PENSION AND OTHER POSTRETIREMENT BENEFITS - Income Statement Information (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 28, 2019	Jun. 29, 2018	Jun. 30, 2017
Net periodic benefit income(1)
Service cost	$ 36	$ 40
Interest cost	217	202
Discontinued operations, net of income taxes
Net periodic benefit income(1)
Net periodic benefit income			$ 2
Pension
Net periodic benefit income(1)
Service cost	36	39	58
Interest cost	209	195	184
Expected return on plan assets	(382)	(369)	(340)
Amortization of net actuarial loss (gain)	0	0	1
Effect of curtailments or settlements	1	0	0
Net periodic benefit income	(136)	(135)	(97)
Other changes in plan assets and benefit obligations recognized in other comprehensive loss
Net actuarial loss (gain)	626	(106)	(284)
Curtailment loss recognized	(1)	0	0
Prior service cost	3	2	0
Recognized prior service (cost) credit	0	0	0
Amortization of prior service cost	0	0	(1)
Amortization of prior service cost	(1)	0	0
Total change recognized in other comprehensive loss	627	(104)	(285)
Total impact from net periodic benefit cost and changes in other comprehensive loss	491	(239)	(382)
Other Benefits
Net periodic benefit income(1)
Service cost	0	1	1
Interest cost	8	7	8
Expected return on plan assets	(16)	(16)	(17)
Amortization of net actuarial loss (gain)	(6)	(1)	0
Effect of curtailments or settlements	0	0	0
Net periodic benefit income	(14)	(9)	(8)
Other changes in plan assets and benefit obligations recognized in other comprehensive loss
Net actuarial loss (gain)	4	(20)	(38)
Curtailment loss recognized	0	0	0
Prior service cost	0	0	0
Recognized prior service (cost) credit	0	0	0
Amortization of prior service cost	6	1	0
Amortization of prior service cost	0	0	0
Total change recognized in other comprehensive loss	10	(19)	(38)
Total impact from net periodic benefit cost and changes in other comprehensive loss	$ (4)	$ (28)	$ (46)