STOCK OPTIONS AND OTHER SHARE-BASED COMPENSATION - Share-based Compensation Expense (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jan. 03, 2020	Jun. 28, 2019	Jun. 29, 2018	Jun. 30, 2017
Share-based Payment Arrangement, Noncash Expense [Abstract]
Total expense	$ 125	$ 58	$ 51	$ 42
Included In:
Income from continuing operations	125	58	51	42
Tax effect on share-based compensation expense	(31)	(14)	(16)	(16)
Total share-based compensation expense after-tax	94	44	35	26
Cost of product sales and services
Share-based Payment Arrangement, Noncash Expense [Abstract]
Total expense	5	12	8	3
Included In:
Income from continuing operations	5	12	8	3
Engineering, selling and administrative expenses
Share-based Payment Arrangement, Noncash Expense [Abstract]
Total expense	120	46	43	39
Included In:
Income from continuing operations	$ 120	$ 46	$ 43	$ 39