PENSION AND OTHER POSTRETIREMENT BENEFITS - Balance Sheet Information (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 28, 2019	Jun. 29, 2018	Jun. 30, 2017
Change in benefit obligation
Benefit obligation at beginning of fiscal year	$ 6,007	$ 6,405
Service cost	36	40
Interest cost	217	202
Actuarial loss (gain)	513	(191)
Amendments	3	2
Benefits paid	(400)	(420)
Expenses paid	(30)	(35)
Curtailments	1	0
Foreign exchange	(3)	4
Benefit obligation at end of fiscal year	6,344	6,007	$ 6,405
Change in plan assets
Plan assets at beginning of fiscal year	5,305	5,133
Actual return on plan assets	282	321
Employer contributions	5	302
Benefits paid	(400)	(420)
Expenses paid	(30)	(35)
Foreign exchange	(3)	4
Plan assets at end of fiscal year	5,159	5,305	5,133
Funded status at end of fiscal year	(1,185)	(702)
Defined benefit plan with accumulated benefit obligation in excess of plan assets
Projected benefit obligation	6,041	5,694
Accumulated benefit obligation	6,041	5,694
Fair value of plan assets	4,864	5,004
Pension
Change in benefit obligation
Benefit obligation at beginning of fiscal year	5,774	6,140
Service cost	36	39	58
Interest cost	209	195	184
Actuarial loss (gain)	514	(169)
Amendments	3	2
Benefits paid	(381)	(402)
Expenses paid	(30)	(35)
Curtailments	1	0
Foreign exchange	(3)	4
Benefit obligation at end of fiscal year	6,123	5,774	6,140
Change in plan assets
Plan assets at beginning of fiscal year	5,098	4,921
Actual return on plan assets	271	307
Employer contributions	3	303
Benefits paid	(381)	(402)
Expenses paid	(30)	(35)
Foreign exchange	(3)	4
Plan assets at end of fiscal year	4,958	5,098	4,921
Funded status at end of fiscal year	(1,165)	(676)
Other Benefits
Change in benefit obligation
Benefit obligation at beginning of fiscal year	233	265
Service cost	0	1	1
Interest cost	8	7	8
Actuarial loss (gain)	(1)	(22)
Amendments	0	0
Benefits paid	(19)	(18)
Expenses paid	0	0
Curtailments	0	0
Foreign exchange	0	0
Benefit obligation at end of fiscal year	221	233	265
Change in plan assets
Plan assets at beginning of fiscal year	207	212
Actual return on plan assets	11	14
Employer contributions	2	(1)
Benefits paid	(19)	(18)
Expenses paid	0	0
Foreign exchange	0	0
Plan assets at end of fiscal year	201	207	$ 212
Funded status at end of fiscal year	$ (20)	$ (26)