CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Jun. 28, 2019	Jun. 29, 2018	Jun. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 949	$ 699	$ 543
Other comprehensive income (loss):
Foreign currency translation gain (loss), net of income taxes	(7)	15	(34)
Net unrealized gain (loss) on hedging derivatives, net of income taxes	(18)	1	1
Net unrecognized gain (loss) on postretirement obligations, net of income taxes	(480)	93	200
Other comprehensive income (loss), net of income taxes	(505)	109	167
Total comprehensive income	$ 444	$ 808	$ 710