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Leases Additional Detail (Details) - USD ($)
$ in Millions
4 Months Ended 6 Months Ended
Jun. 16, 2018
Sep. 08, 2018
Impaired Long-Lived Assets Held and Used [Line Items]    
Aggregate Proceeds Sale leaseback $ 382  
Properties for sale leaseback eight  
Deferred gain $ 91  
Wholesale    
Impaired Long-Lived Assets Held and Used [Line Items]    
Asset Impairment Charges   $ 2