gaap_StatementEquityComponentsAxisexplicitMemberJPYStandardhttp://www.xbrl.org/2003/iso4217JPYiso42170JPYJPY¥6falsefalseJPYtruefalse{us-gaap_StatementEquityComponentsAxis} : Foreign currency translation adjustments [Member] 1/1/2008 - 12/31/2008 JPY (¥) ¥TwelveMonthsEnded_31Dec2008_Accumulated_Translation_Adjustment_Memberhttp://www.sec.gov/CIK0000016988duration2008-01-01T00:00:002008-12-31T00:00:00falsefalseForeign currency translation adjustments [Member]us-gaap_StatementEquityComponentsAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_AccumulatedTranslationAdjustmentMemberus-gaap_StatementEquityComponentsAxisexplicitMemberJPYStandardhttp://www.xbrl.org/2003/iso4217JPYiso42170JPYJPY¥OthernaNo definition available.No authoritative reference available.falsefalseForeign currency translation adjustments [Member]54true0us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTaxAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseChange in accumulated other comprehensive income(loss)55false0us-gaap_CumulativeTranslationAdjustmentNetOfTaxPeriodIncreaseDecreaseus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse-122984000000-122984falsefalsefalsefalsefalse2truefalsefalse3334000000033340falsefalsefalsefalsefalse3truefalsefalse-258764000000-258764falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetarySubtotal of net change in cumulative translation adjustment before transfers included in determining net income.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 23, 24, 25, 26 falsefalseForeign currency translation adjustments, adjustments for the year60false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://canon.com/role/othercomprehensiveincomelossdetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse7falsefalseJPYtruefalse{us-gaap_StatementEquityComponentsAxis} : Net unrealized gains and losses on securities [Member] 1/1/2010 - 12/31/2010 JPY (¥) ¥TwelveMonthsEnded_31Dec2010_Accumulated_Net_Unrealized_Investment_Gain_Loss_Memberhttp://www.sec.gov/CIK0000016988duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseNet unrealized gains and losses on securities [Member]us-gaap_StatementEquityComponentsAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_AccumulatedNetUnrealizedInvestmentGainLossMemberus-gaap_StatementEquityComponentsAxisexplicitMemberJPYStandardhttp://www.xbrl.org/2003/iso4217JPYiso42170JPYJPY¥8falsefalseJPYtruefalse{us-gaap_StatementEquityComponentsAxis} : Net unrealized gains and losses on securities [Member] 1/1/2009 - 12/31/2009 JPY (¥) ¥TwelveMonthsEnded_31Dec2009_Accumulated_Net_Unrealized_Investment_Gain_Loss_Memberhttp://www.sec.gov/CIK0000016988duration2009-01-01T00:00:002009-12-31T00:00:00falsefalseNet unrealized gains and losses on securities [Member]us-gaap_StatementEquityComponentsAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_AccumulatedNetUnrealizedInvestmentGainLossMemberus-gaap_StatementEquityComponentsAxisexplicitMemberJPYStandardhttp://www.xbrl.org/2003/iso4217JPYiso42170JPYJPY¥9falsefalseJPYtruefalse{us-gaap_StatementEquityComponentsAxis} : Net unrealized gains and losses on securities [Member] 1/1/2008 - 12/31/2008 JPY (¥) ¥TwelveMonthsEnded_31Dec2008_Accumulated_Net_Unrealized_Investment_Gain_Loss_Memberhttp://www.sec.gov/CIK0000016988duration2008-01-01T00:00:002008-12-31T00:00:00falsefalseNet unrealized gains and losses on securities [Member]us-gaap_StatementEquityComponentsAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_AccumulatedNetUnrealizedInvestmentGainLossMemberus-gaap_StatementEquityComponentsAxisexplicitMemberJPYStandardhttp://www.xbrl.org/2003/iso4217JPYiso42170JPYJPY¥OthernaNo definition available.No authoritative reference available.falsefalseNet unrealized gains and losses on securities [Member]61true0us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTaxAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseChange in accumulated other comprehensive income(loss)62false0us-gaap_AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLossus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse-265000000-265falsetruefalsefalsefalse2truefalsefalse21500000002150falsetruefalsefalsefalse3truefalsefalse-5152000000-5152falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThis item represents the change in net unrealized holding gain or loss on available-for-sale securities that has been included in accumulated other comprehensive income, a separate component of shareholders' equity, during the period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 21 -Subparagraph d falsefalseNet unrealized gains and losses on securities, adjustments for the year357Other Comprehensive Income (Loss) (Details) (JPY ¥)MillionsUnKnownUnKnownUnKnownfalsetrue