RETIREMENT BENEFITS - Reconciliation of Defined Benefit Plan Asset Balances (Details) - USD ($) $ in Millions	Dec. 29, 2023	Dec. 30, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 8,860	$ 7,653	$ 9,924
Total investments measured at NAV
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	3,328	3,324
Total | Total
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	5,495	4,355
Total | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2,668	2,495
Total | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2,640	1,737
Total | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	187	123
Domestic equities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,294	1,275
Domestic equities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,294	1,275
Domestic equities | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Domestic equities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
International equities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,138	1,044
International equities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,138	1,002
International equities | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	42
International equities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Real estate investment trusts
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	214	192
Real estate investment trusts | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	214	192
Real estate investment trusts | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Real estate investment trusts | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,457	1,118
Corporate bonds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Corporate bonds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,331	995
Corporate bonds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	126	123
Government securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	485	320
Government securities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Government securities | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	485	320
Government securities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Securitized assets
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	164	166
Securitized assets | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Securitized assets | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	164	166
Securitized assets | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fixed income funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	137	92
Fixed income funds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	4	4
Fixed income funds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	133	88
Fixed income funds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	545	148
Cash and cash equivalents | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	18	22
Cash and cash equivalents | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	527	126
Cash and cash equivalents | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Other
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	61
Other | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0
Other | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0
Other | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	61
Equity funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 1,529	$ 1,661
Investments measured at NAV:	Total investments measured at NAV	Total investments measured at NAV
Fixed income funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 3	$ 299
Investments measured at NAV:	Total investments measured at NAV	Total investments measured at NAV
Hedge funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 396	$ 294
Investments measured at NAV:	Total investments measured at NAV	Total investments measured at NAV
Private equity funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 1,019	$ 696
Investments measured at NAV:	Total investments measured at NAV	Total investments measured at NAV
Real estate funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 379	$ 372
Investments measured at NAV:	Total investments measured at NAV	Total investments measured at NAV
Other
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 2	$ 2
Investments measured at NAV:	Total investments measured at NAV	Total investments measured at NAV
Receivables (Payables), net
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 37	$ (26)