PENSION AND OTHER POSTRETIREMENT BENEFITS - Income Statement Information (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2017	Jul. 01, 2016	Jul. 03, 2015
Net periodic benefit income(1)
Service cost	$ 59	$ 76
Interest cost	192	258
Discontinued operations, net of income taxes
Net periodic benefit income(1)
Total net periodic benefit income	2	4
Pension
Net periodic benefit income(1)
Service cost	58	75	$ 7
Interest cost	184	245	23
Expected return on plan assets	(340)	(347)	(32)
Amortization of prior service credit	0	0	0
Amortization of net actuarial loss	1	1	1
Net periodic benefit income	(97)	(26)	(1)
Effect of curtailments, settlements or special termination benefits	0	1	0
Total net periodic benefit income	(97)	(25)	(1)
Other changes in plan assets and benefit obligations recognized in other comprehensive loss (income)
Net actuarial loss (gain)	(284)	645	(117)
Prior service cost (credit)	0	3	0
Amortization of prior service credit	0	0	0
Amortization of net actuarial loss	(1)	(1)	(1)
Total change recognized in other comprehensive loss (income)	(285)	647	(118)
Total impact from net periodic benefit cost and changes in other comprehensive loss (income)	(382)	622	(119)
Other Benefits
Net periodic benefit income(1)
Service cost	1	1	1
Interest cost	8	13	2
Expected return on plan assets	(17)	(18)	(2)
Amortization of prior service credit	0	(5)	(13)
Amortization of net actuarial loss	0	1	6
Net periodic benefit income	(8)	(8)	(6)
Effect of curtailments, settlements or special termination benefits	0	(121)	0
Total net periodic benefit income	(8)	(129)	(6)
Other changes in plan assets and benefit obligations recognized in other comprehensive loss (income)
Net actuarial loss (gain)	(38)	15	(5)
Prior service cost (credit)	0	(121)	(19)
Amortization of prior service credit	0	126	13
Amortization of net actuarial loss	0	(2)	(6)
Total change recognized in other comprehensive loss (income)	(38)	18	(17)
Total impact from net periodic benefit cost and changes in other comprehensive loss (income)	$ (46)	$ (111)	$ (23)