PENSION AND OTHER POSTRETIREMENT BENEFITS - Additional Information (Details) - USD ($)	6 Months Ended	12 Months Ended
	Jan. 03, 2020	Jan. 03, 2021	Jun. 28, 2019	Jun. 29, 2018	Jun. 30, 2017	Dec. 31, 2030	Dec. 31, 2016
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Matching contributions charged to expense	$ 105,000,000		$ 85,000,000	$ 83,000,000	$ 80,000,000
Fair value of plan assets	8,892,000,000		5,159,000,000	5,305,000,000
Accumulated benefit obligation for all defined benefit pension plans	$ 10,200,000,000
Per capita cost of healthcare assumed for next fiscal year, post-age 65	6.80%
U.S.
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	$ 4,500,000,000
Projected benefit obligation	$ 5,600,000,000
Cash balance benefit percentage							1.00%
Percentage of total projected benefit obligation (percent)	54.00%
Discount rate	3.10%
Expected return on plan assets	7.75%
Pension
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	$ 8,618,000,000		4,958,000,000	5,098,000,000	4,921,000,000
Projected benefit obligation	$ 10,268,000,000		$ 6,123,000,000	$ 5,774,000,000	$ 6,140,000,000
Discount rate	3.14%		3.35%	4.05%
Expected return on plan assets	7.68%		7.66%	7.66%	7.65%
Employer contributions	$ 406,000,000		$ 3,000,000	$ 303,000,000
Pension | U.S.
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Employer contributions	$ 302,000,000		300,000,000	400,000,000
Minimum
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Percentage match of the employee contribution	2.00%
Maximum
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Percentage match of the employee contribution	6.00%
Forecast
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Ultimate per capita cost of healthcare assumed (percent)						4.70%
Forecast | U.S.
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Expected return on plan assets		7.75%
Forecast | Pension
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Expected return on plan assets		7.68%
Private equity funds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plans, future unfunded commitments on NAV equity funds investments	$ 325,000,000		355,000,000	246,000,000
Hedge funds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plans, future unfunded commitments on NAV equity funds investments	$ 0		$ 0	$ 0
Minimum redemption notice period permitted on NAV equity funds investments	90 days