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Balance Sheet Information (Property, Equipment and Leasehold Improvements, net) (Details) - USD ($)
$ in Millions
Apr. 02, 2021
Jul. 03, 2020
Property, Plant and Equipment, Net [Abstract]    
Property, equipment and leasehold improvements $ 10,384 $ 10,212
Accumulated depreciation and amortization (8,169) (8,083)
Property, equipment and leasehold improvements, net $ 2,215 $ 2,129