2.2.0.25truefalse41302 - Disclosure - Income Taxes (Components of income (loss) before income taxes) (Details)truefalseIn Thousandsfalse1falsefalseUSDfalsefalse1/1/2010 - 12/31/2010 USD ($) USD ($) / shares $Duration_1_1_2010_To_12_31_2010http://www.sec.gov/CIK0001130385duration2010-01-01T00:00:002010-12-31T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit15Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0Unit13Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$2falsefalseUSDfalsefalse12/27/2008 - 12/31/2009 USD ($) USD ($) / shares $Duration_12_27_2008_To_12_31_20095http://www.sec.gov/CIK0001130385duration2008-12-27T00:00:002009-12-31T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit13Standardhttp://www.xbrl.org/2003/instancepurexbrli0Unit15Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$3falsefalseUSDfalsefalse12/29/2007 - 12/26/2008 USD ($) USD ($) / shares $Duration_12_29_2007_To_12_26_20082http://www.sec.gov/CIK0001130385duration2007-12-29T00:00:002008-12-26T00:00:00Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit15Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0Unit13Standardhttp://www.xbrl.org/2003/instancepurexbrli0Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2false0fwlt_IncomeLossBeforeIncomeTaxesfwltfalsecreditdurationSum of operating profit and nonoperating income (expense) before income taxes and including the portion attributable to...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse305240000305240falsetruefalsefalsefalse2truefalsefalse455120000455120falsetruefalsefalsefalse3truefalsefalse630897000630897falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetarySum of operating profit and nonoperating income (expense) before income taxes and including the portion attributable to noncontrolling interest.No authoritative reference available.falsefalseIncome/(loss) before income taxes3false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://fwc.com/role/disclosureincometaxescomponentsofincomelossbeforeincometaxesdetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalseUSDtruefalse{us-gaap_StatementGeographicalAxis} : United States [Member] 1/1/2010 - 12/31/2010 USD ($) $Duration_1_1_2010_To_12_31_201022http://www.sec.gov/CIK0001130385duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseUnited States [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldifwlt_UnitedStatesMemberus-gaap_StatementGeographicalAxisexplicitMemberUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit13Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$5falsefalseUSDtruefalse{us-gaap_StatementGeographicalAxis} : United States [Member] 12/27/2008 - 12/31/2009 USD ($) $Duration_12_27_2008_To_12_31_2009http://www.sec.gov/CIK0001130385duration2008-12-27T00:00:002009-12-31T00:00:00falsefalseUnited States [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldifwlt_UnitedStatesMemberus-gaap_StatementGeographicalAxisexplicitMemberUnit13Standardhttp://www.xbrl.org/2003/instancepurexbrli0Unit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$6falsefalseUSDtruefalse{us-gaap_StatementGeographicalAxis} : United States [Member] 12/29/2007 - 12/26/2008 USD ($) $Duration_12_29_2007_To_12_26_2008http://www.sec.gov/CIK0001130385duration2007-12-29T00:00:002008-12-26T00:00:00falsefalseUnited States [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldifwlt_UnitedStatesMemberus-gaap_StatementGeographicalAxisexplicitMemberUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit13Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseUnited States [Member]4false0fwlt_IncomeLossBeforeIncomeTaxesfwltfalsecreditdurationSum of operating profit and nonoperating income (expense) before income taxes and including the portion attributable to...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse-57982000-57982falsefalsefalsefalsefalse2truefalsefalse-724000-724falsefalsefalsefalsefalse3truefalsefalse2829000028290falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetarySum of operating profit and nonoperating income (expense) before income taxes and including the portion attributable to noncontrolling interest.No authoritative reference available.falsefalseIncome/(loss) before income taxes5false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://fwc.com/role/disclosureincometaxescomponentsofincomelossbeforeincometaxesdetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse7falsefalseUSDtruefalse{us-gaap_StatementGeographicalAxis} : Non-U.S. [Member] 1/1/2010 - 12/31/2010 USD ($) $Duration_1_1_2010_To_12_31_201032http://www.sec.gov/CIK0001130385duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseNon-U.S. [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldifwlt_NonUSMemberus-gaap_StatementGeographicalAxisexplicitMemberUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$8falsefalseUSDtruefalse{us-gaap_StatementGeographicalAxis} : Non-U.S. [Member] 12/27/2008 - 12/31/2009 USD ($) $Duration_12_27_2008_To_12_31_200933http://www.sec.gov/CIK0001130385duration2008-12-27T00:00:002009-12-31T00:00:00falsefalseNon-U.S. [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldifwlt_NonUSMemberus-gaap_StatementGeographicalAxisexplicitMemberUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$9falsefalseUSDtruefalse{us-gaap_StatementGeographicalAxis} : Non-U.S. [Member] 12/29/2007 - 12/26/2008 USD ($) $Duration_12_29_2007_To_12_26_200852http://www.sec.gov/CIK0001130385duration2007-12-29T00:00:002008-12-26T00:00:00falsefalseNon-U.S. [Member]us-gaap_StatementGeographicalAxisxbrldihttp://xbrl.org/2006/xbrldifwlt_NonUSMemberus-gaap_StatementGeographicalAxisexplicitMemberUnit12Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseNon-U.S. [Member]6false0fwlt_IncomeLossBeforeIncomeTaxesfwltfalsecreditdurationSum of operating profit and nonoperating income (expense) before income taxes and including the portion attributable to...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse363222000363222falsetruefalsefalsefalse2truefalsefalse455844000455844falsetruefalsefalsefalse3truefalsefalse602607000602607falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetarySum of operating profit and nonoperating income (expense) before income taxes and including the portion attributable to noncontrolling interest.No authoritative reference available.falsefalseIncome/(loss) before income taxes35Income Taxes (Components of income (loss) before income taxes) (Details) (USD $)ThousandsUnKnownUnKnownUnKnownfalsetrue