RESTRUCTURING AND OTHER EXIT COSTS - Summary of Restructuring and Other Exit Activities (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jan. 03, 2020	Jun. 28, 2019	Jun. 29, 2018
Restructuring Reserve [Roll Forward]
Balance at the beginning of the period	$ 16	$ 45	$ 43
Additional provisions	117		51
Payments	(63)	(29)	(47)
Other	(5)		(2)
Balance at the end of the period	65	16	45
Employee severance-related costs
Restructuring Reserve [Roll Forward]
Balance at the beginning of the period	0	2	12
Additional provisions	117		1
Payments	(62)	(2)	(9)
Other	3		(2)
Balance at the end of the period	58	0	2
Facilities consolidation and other exit costs
Restructuring Reserve [Roll Forward]
Balance at the beginning of the period	16	43	31
Additional provisions	0		50
Payments	(1)	(27)	(38)
Other	(8)		0
Balance at the end of the period	$ 7	$ 16	$ 43