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Impairment and Other Charges, Net (Impairment and Disposal Costs Included in Impairment and Other Charges) (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 27, 2020
Sep. 29, 2019
Sep. 30, 2018
Restructuring Cost and Reserve [Line Items]      
Restructuring costs $ 1,168 $ 8,455 $ 10,647
Costs of closed restaurants and other 1,872 8,628 4,803
(Gains) losses on disposition of property and equipment, net (1) (9,768) (6,244) 1,627
Accelerated depreciation 235 1,616 1,130
Operating restaurant impairment charges 0 0 211
Impairment and other charges, net (6,493) 12,455 $ 18,418
Continuing Operations      
Restructuring Cost and Reserve [Line Items]      
Gain on sale of properties $ 10,800 $ 5,700