RETIREMENT BENEFITS - Pre-tax Amounts Recorded in Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	Dec. 29, 2023	Dec. 30, 2022
Defined Benefit Plan Disclosure [Line Items]
Actuarial loss (gain)	$ 64	$ 143
Net prior service (credit) cost	(153)	(178)
Total PBO not yet recognized as expense	(89)	(35)
Pension
Defined Benefit Plan Disclosure [Line Items]
Actuarial loss (gain)	162	243
Net prior service (credit) cost	(157)	(183)
Total PBO not yet recognized as expense	5	60
Other Benefits
Defined Benefit Plan Disclosure [Line Items]
Actuarial loss (gain)	(98)	(100)
Net prior service (credit) cost	4	5
Total PBO not yet recognized as expense	$ (94)	$ (95)

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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14A
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482790/220-10-45-14A

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 10A
-Subparagraph (i-k)
-SubTopic 10
-Topic 220
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482790/220-10-45-10A

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (j)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480506/715-20-50-1

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