PENSION AND OTHER POSTRETIREMENT BENEFITS - Roll-forward of Projected Benefit Obligations (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Jan. 01, 2016	Oct. 02, 2015	Jun. 30, 2017	Jul. 01, 2016	Jul. 03, 2015
Change in benefit obligation
Benefit obligation at beginning of fiscal year		$ 6,938	$ 6,782	$ 6,938
Service cost			59	76
Interest cost			192	258
Actuarial loss (gain)			(192)	301
Prior service cost (credit)			0	(118)
Benefits paid			(398)	(382)
Settlements		(244)	0	(244)
Special termination benefits			0	1
Expenses paid			(34)	(30)
Curtailments			(1)	(3)
Foreign exchange			(3)	(15)
Benefit obligation at end of fiscal year			6,405	6,782	$ 6,938
Change in plan assets
Plan assets at beginning of fiscal year		4,757	4,489	4,757
Actual return on plan assets			492	0
Employer contributions			587	421
Benefits paid			(398)	(383)
Settlements			0	(244)
Expenses paid			(34)	(30)
Foreign exchange loss			(3)	(16)
Other			0	(16)
Plan assets at end of fiscal year			5,133	4,489	4,757
Funded status at end of fiscal year			(1,272)	(2,293)
Defined Benefit Plan, Pension Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Abstract]
Projected benefit obligation			6,061	6,390
Accumulated benefit obligation			6,061	6,379
Fair value of plan assets			4,833	4,187
Pension
Change in benefit obligation
Benefit obligation at beginning of fiscal year		6,493	6,471	6,493
Service cost			58	75	7
Interest cost			184	245	23
Actuarial loss (gain)			(160)	303
Prior service cost (credit)			0	3
Benefits paid			(376)	(358)
Settlements			0	(244)
Special termination benefits			0	1
Expenses paid			(34)	(30)
Curtailments	$ (2)		0	(2)
Foreign exchange			(3)	(15)
Benefit obligation at end of fiscal year			6,140	6,471	6,493
Change in plan assets
Plan assets at beginning of fiscal year		4,500	4,273	4,500
Actual return on plan assets			470	1
Employer contributions			591	420
Benefits paid			(376)	(358)
Settlements			0	(244)
Expenses paid			(34)	(30)
Foreign exchange loss			(3)	(16)
Other			0	0
Plan assets at end of fiscal year			4,921	4,273	4,500
Funded status at end of fiscal year			(1,219)	(2,198)
Other Benefits
Change in benefit obligation
Benefit obligation at beginning of fiscal year		445	311	445
Service cost			1	1	1
Interest cost			8	13	2
Actuarial loss (gain)			(32)	(2)
Prior service cost (credit)			0	(121)
Benefits paid			(22)	(24)
Settlements			0	0
Special termination benefits			0	0
Expenses paid			0	0
Curtailments			(1)	(1)
Foreign exchange			0	0
Benefit obligation at end of fiscal year			265	311	445
Change in plan assets
Plan assets at beginning of fiscal year		$ 257	216	257
Actual return on plan assets			22	(1)
Employer contributions			(4)	1
Benefits paid			(22)	(25)
Settlements			0	0
Expenses paid			0	0
Foreign exchange loss			0	0
Other			0	(16)
Plan assets at end of fiscal year			212	216	$ 257
Funded status at end of fiscal year			$ (53)	$ (95)