CONDENSED CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 28, 2018	Dec. 29, 2017	Dec. 28, 2018	Dec. 29, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 225	$ 131	$ 438	$ 290
Other comprehensive income (loss):
Foreign currency translation gain (loss), net of income taxes	(8)	(4)	(8)	21
Net unrealized gain on hedging derivatives, net of income taxes	0	0	1	1
Net unrecognized loss on postretirement obligations, net of income taxes	(1)	0	(2)	0
Other comprehensive income (loss), net of income taxes	(9)	(4)	(9)	22
Total comprehensive income	$ 216	$ 127	$ 429	$ 312