2.2.0.25falsefalse009040 - Disclosure - Future Costs Related to Closed Locations (Details)truefalseIn Millionsfalse1falsefalseUSDfalsefalse12/1/2010 - 2/28/2011 USD ($) USD ($) / shares $c00091http://www.sec.gov/CIK0000104207duration2010-12-01T00:00:002011-02-28T00:00:00u000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170u001Standardhttp://www.xbrl.org/2003/instancesharesxbrli0u002Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0u003Standardhttp://www.xbrl.org/2003/instancepurexbrli0USDUSD$2falsefalseUSDfalsefalse12/1/2009 - 2/28/2010 USD ($) USD ($) / shares $c00105http://www.sec.gov/CIK0000104207duration2009-12-01T00:00:002010-02-28T00:00:00u000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170u002Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0u001Standardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$3falsefalseUSDfalsefalse9/1/2010 - 2/28/2011 USD ($) USD ($) / shares $c00053http://www.sec.gov/CIK0000104207duration2010-09-01T00:00:002011-02-28T00:00:00u000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170u003Standardhttp://www.xbrl.org/2003/instancepurexbrli0u001Standardhttp://www.xbrl.org/2003/instancesharesxbrli0u002Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$4falsefalseUSDfalsefalse9/1/2009 - 2/28/2010 USD ($) USD ($) / shares $c00077http://www.sec.gov/CIK0000104207duration2009-09-01T00:00:002010-02-28T00:00:00u000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170u002Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0u001Standardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$5falsefalseUSDfalsefalse9/1/2009 - 8/31/2010 USD ($) $c00045http://www.sec.gov/CIK0000104207duration2009-09-01T00:00:002010-08-31T00:00:00u000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170u001Standardhttp://www.xbrl.org/2003/instancesharesxbrli0u002Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2true0wag_NotesToFinancialStatementsAbstractwagfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseNotes to Financial Statements [Abstract]3false0wag_FacilitiesClosedOrRelocatedUnderLongTermLeasesExpensewagfalsedebitdurationRecorded charges during the period relating to facilities that were closed or relocated under long-term leases.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1truefalsefalse2500000025falsetruefalsefalsefalse2truefalsefalse20000002falsetruefalsefalsefalse3truefalsefalse3700000037falsetruefalsefalsefalse4truefalsefalse2400000024falsetruefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryRecorded charges during the period relating to facilities that were closed or relocated under long-term leases.No authoritative reference available.falsefalseCharges recorded during the period for facilities that were closed or relocated under long-term leases4true0wag_ChangesInReserveForFacilityClosingsAndRelatedLeaseTerminationChargesRollforwardwagfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseChanges in reserve for facility closings and related lease termination charges [Rollforward]5false0wag_FacilityClosingsAndRelatedLeaseTerminationChargesReservewagfalsecreditinstantLiability as of the balance sheet date for facility closings and related lease termination charges. This liability is based...falsefalsefalsefalsefalsefalsefalsetruefalsefalseperiodstartlabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3truefalsefalse151000000151falsefalsefalsefalsefalse4truefalsefalse9900000099falsefalsefalsefalsefalse5truefalsefalse9900000099falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryLiability as of the balance sheet date for facility closings and related lease termination charges. This liability is based on the present value of future rent obligations and other related costs (net of estimated sublease rent) to the first lease option date.No authoritative reference available.falsefalseFacility closings and related lease termination charges balance - beginning of period6false0wag_ProvisionForPresentValueOfNonCancellableLeasePaymentsClosedFacilitieswagfalsecreditdurationReserve increase representing the amount charged against earnings in the period for the present value of non-cancellable...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3truefalsefalse3100000031falsefalsefalsefalsefalse4truefalsefalse1900000019falsefalsefalsefalsefalse5truefalsefalse7700000077falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryReserve increase representing the amount charged against earnings in the period for the present value of non-cancellable lease payments of closed facilities.No authoritative reference available.falsefalseProvision for present value of non-cancellable lease payments of closed facilities7false0wag_FacilityClosingsAndRelatedLeaseTerminationChargesReserveAssumptionAdjustmentswagfalsecreditdurationAmount of any reversal and other adjustment made during the period to the amount of a previously accrued liability for...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3truefalsefalse-4000000-4falsefalsefalsefalsefalse4truefalsefalse-7000000-7falsefalsefalsefalsefalse5truefalsefalse-9000000-9falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAmount of any reversal and other adjustment made during the period to the amount of a previously accrued liability for facility closings and related lease termination charges for assumptions about future sublease income, terminations and changes in interest rates.No authoritative reference available.falsefalseAssumptions about future sublease income, terminations, and changes in interest rates8false0us-gaap_AccretionExpenseus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3truefalsefalse1000000010falsefalsefalsefalsefalse4truefalsefalse1200000012falsefalsefalsefalsefalse5truefalsefalse2200000022falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAmount recognized for the passage of time, typically for liabilities, that have been discounted to their net present values. Excludes accretion associated with asset retirement obligations.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 143 -Paragraph 14 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 146 -Paragraph 6 falsefalseInterest accretion9false0wag_FacilityClosingsAndRelatedLeaseTerminationChargesReserveSettledWithCashNetISubleaseIncomewagfalsecreditdurationAmount of cash paid in the period to fully or partially settle a specified, previously accrued type of facility closing or...falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3truefalsefalse-32000000-32falsefalsefalsefalsefalse4truefalsefalse-21000000-21falsefalsefalsefalsefalse5truefalsefalse-45000000-45falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryAmount of cash paid in the period to fully or partially settle a specified, previously accrued type of facility closing or related lease termination cost, net of sublease income.No authoritative reference available.falsefalseCash payments, net of sublease income10false0wag_FacilityClosingAndRelatedLeaseTerminationChargesReserveReserveAquiredThroughAcquisitionwagfalsecreditdurationThis element represents liabilities acquired through acquisition not affecting any income statement charges.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseterselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3truefalsefalse00falsefalsefalsefalsefalse4truefalsefalse00falsefalsefalsefalsefalse5truefalsefalse70000007falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryThis element represents liabilities acquired through acquisition not affecting any income statement charges.No authoritative reference available.falsefalseReserve acquired through acquisition11false0wag_FacilityClosingsAndRelatedLeaseTerminationChargesReservewagfalsecreditinstantLiability as of the balance sheet date for facility closings and related lease termination charges. This liability is based...falsefalsefalsefalsefalsefalsefalsefalsetruefalseperiodendlabel1truefalsefalse156000000156falsetruefalsefalsefalse2truefalsefalse102000000102falsetruefalsefalsefalse3truefalsefalse156000000156falsetruefalsefalsefalse4truefalsefalse102000000102falsetruefalsefalsefalse5truefalsefalse151000000151falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryLiability as of the balance sheet date for facility closings and related lease termination charges. This liability is based on the present value of future rent obligations and other related costs (net of estimated sublease rent) to the first lease option date.No authoritative reference available.falsefalseFacility closings and related lease termination charges balance - end of period510Future Costs Related to Closed Locations (Details) (USD $)MillionsUnKnownUnKnownUnKnownfalsetrue