2.2.0.25falsefalse41101 - Disclosure - Share-Based Compensation Plans (Narrative) (Details)truefalseIn Thousands, except Share datafalse1falsefalseUSDfalsefalse1/1/2010 - 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$4falsefalsefalsefalse5/9/2006 As_Of_5_9_2006http://www.sec.gov/CIK0001130385instant2006-05-09T00:00:000001-01-01T00:00:00Unit1Standardhttp://www.xbrl.org/2003/instancesharesxbrli05false0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorizedus-gaaptruenainstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4truefalsefalse95600009560000falsefalsefalsefalsefalseSharesxbrli:sharesItemTypesharesThe maximum number of shares originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the share-based compensation plan. As stock options and equity instruments other than options are awarded to participants, the shares remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph a falsefalseMaximum number of shares as to which stock options and restricted stock awards that may be granted under the Omnibus Incentive Plan6false0fwlt_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumNumberOfSharesToBeIssuedUnderPlanfwltfalsenainstantThe maximum number of shares originally approved (usually by shareholders and board of directors), plus any additional shares...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4truefalsefalse1000000010000000falsefalsefalsefalsefalseSharesxbrli:sharesItemTypesharesThe maximum number of shares originally approved (usually by shareholders and board of directors), plus any additional shares that become available pursuant to the terms of the awards previously granted under the prior compensation plans and oustanding as of the date of the plan and only if those awards expire, terminate or are otherwise forfeited before being exercised or settled in full.No authoritative reference available.falsefalseMaximum number of shares as to which stock options and restricted stock awards that may be granted under the Omnibus Incentive Plan plus shares that become available for issuance from prior compensation plans7false0fwlt_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorizedAsConditionalCapitalfwltfalsenainstantThe number of registered shares authorized as conditional capital for the issuance of registered shares under share-based...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse6320795763207957falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalseSharesxbrli:sharesItemTypesharesThe number of registered shares authorized as conditional capital for the issuance of registered shares under share-based compensation plans, outstanding share purchase warrants and other convertible securities that may be issued in the future.No authoritative reference available.falsefalseNumber of registered shares our articles of association provide for conditional capital for the issuance of registered shares under our share-based compensation plans, share purchase warrants and other convertible securities we may issue in the future8false0fwlt_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfRemainingSharesAvailableAsConditionalCapitalfwltfalsenainstantThe number of remaining available conditional capital registered shares available at the balance sheet date.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse6067524960675249falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalseSharesxbrli:sharesItemTypesharesThe number of remaining available conditional capital registered shares available at the balance sheet date.No authoritative reference available.falsefalseRemaining available conditional capital as of balance sheet date9false0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValueus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse1026800010268falsetruefalsefalsefalse2truefalsefalse483000483falsetruefalsefalsefalse3truefalsefalse73200007320falsetruefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options which were exercised (or share units converted) into shares during the reporting period under the plan.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph c(2) falsefalseTotal intrinsic value of options exercised during fiscal year10false0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValueus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse1012900010129falsetruefalsefalsefalse2truefalsefalse1604300016043falsetruefalsefalsefalse3truefalsefalse89460008946falsetruefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThe total fair value of share-based awards for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares, other instruments, or cash in accordance with the terms of the arrangement.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph c(2) falsefalseTotal fair value of restricted awards vested during the period46Share-Based Compensation Plans (Narrative) (Details) (USD $)ThousandsNoRoundingUnKnownUnKnownfalsetrue