Business Segment, Revenue Information, Geographic Information and Concentration of Risk - Revenue by End Market and Form Factor (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Jul. 03, 2020	Apr. 03, 2020	Jan. 03, 2020	Oct. 04, 2019	Jun. 28, 2019	Mar. 29, 2019	Dec. 28, 2018	Sep. 28, 2018	Jul. 03, 2020	Jun. 28, 2019	Jun. 29, 2018
Revenue, Major Customer [Line Items]
Revenue, net	$ 4,287	$ 4,175	$ 4,234	$ 4,040	$ 3,634	$ 3,674	$ 4,233	$ 5,028	$ 16,736	$ 16,569	$ 20,647
Client Devices
Revenue, Major Customer [Line Items]
Revenue, net									7,160	8,095	10,108
Data Center Devices & Solutions
Revenue, Major Customer [Line Items]
Revenue, net									6,228	5,038	6,075
Client Solutions
Revenue, Major Customer [Line Items]
Revenue, net									3,348	3,436	4,464
HDD
Revenue, Major Customer [Line Items]
Revenue, net									8,967	8,746	10,698
Flash-based
Revenue, Major Customer [Line Items]
Revenue, net									$ 7,769	$ 7,823	$ 9,949