2.2.0.25truefalse06231 - Disclosure - Segment Information (Details 1)truefalseIn Millions, unless otherwise specifiedfalse1falsefalseJPYfalsefalse1/1/2010 - 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_EntityWideDisclosureOnGeographicAreasRevenueFromExternalCustomersAttributedToIndividualForeignCountriesLineItemsus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringLine items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.falsefalseNet sales [Line Items]3false0us-gaap_EntityWideDisclosureOnGeographicAreasRevenueFromExternalCustomersAttributedToIndividualForeignCountriesAmountus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse37069010000003706901falsetruefalsefalsefalse2truefalsefalse32092010000003209201falsetruefalsefalsefalse3truefalsefalse40941610000004094161falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAmount of revenue from external customers attributed to an individual foreign country from which revenue is material. An entity also may provide subtotals of geographic information about groups of countries.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 38 -Subparagraph a falsefalseNet sales4true0us-gaap_EntityWideDisclosureOnGeographicAreasLongLivedAssetsInIndividualForeignCountriesLineItemsus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringLine items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.falsefalseLong-lived assets [Line Items]5false0us-gaap_EntityWideDisclosureOnGeographicAreasLongLivedAssetsInIndividualForeignCountriesAmountus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse13549890000001354989falsefalsefalsefalsefalse2truefalsefalse13871810000001387181falsefalsefalsefalsefalse3truefalsefalse14763260000001476326falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAmount of long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets located in foreign countries. An entity also may provide subtotals of geographic information about groups of countries; accordingly, this element also may be used to provide the amount of such long-lived assets for a group of countries.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 38 -Subparagraph b falsefalseLong-Lived assets6true0caj_SegmentInformationTextualAbstractcajfalsenadurationSegment Information (Textual) [Abstract].falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringSegment Information (Textual) [Abstract].falsefalseSegment Information (Textual) [Abstract]7false0caj_MinimumSalesAsPercentageOfNetConsolidatedSaleToConductBusinessInAnyIndividualCountrycajfalsenadurationMinimum sales as a percentage of net consolidated sale to conduct business in any individual Country.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truetruefalse0.10.1falsefalsefalsefalsefalse2falsetruefalse00falsefalsefalsefalsefalse3falsetruefalse00falsefalsefalsefalsefalseOtherus-types:percentItemTypepureMinimum sales as a percentage of net consolidated sale to conduct business in any individual Country.No authoritative reference available.falsefalseMinimum sales as a percentage of net consolidated sale to conduct business in any individual Country8false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://canon.com/role/segmentinformationdetails11falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalseJPYtruefalse{us-gaap_StatementGeographicalAxis} : Japan [Member] 1/1/2010 - 12/31/2010 JPY (¥) ¥TwelveMonthsEnded_31Dec2010_Domestic_Country_Member_2http://www.sec.gov/CIK0000016988duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseJapan [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_DomesticCountryMemberus-gaap_StatementGeographicalAxisexplicitMemberJPYStandardhttp://www.xbrl.org/2003/iso4217JPYiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0JPYJPY¥5falsefalseJPYtruefalse{us-gaap_StatementGeographicalAxis} : Japan [Member] 1/1/2009 - 12/31/2009 JPY (¥) ¥TwelveMonthsEnded_31Dec2009_Domestic_Country_Member_2http://www.sec.gov/CIK0000016988duration2009-01-01T00:00:002009-12-31T00:00:00falsefalseJapan [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_DomesticCountryMemberus-gaap_StatementGeographicalAxisexplicitMemberJPYStandardhttp://www.xbrl.org/2003/iso4217JPYiso42170JPYJPY¥6falsefalseJPYtruefalse{us-gaap_StatementGeographicalAxis} : Japan [Member] 1/1/2008 - 12/31/2008 JPY (¥) ¥TwelveMonthsEnded_31Dec2008_Domestic_Country_Memberhttp://www.sec.gov/CIK0000016988duration2008-01-01T00:00:002008-12-31T00:00:00falsefalseJapan [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_DomesticCountryMemberus-gaap_StatementGeographicalAxisexplicitMemberJPYStandardhttp://www.xbrl.org/2003/iso4217JPYiso42170JPYJPY¥OthernaNo definition available.No authoritative reference available.falsefalseJapan [Member]9true0us-gaap_EntityWideDisclosureOnGeographicAreasRevenueFromExternalCustomersAttributedToIndividualForeignCountriesLineItemsus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringLine items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.falsefalseNet sales [Line Items]10false0us-gaap_EntityWideDisclosureOnGeographicAreasRevenueFromExternalCustomersAttributedToIndividualForeignCountriesAmountus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse695749000000695749falsefalsefalsefalsefalse2truefalsefalse702344000000702344falsefalsefalsefalsefalse3truefalsefalse868280000000868280falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAmount of revenue from external customers attributed to an individual foreign country from which revenue is material. An entity also may provide subtotals of geographic information about groups of countries.