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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$2false0fwlt_AsbestosRelatedPendingClaimsNumberfwltfalsenainstantThe total number of open claims as of the balance sheet date.falsefalsefalsefalsefalsefalsefalsetruefalsefalseperiodstartlabel1truefalsefalse125100125100falsefalsefalsefalsefalse2truefalsefalse130760130760falsefalsefalsefalsefalse3truefalsefalse131340131340falsefalsefalsefalsefalseOtherxbrli:integerItemTypeintegerThe total number of open claims as of the balance sheet date.No authoritative reference available.falsefalseOpen claims at beginning of year3false0fwlt_AsbestosRelatedNewClaimsFiledNumberfwltfalsenadurationThe total number of new claims filed during the period.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse60806080falsefalsefalsefalsefalse2truefalsefalse44104410falsefalsefalsefalsefalse3truefalsefalse49504950falsefalsefalsefalsefalseOtherxbrli:integerItemTypeintegerThe total number of new claims filed during the period.No authoritative reference available.falsefalseNew claims4false0fwlt_AsbestosRelatedClaimsSettledAndDismissedNumberfwltfalsenadurationThe number of asbestos-related claims settled and dismissed during the period.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse-6760-6760falsefalsefalsefalsefalse2truefalsefalse-10070-10070falsefalsefalsefalsefalse3truefalsefalse-5530-5530falsefalsefalsefalsefalseOtherxbrli:integerItemTypeintegerThe number of asbestos-related claims settled and dismissed during the period.No authoritative reference available.falsefalseClaims resolved5false0fwlt_AsbestosRelatedPendingClaimsNumberfwltfalsenainstantThe total number of open claims as of the balance sheet date.falsefalsefalsefalsefalsefalsefalsefalsetruefalseperiodendlabel1truefalsefalse124420124420falsefalsefalsefalsefalse2truefalsefalse125100125100falsefalsefalsefalsefalse3truefalsefalse130760130760falsefalsefalsefalsefalseOtherxbrli:integerItemTypeintegerThe total number of open claims as of the balance sheet date.No authoritative reference available.falsefalseOpen claims at end of year6false0fwlt_AsbestosRelatedPendingClaimsNotValuedInLiabilityfwltfalsenainstantThe number of pending asbestos claims not valued in the asbestos liability as of the balance sheet date.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truefalsefalse-97440-97440[1]falsefalsefalsefalsefalse2truefalsefalse-94740-94740[1]falsefalsefalsefalsefalse3truefalsefalse-84830-84830[1]falsefalsefalsefalsefalseOtherxbrli:integerItemTypeintegerThe number of pending asbestos claims not valued in the asbestos liability as of the balance sheet date.No authoritative reference available.falsefalseClaims not valued in the liability7false0fwlt_AsbestosRelatedPendingClaimsNumberValuedInLiabilityfwltfalsenainstantThe total number of open asbestos claims as of the balance sheet date that are valued in the asbestos liability.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsetotallabel1truefalsefalse2698026980falsefalsefalsefalsefalse2truefalsefalse3036030360falsefalsefalsefalsefalse3truefalsefalse4593045930falsefalsefalsefalsefalseOtherxbrli:integerItemTypeintegerThe total number of open asbestos claims as of the balance sheet date that are valued in the asbestos liability.No authoritative reference available.truefalseOpen claims valued in the liability at end of year1Claims not valued in the liability include claims on certain inactive court dockets, claims over six years old that are considered abandoned and certain other items.36Litigation and Uncertainties (Summary of claim acitivity - 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