CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2017	Jul. 01, 2016	Jul. 03, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 553	$ 324	$ 334
Other comprehensive income (loss):
Foreign currency translation loss, net of income taxes	(34)	(69)	(69)
Net unrealized gain (loss) on hedging derivatives, net of income taxes	1	1	(19)
Amortization of gain on treasury lock, net of income taxes	0	0	2
Net unrecognized gain (loss) on postretirement obligations, net of income taxes	200	(411)	85
Other comprehensive income (loss), net of income taxes	167	(479)	(1)
Total comprehensive income (loss)	$ 720	$ (155)	$ 333