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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":"2015-12-27","val":1890000,"accn":"0001193125-16-501579","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-11","frame":"CY2015Q4I"},{"end":"2016-12-25","val":681000,"accn":"0001193125-17-073323","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-07","frame":"CY2016Q4I"},{"end":"2017-12-31","val":1472000,"accn":"0001193125-18-073807","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-08","frame":"CY2017Q4I"}]}},"FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFiveYears":{"label":"Future Minimum Sublease Rentals, Sale Leaseback Transactions, within Five Years","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 fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.","units":{"USD":[{"end":"2015-12-27","val":794000,"accn":"0001193125-16-501579","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-11","frame":"CY2015Q4I"},{"end":"2016-12-25","val":375000,"accn":"0001193125-17-073323","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-07","frame":"CY2016Q4I"},{"end":"2017-12-31","val":363000,"accn":"0001193125-18-073807","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-08","frame":"CY2017Q4I"}]}},"FutureMinimumSubleaseRentalsSaleLeasebackTransactionsWithinFourYears":{"label":"Future Minimum Sublease Rentals, Sale Leaseback Transactions, within Four Years","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 fourth fiscal year following the latest fiscal year. 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This item includes treasury stock repurchased by the entity. 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