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 38 -Subparagraph a falsefalseNet sales11true0us-gaap_EntityWideDisclosureOnGeographicAreasLongLivedAssetsInIndividualForeignCountriesLineItemsus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringLine items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.falsefalseLong-lived assets [Line Items]12false0us-gaap_EntityWideDisclosureOnGeographicAreasLongLivedAssetsInIndividualForeignCountriesAmountus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse11049490000001104949falsefalsefalsefalsefalse2truefalsefalse12058870000001205887falsefalsefalsefalsefalse3truefalsefalse13140920000001314092falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAmount of long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets located in foreign countries. An entity also may provide subtotals of geographic information about groups of countries; accordingly, this element also may be used to provide the amount of such long-lived assets for a group of countries.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 38 -Subparagraph b falsefalseLong-Lived assets14false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://canon.com/role/segmentinformationdetails11falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse7falsefalseJPYtruefalse{us-gaap_StatementGeographicalAxis} : Americas [Member] 1/1/2010 - 12/31/2010 JPY (¥) ¥TwelveMonthsEnded_31Dec2010_Americas_Memberhttp://www.sec.gov/CIK0000016988duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseAmericas [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldicaj_AmericasMemberus-gaap_StatementGeographicalAxisexplicitMemberJPYStandardhttp://www.xbrl.org/2003/iso4217JPYiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0JPYJPY¥8falsefalseJPYtruefalse{us-gaap_StatementGeographicalAxis} : Americas [Member] 1/1/2009 - 12/31/2009 JPY (¥) ¥TwelveMonthsEnded_31Dec2009_Americas_Memberhttp://www.sec.gov/CIK0000016988duration2009-01-01T00:00:002009-12-31T00:00:00falsefalseAmericas [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldicaj_AmericasMemberus-gaap_StatementGeographicalAxisexplicitMemberJPYStandardhttp://www.xbrl.org/2003/iso4217JPYiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0JPYJPY¥9falsefalseJPYtruefalse{us-gaap_StatementGeographicalAxis} : Americas [Member] 1/1/2008 - 12/31/2008 JPY (¥) ¥TwelveMonthsEnded_31Dec2008_Americas_Memberhttp://www.sec.gov/CIK0000016988duration2008-01-01T00:00:002008-12-31T00:00:00falsefalseAmericas [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldicaj_AmericasMemberus-gaap_StatementGeographicalAxisexplicitMemberJPYStandardhttp://www.xbrl.org/2003/iso4217JPYiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0JPYJPY¥OthernaNo definition available.No authoritative reference available.falsefalseAmericas [Member]15true0us-gaap_EntityWideDisclosureOnGeographicAreasRevenueFromExternalCustomersAttributedToIndividualForeignCountriesLineItemsus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringLine items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.falsefalseNet sales [Line Items]16false0us-gaap_EntityWideDisclosureOnGeographicAreasRevenueFromExternalCustomersAttributedToIndividualForeignCountriesAmountus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse10232990000001023299falsefalsefalsefalsefalse2truefalsefalse894154000000894154falsefalsefalsefalsefalse3truefalsefalse11545710000001154571falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAmount of revenue from external customers attributed to an individual foreign country from which revenue is material. An entity also may provide subtotals of geographic information about groups of countries.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 38 -Subparagraph a falsefalseNet sales17true0us-gaap_EntityWideDisclosureOnGeographicAreasLongLivedAssetsInIndividualForeignCountriesLineItemsus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringLine items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.falsefalseLong-lived assets [Line Items]18false0us-gaap_EntityWideDisclosureOnGeographicAreasLongLivedAssetsInIndividualForeignCountriesAmountus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse6903400000069034falsefalsefalsefalsefalse2truefalsefalse5927300000059273falsefalsefalsefalsefalse3truefalsefalse4343500000043435falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAmount of long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets located in foreign countries. An entity also may provide subtotals of geographic information about groups of countries; accordingly, this element also may be used to provide the amount of such long-lived assets for a group of countries.