Segment Information - Goodwill Rollforward (Details) $ in Millions	6 Months Ended
	Dec. 31, 2021 USD ($)
Goodwill [Roll Forward]
Balance at July 3, 2021	$ 10,066
Foreign currency translation adjustment	(1)
Balance at December 31, 2021	10,065
HDD
Goodwill [Roll Forward]
Balance at July 3, 2021	4,328
Foreign currency translation adjustment	0
Balance at December 31, 2021	4,328
Flash
Goodwill [Roll Forward]
Balance at July 3, 2021	5,738
Foreign currency translation adjustment	(1)
Balance at December 31, 2021	$ 5,737