Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	12 Months Ended
	Jul. 03, 2020	Jun. 28, 2019	Jun. 29, 2018
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (250)	$ (754)	$ 675
Other comprehensive income (loss), before tax:
Actuarial pension loss	(1)	(39)	(2)
Foreign currency translation adjustment	(7)	28	18
Net unrealized gain (loss) on derivative contracts and available-for-sale securities	(93)	(39)	7
Total other comprehensive income (loss), before tax	(101)	(50)	23
Income tax benefit (expense) related to items of other comprehensive income (loss), before tax	12	21	(4)
Other comprehensive income (loss), net of tax	(89)	(29)	19
Total comprehensive income (loss)	$ (339)	$ (783)	$ 694