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 38 -Subparagraph b falsefalseLong-Lived assets20false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://canon.com/role/segmentinformationdetails11falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse10falsefalseJPYtruefalse{us-gaap_StatementGeographicalAxis} : Europe [Member] 1/1/2010 - 12/31/2010 JPY (¥) ¥TwelveMonthsEnded_31Dec2010_Europe_Memberhttp://www.sec.gov/CIK0000016988duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseEurope [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldicaj_EuropeMemberus-gaap_StatementGeographicalAxisexplicitMemberJPYStandardhttp://www.xbrl.org/2003/iso4217JPYiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0JPYJPY¥11falsefalseJPYtruefalse{us-gaap_StatementGeographicalAxis} : Europe [Member] 1/1/2009 - 12/31/2009 JPY (¥) ¥TwelveMonthsEnded_31Dec2009_Europe_Memberhttp://www.sec.gov/CIK0000016988duration2009-01-01T00:00:002009-12-31T00:00:00falsefalseEurope [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldicaj_EuropeMemberus-gaap_StatementGeographicalAxisexplicitMemberJPYStandardhttp://www.xbrl.org/2003/iso4217JPYiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0JPYJPY¥12falsefalseJPYtruefalse{us-gaap_StatementGeographicalAxis} : Europe [Member] 1/1/2008 - 12/31/2008 JPY (¥) ¥TwelveMonthsEnded_31Dec2008_Europe_Memberhttp://www.sec.gov/CIK0000016988duration2008-01-01T00:00:002008-12-31T00:00:00falsefalseEurope [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldicaj_EuropeMemberus-gaap_StatementGeographicalAxisexplicitMemberJPYStandardhttp://www.xbrl.org/2003/iso4217JPYiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0JPYJPY¥OthernaNo definition available.No authoritative reference available.falsefalseEurope [Member]21true0us-gaap_EntityWideDisclosureOnGeographicAreasRevenueFromExternalCustomersAttributedToIndividualForeignCountriesLineItemsus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringLine items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.falsefalseNet sales [Line Items]22false0us-gaap_EntityWideDisclosureOnGeographicAreasRevenueFromExternalCustomersAttributedToIndividualForeignCountriesAmountus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse11724740000001172474falsefalsefalsefalsefalse2truefalsefalse995150000000995150falsefalsefalsefalsefalse3truefalsefalse13414000000001341400falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAmount of revenue from external customers attributed to an individual foreign country from which revenue is material. An entity also may provide subtotals of geographic information about groups of countries.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 38 -Subparagraph a falsefalseNet sales23true0us-gaap_EntityWideDisclosureOnGeographicAreasLongLivedAssetsInIndividualForeignCountriesLineItemsus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringLine items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.falsefalseLong-lived assets [Line Items]24false0us-gaap_EntityWideDisclosureOnGeographicAreasLongLivedAssetsInIndividualForeignCountriesAmountus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse108160000000108160falsefalsefalsefalsefalse2truefalsefalse4487500000044875falsefalsefalsefalsefalse3truefalsefalse4739200000047392falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAmount of long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets located in foreign countries. An entity also may provide subtotals of geographic information about groups of countries; accordingly, this element also may be used to provide the amount of such long-lived assets for a group of countries.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 38 -Subparagraph b falsefalseLong-Lived assets26false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://canon.com/role/segmentinformationdetails11falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse13falsefalseJPYtruefalse{us-gaap_StatementGeographicalAxis} : Asia and Oceania [Member] 1/1/2010 - 12/31/2010 JPY (¥) ¥TwelveMonthsEnded_31Dec2010_Asia_And_Oceania_Memberhttp://www.sec.gov/CIK0000016988duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseAsia and Oceania [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldicaj_AsiaAndOceaniaMemberus-gaap_StatementGeographicalAxisexplicitMemberJPYStandardhttp://www.xbrl.org/2003/iso4217JPYiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0JPYJPY¥14falsefalseJPYtruefalse{us-gaap_StatementGeographicalAxis} : Asia and Oceania [Member] 1/1/2009 - 12/31/2009 JPY (¥) ¥TwelveMonthsEnded_31Dec2009_Asia_And_Oceania_Memberhttp://www.sec.gov/CIK0000016988duration2009-01-01T00:00:002009-12-31T00:00:00falsefalseAsia and Oceania [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldicaj_AsiaAndOceaniaMemberus-gaap_StatementGeographicalAxisexplicitMemberJPYStandardhttp://www.xbrl.org/2003/iso4217JPYiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0JPYJPY¥15falsefalseJPYtruefalse{us-gaap_StatementGeographicalAxis} : Asia and Oceania [Member] 1/1/2008 - 12/31/2008 JPY (¥) ¥TwelveMonthsEnded_31Dec2008_Asia_And_Oceania_Memberhttp://www.sec.gov/CIK0000016988duration2008-01-01T00:00:002008-12-31T00:00:00falsefalseAsia and Oceania [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldicaj_AsiaAndOceaniaMemberus-gaap_StatementGeographicalAxisexplicitMemberJPYStandardhttp://www.xbrl.org/2003/iso4217JPYiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0JPYJPY¥OthernaNo definition available.No authoritative reference available.falsefalseAsia and Oceania [Member]27true0us-gaap_EntityWideDisclosureOnGeographicAreasRevenueFromExternalCustomersAttributedToIndividualForeignCountriesLineItemsus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringLine items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.falsefalseNet sales [Line Items]28false0us-gaap_EntityWideDisclosureOnGeographicAreasRevenueFromExternalCustomersAttributedToIndividualForeignCountriesAmountus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse815379000000815379falsefalsefalsefalsefalse2truefalsefalse617553000000617553falsefalsefalsefalsefalse3truefalsefalse729910000000729910falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAmount of revenue from external customers attributed to an individual foreign country from which revenue is material. An entity also may provide subtotals of geographic information about groups of countries.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 38 -Subparagraph a falsefalseNet sales29true0us-gaap_EntityWideDisclosureOnGeographicAreasLongLivedAssetsInIndividualForeignCountriesLineItemsus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringLine items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.falsefalseLong-lived assets [Line Items]30false0us-gaap_EntityWideDisclosureOnGeographicAreasLongLivedAssetsInIndividualForeignCountriesAmountus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse7284600000072846falsefalsefalsefalsefalse2truefalsefalse7714600000077146falsefalsefalsefalsefalse3truefalsefalse7140700000071407falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAmount of long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets located in foreign countries. An entity also may provide subtotals of geographic information about groups of countries; accordingly, this element also may be used to provide the amount of such long-lived assets for a group of countries.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 38 -Subparagraph b falsefalseLong-Lived assets32false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://canon.com/role/segmentinformationdetails11falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse16falsefalseJPYtruefalse{us-gaap_StatementGeographicalAxis} : United States [Member] 1/1/2010 - 12/31/2010 JPY (¥) ¥TwelveMonthsEnded_31Dec2010_United_States_Memberhttp://www.sec.gov/CIK0000016988duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseUnited States [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldicaj_UnitedStatesMemberus-gaap_StatementGeographicalAxisexplicitMemberJPYStandardhttp://www.xbrl.org/2003/iso4217JPYiso42170JPYJPY¥17falsefalseJPYtruefalse{us-gaap_StatementGeographicalAxis} : United States [Member] 1/1/2009 - 12/31/2009 JPY (¥) ¥TwelveMonthsEnded_31Dec2009_United_States_Memberhttp://www.sec.gov/CIK0000016988duration2009-01-01T00:00:002009-12-31T00:00:00falsefalseUnited States [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldicaj_UnitedStatesMemberus-gaap_StatementGeographicalAxisexplicitMemberJPYStandardhttp://www.xbrl.org/2003/iso4217JPYiso42170JPYJPY¥18falsefalseJPYtruefalse{us-gaap_StatementGeographicalAxis} : United States [Member] 1/1/2008 - 12/31/2008 JPY (¥) ¥TwelveMonthsEnded_31Dec2008_United_States_Memberhttp://www.sec.gov/CIK0000016988duration2008-01-01T00:00:002008-12-31T00:00:00falsefalseUnited States [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldicaj_UnitedStatesMemberus-gaap_StatementGeographicalAxisexplicitMemberJPYStandardhttp://www.xbrl.org/2003/iso4217JPYiso42170JPYJPY¥OthernaNo definition available.No authoritative reference available.falsefalseUnited States [Member]33true0us-gaap_EntityWideDisclosureOnGeographicAreasRevenueFromExternalCustomersAttributedToIndividualForeignCountriesLineItemsus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringLine items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.falsefalseNet sales [Line Items]34false0us-gaap_EntityWideDisclosureOnGeographicAreasRevenueFromExternalCustomersAttributedToIndividualForeignCountriesAmountus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse836645000000836645falsetruefalsefalsefalse2truefalsefalse793428000000793428falsetruefalsefalsefalse3truefalsefalse10433330000001043333falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAmount of revenue from external customers attributed to an individual foreign country from which revenue is material. An entity also may provide subtotals of geographic information about groups of countries.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 38 -Subparagraph a falsefalseNet sales329Segment Information (Details 1) (JPY ¥)MillionsUnKnownUnKnownUnKnowntruetrue