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Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.","units":{"USD":[{"end":"2010-12-31","val":49000000,"accn":"0001193125-11-047795","fy":2010,"fp":"FY","form":"10-K","filed":"2011-02-28","frame":"CY2010Q4I"},{"end":"2011-12-31","val":39000000,"accn":"0000062709-12-000016","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-28","frame":"CY2011Q4I"},{"end":"2012-12-31","val":42000000,"accn":"0000062709-13-000019","fy":2012,"fp":"FY","form":"8-K","filed":"2013-05-10","frame":"CY2012Q4I"},{"end":"2012-12-31","val":42000000,"accn":"0000062709-13-000004","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-27"}]}},"FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinOneYear":{"label":"Future Minimum Sublease Rentals, Sale Leaseback Transactions, Next Twelve Months","description":"Amount of minimum sublease rentals for sale-leaseback transactions accounted for using the deposit method or as a financing to be received by the seller-lessee in the next fiscal year following the latest fiscal year. 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