2.2.0.25truefalse06222 - Disclosure - Segment Information (Details 2)truefalseIn Millionsfalse1falsefalseUSDfalsefalse1/1/2010 - 12/31/2010 USD ($) USD ($) / shares $Jan-01-2010_Dec-31-2010http://www.sec.gov/CIK0001056239duration2010-01-01T00:00:002010-12-31T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDEPSDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2falsefalseUSDfalsefalse1/1/2009 - 12/31/2009 USD ($) USD ($) / shares $TwelveMonthsEnded_31Dec2009http://www.sec.gov/CIK0001056239duration2009-01-01T00:00:002009-12-31T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDEPSDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$3falsefalseUSDfalsefalse1/1/2008 - 12/31/2008 USD ($) USD ($) / shares $TwelveMonthsEnded_31Dec2008http://www.sec.gov/CIK0001056239duration2008-01-01T00:00:002008-12-31T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDEPSDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0PureStandardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$2true0us-gaap_EntityWideInformationAboutGeographicAreasAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseCompany's sales attributable to U.S. customers and foreign customers3false0us-gaap_Revenuesus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse1568000000015680falsetruefalsefalsefalse2truefalsefalse1561500000015615falsetruefalsefalsefalse3truefalsefalse1490100000014901falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 falsefalseNet Sales4false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://l-3com.com/role/segmentinformationdetails21falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalseUSDtruefalse{us-gaap_StatementGeographicalAxis} : United States [Member] 1/1/2010 - 12/31/2010 USD ($) $TwelveMonthsEnded_31Dec2010_United_States_Memberhttp://www.sec.gov/CIK0001056239duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseUnited States [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldilll_UnitedStatesMemberus-gaap_StatementGeographicalAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$5falsefalseUSDtruefalse{us-gaap_StatementGeographicalAxis} : United States [Member] 1/1/2009 - 12/31/2009 USD ($) $TwelveMonthsEnded_31Dec2009_United_States_Memberhttp://www.sec.gov/CIK0001056239duration2009-01-01T00:00:002009-12-31T00:00:00falsefalseUnited States [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldilll_UnitedStatesMemberus-gaap_StatementGeographicalAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$6falsefalseUSDtruefalse{us-gaap_StatementGeographicalAxis} : United States [Member] 1/1/2008 - 12/31/2008 USD ($) $TwelveMonthsEnded_31Dec2008_United_States_Memberhttp://www.sec.gov/CIK0001056239duration2008-01-01T00:00:002008-12-31T00:00:00falsefalseUnited States [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldilll_UnitedStatesMemberus-gaap_StatementGeographicalAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseUnited States [Member]5true0us-gaap_EntityWideInformationAboutGeographicAreasAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseCompany's sales attributable to U.S. customers and foreign customers6false0us-gaap_Revenuesus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse1374700000013747falsefalsefalsefalsefalse2truefalsefalse1366600000013666falsefalsefalsefalsefalse3truefalsefalse1281500000012815falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 falsefalseNet Sales7false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://l-3com.com/role/segmentinformationdetails21falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse7falsefalseUSDtruefalse{us-gaap_StatementGeographicalAxis} : Canada [Member] 1/1/2010 - 12/31/2010 USD ($) $TwelveMonthsEnded_31Dec2010_Canada_Memberhttp://www.sec.gov/CIK0001056239duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseCanada [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldilll_CanadaMemberus-gaap_StatementGeographicalAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$8falsefalseUSDtruefalse{us-gaap_StatementGeographicalAxis} : Canada [Member] 1/1/2009 - 12/31/2009 USD ($) $TwelveMonthsEnded_31Dec2009_Canada_Memberhttp://www.sec.gov/CIK0001056239duration2009-01-01T00:00:002009-12-31T00:00:00falsefalseCanada [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldilll_CanadaMemberus-gaap_StatementGeographicalAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$9falsefalseUSDtruefalse{us-gaap_StatementGeographicalAxis} : Canada [Member] 1/1/2008 - 12/31/2008 USD ($) $TwelveMonthsEnded_31Dec2008_Canada_Memberhttp://www.sec.gov/CIK0001056239duration2008-01-01T00:00:002008-12-31T00:00:00falsefalseCanada [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldilll_CanadaMemberus-gaap_StatementGeographicalAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseCanada [Member]8true0us-gaap_EntityWideInformationAboutGeographicAreasAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseCompany's sales attributable to U.S. customers and foreign customers9false0us-gaap_Revenuesus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse305000000305falsefalsefalsefalsefalse2truefalsefalse283000000283falsefalsefalsefalsefalse3truefalsefalse308000000308falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 falsefalseNet Sales10false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://l-3com.com/role/segmentinformationdetails21falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse10falsefalseUSDtruefalse{us-gaap_StatementGeographicalAxis} : United Kingdom [Member] 1/1/2010 - 12/31/2010 USD ($) $TwelveMonthsEnded_31Dec2010_Segment_Geographical_Groups_Of_Countries_Group_One_Memberhttp://www.sec.gov/CIK0001056239duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseUnited Kingdom [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_SegmentGeographicalGroupsOfCountriesGroupOneMemberus-gaap_StatementGeographicalAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$11falsefalseUSDtruefalse{us-gaap_StatementGeographicalAxis} : United Kingdom [Member] 1/1/2009 - 12/31/2009 USD ($) $TwelveMonthsEnded_31Dec2009_Segment_Geographical_Groups_Of_Countries_Group_One_Memberhttp://www.sec.gov/CIK0001056239duration2009-01-01T00:00:002009-12-31T00:00:00falsefalseUnited Kingdom [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_SegmentGeographicalGroupsOfCountriesGroupOneMemberus-gaap_StatementGeographicalAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$12falsefalseUSDtruefalse{us-gaap_StatementGeographicalAxis} : United Kingdom [Member] 1/1/2008 - 12/31/2008 USD ($) $TwelveMonthsEnded_31Dec2008_Segment_Geographical_Groups_Of_Countries_Group_One_Memberhttp://www.sec.gov/CIK0001056239duration2008-01-01T00:00:002008-12-31T00:00:00falsefalseUnited Kingdom [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_SegmentGeographicalGroupsOfCountriesGroupOneMemberus-gaap_StatementGeographicalAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseUnited Kingdom [Member]11true0us-gaap_EntityWideInformationAboutGeographicAreasAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseCompany's sales attributable to U.S. customers and foreign customers12false0us-gaap_Revenuesus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse231000000231falsefalsefalsefalsefalse2truefalsefalse173000000173falsefalsefalsefalsefalse3truefalsefalse212000000212falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 falsefalseNet Sales13false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://l-3com.com/role/segmentinformationdetails21falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse13falsefalseUSDtruefalse{us-gaap_StatementGeographicalAxis} : Germany [Member] 1/1/2010 - 12/31/2010 USD ($) $TwelveMonthsEnded_31Dec2010_Germany_Memberhttp://www.sec.gov/CIK0001056239duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseGermany [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldilll_GermanyMemberus-gaap_StatementGeographicalAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$14falsefalseUSDtruefalse{us-gaap_StatementGeographicalAxis} : Germany [Member] 1/1/2009 - 12/31/2009 USD ($) $TwelveMonthsEnded_31Dec2009_Germany_Memberhttp://www.sec.gov/CIK0001056239duration2009-01-01T00:00:002009-12-31T00:00:00falsefalseGermany [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldilll_GermanyMemberus-gaap_StatementGeographicalAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$15falsefalseUSDtruefalse{us-gaap_StatementGeographicalAxis} : Germany [Member] 1/1/2008 - 12/31/2008 USD ($) $TwelveMonthsEnded_31Dec2008_Germany_Memberhttp://www.sec.gov/CIK0001056239duration2008-01-01T00:00:002008-12-31T00:00:00falsefalseGermany [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldilll_GermanyMemberus-gaap_StatementGeographicalAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseGermany [Member]14true0us-gaap_EntityWideInformationAboutGeographicAreasAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseCompany's sales attributable to U.S. customers and foreign customers15false0us-gaap_Revenuesus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse215000000215falsefalsefalsefalsefalse2truefalsefalse276000000276falsefalsefalsefalsefalse3truefalsefalse324000000324falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 falsefalseNet Sales16false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://l-3com.com/role/segmentinformationdetails21falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse16falsefalseUSDtruefalse{us-gaap_StatementGeographicalAxis} : Australia [Member] 1/1/2010 - 12/31/2010 USD ($) $TwelveMonthsEnded_31Dec2010_Australia_Memberhttp://www.sec.gov/CIK0001056239duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseAustralia [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldilll_AustraliaMemberus-gaap_StatementGeographicalAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$17falsefalseUSDtruefalse{us-gaap_StatementGeographicalAxis} : Australia [Member] 1/1/2009 - 12/31/2009 USD ($) $TwelveMonthsEnded_31Dec2009_Australia_Memberhttp://www.sec.gov/CIK0001056239duration2009-01-01T00:00:002009-12-31T00:00:00falsefalseAustralia [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldilll_AustraliaMemberus-gaap_StatementGeographicalAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$18falsefalseUSDtruefalse{us-gaap_StatementGeographicalAxis} : Australia [Member] 1/1/2008 - 12/31/2008 USD ($) $TwelveMonthsEnded_31Dec2008_Australia_Memberhttp://www.sec.gov/CIK0001056239duration2008-01-01T00:00:002008-12-31T00:00:00falsefalseAustralia [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldilll_AustraliaMemberus-gaap_StatementGeographicalAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseAustralia [Member]17true0us-gaap_EntityWideInformationAboutGeographicAreasAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseCompany's sales attributable to U.S. customers and foreign customers18false0us-gaap_Revenuesus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse164000000164falsefalsefalsefalsefalse2truefalsefalse176000000176falsefalsefalsefalsefalse3truefalsefalse147000000147falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 falsefalseNet Sales19false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://l-3com.com/role/segmentinformationdetails21falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse19falsefalseUSDtruefalse{us-gaap_StatementGeographicalAxis} : South Korea [Member] 1/1/2010 - 12/31/2010 USD ($) $TwelveMonthsEnded_31Dec2010_South_Korea_Memberhttp://www.sec.gov/CIK0001056239duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseSouth Korea [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldilll_SouthKoreaMemberus-gaap_StatementGeographicalAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$20falsefalseUSDtruefalse{us-gaap_StatementGeographicalAxis} : South Korea [Member] 1/1/2009 - 12/31/2009 USD ($) $TwelveMonthsEnded_31Dec2009_South_Korea_Memberhttp://www.sec.gov/CIK0001056239duration2009-01-01T00:00:002009-12-31T00:00:00falsefalseSouth Korea [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldilll_SouthKoreaMemberus-gaap_StatementGeographicalAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$21falsefalseUSDtruefalse{us-gaap_StatementGeographicalAxis} : South Korea [Member] 1/1/2008 - 12/31/2008 USD ($) $TwelveMonthsEnded_31Dec2008_South_Korea_Memberhttp://www.sec.gov/CIK0001056239duration2008-01-01T00:00:002008-12-31T00:00:00falsefalseSouth Korea [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldilll_SouthKoreaMemberus-gaap_StatementGeographicalAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseSouth Korea [Member]20true0us-gaap_EntityWideInformationAboutGeographicAreasAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseCompany's sales attributable to U.S. customers and foreign customers21false0us-gaap_Revenuesus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse100000000100falsefalsefalsefalsefalse2truefalsefalse132000000132falsefalsefalsefalsefalse3truefalsefalse140000000140falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 falsefalseNet Sales22false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://l-3com.com/role/segmentinformationdetails21falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse22falsefalseUSDtruefalse{us-gaap_StatementGeographicalAxis} : Italy [Member] 1/1/2010 - 12/31/2010 USD ($) $TwelveMonthsEnded_31Dec2010_Italy_Memberhttp://www.sec.gov/CIK0001056239duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseItaly [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldilll_ItalyMemberus-gaap_StatementGeographicalAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$23falsefalseUSDtruefalse{us-gaap_StatementGeographicalAxis} : Italy [Member] 1/1/2009 - 12/31/2009 USD ($) $TwelveMonthsEnded_31Dec2009_Italy_Memberhttp://www.sec.gov/CIK0001056239duration2009-01-01T00:00:002009-12-31T00:00:00falsefalseItaly [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldilll_ItalyMemberus-gaap_StatementGeographicalAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$24falsefalseUSDtruefalse{us-gaap_StatementGeographicalAxis} : Italy [Member] 1/1/2008 - 12/31/2008 USD ($) $TwelveMonthsEnded_31Dec2008_Italy_Memberhttp://www.sec.gov/CIK0001056239duration2008-01-01T00:00:002008-12-31T00:00:00falsefalseItaly [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldilll_ItalyMemberus-gaap_StatementGeographicalAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseItaly [Member]23true0us-gaap_EntityWideInformationAboutGeographicAreasAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseCompany's sales attributable to U.S. customers and foreign customers24false0us-gaap_Revenuesus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse6800000068falsefalsefalsefalsefalse2truefalsefalse7600000076falsefalsefalsefalsefalse3truefalsefalse9300000093falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 falsefalseNet Sales25false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://l-3com.com/role/segmentinformationdetails21falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse25falsefalseUSDtruefalse{us-gaap_StatementGeographicalAxis} : China [Member] 1/1/2010 - 12/31/2010 USD ($) $TwelveMonthsEnded_31Dec2010_China_Memberhttp://www.sec.gov/CIK0001056239duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseChina [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldilll_ChinaMemberus-gaap_StatementGeographicalAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$26falsefalseUSDtruefalse{us-gaap_StatementGeographicalAxis} : China [Member] 1/1/2009 - 12/31/2009 USD ($) $TwelveMonthsEnded_31Dec2009_China_Memberhttp://www.sec.gov/CIK0001056239duration2009-01-01T00:00:002009-12-31T00:00:00falsefalseChina [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldilll_ChinaMemberus-gaap_StatementGeographicalAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$27falsefalseUSDtruefalse{us-gaap_StatementGeographicalAxis} : China [Member] 1/1/2008 - 12/31/2008 USD ($) $TwelveMonthsEnded_31Dec2008_China_Memberhttp://www.sec.gov/CIK0001056239duration2008-01-01T00:00:002008-12-31T00:00:00falsefalseChina [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldilll_ChinaMemberus-gaap_StatementGeographicalAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseChina [Member]26true0us-gaap_EntityWideInformationAboutGeographicAreasAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseCompany's sales attributable to U.S. customers and foreign customers27false0us-gaap_Revenuesus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse6500000065falsefalsefalsefalsefalse2truefalsefalse6300000063falsefalsefalsefalsefalse3truefalsefalse5900000059falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 falsefalseNet Sales28false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://l-3com.com/role/segmentinformationdetails21falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse28falsefalseUSDtruefalse{us-gaap_StatementGeographicalAxis} : Other [Member] 1/1/2010 - 12/31/2010 USD ($) $TwelveMonthsEnded_31Dec2010_Segment_Geographical_Groups_Of_Countries_Group_Two_Memberhttp://www.sec.gov/CIK0001056239duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseOther [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_SegmentGeographicalGroupsOfCountriesGroupTwoMemberus-gaap_StatementGeographicalAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$29falsefalseUSDtruefalse{us-gaap_StatementGeographicalAxis} : Other [Member] 1/1/2009 - 12/31/2009 USD ($) $TwelveMonthsEnded_31Dec2009_Segment_Geographical_Groups_Of_Countries_Group_Two_Memberhttp://www.sec.gov/CIK0001056239duration2009-01-01T00:00:002009-12-31T00:00:00falsefalseOther [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_SegmentGeographicalGroupsOfCountriesGroupTwoMemberus-gaap_StatementGeographicalAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$30falsefalseUSDtruefalse{us-gaap_StatementGeographicalAxis} : Other [Member] 1/1/2008 - 12/31/2008 USD ($) $TwelveMonthsEnded_31Dec2008_Segment_Geographical_Groups_Of_Countries_Group_Two_Memberhttp://www.sec.gov/CIK0001056239duration2008-01-01T00:00:002008-12-31T00:00:00falsefalseOther [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_SegmentGeographicalGroupsOfCountriesGroupTwoMemberus-gaap_StatementGeographicalAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseOther [Member]29true0us-gaap_EntityWideInformationAboutGeographicAreasAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseCompany's sales attributable to U.S. customers and foreign customers30false0us-gaap_Revenuesus-gaaptruecreditdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse785000000785falsefalsefalsefalsefalse2truefalsefalse770000000770falsefalsefalsefalsefalse3truefalsefalse803000000803falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). 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