PENSION AND OTHER POSTRETIREMENT BENEFITS - Expected Amortization of Net Define Benefit Costs Included on AOCI During Next Fiscal Year (Details) $ in Millions	Jan. 03, 2020 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Net actuarial (gain) loss	$ 7
Prior service cost	(28)
Expected amortization in next fiscal year	(21)
Pension
Defined Benefit Plan Disclosure [Line Items]
Net actuarial (gain) loss	10
Prior service cost	(28)
Expected amortization in next fiscal year	(18)
Other Benefits
Defined Benefit Plan Disclosure [Line Items]
Net actuarial (gain) loss	(3)
Prior service cost	0
Expected amortization in next fiscal year	$ (3)