PENSION AND OTHER POSTRETIREMENT BENEFITS - Pre-tax Amounts Recorded in Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	Jan. 03, 2020	Jun. 28, 2019	Jun. 29, 2018
Pension
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss (gain)	$ 819	$ 781	$ 156
Net prior service cost (credit)	(282)	6	4
Defined benefit plan, accumulated comprehensive income (loss)	537	787	160
Other Benefits
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss (gain)	(34)	(36)	(46)
Net prior service cost (credit)	(1)	(1)	(1)
Defined benefit plan, accumulated comprehensive income (loss)	$ (35)	$ (37)	$ (47)

Amount, before tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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Amount, before tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit.

+ References

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-Publisher FASB
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Amount, before tax, of accumulated other comprehensive (income) loss for cost (credit) of benefit change attributable to participants' prior service from plan amendment or plan initiation of defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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