RETIREMENT BENEFITS - Schedule Of Fair Value Of Deferred Compensation Plan (Details) - Estimate of Fair Value Measurement - USD ($) $ in Millions	Oct. 02, 2026	Jan. 02, 2026
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of deferred compensation plan assets	$ 319	$ 293
Fair value of deferred compensation plan liabilities	473	446
Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of deferred compensation plan liabilities	12	15
Equity securities \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of deferred compensation plan liabilities	12	15
CCTs and GICs, measured at NAV \| Investments Measured at NAV
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of deferred compensation plan liabilities	461	431
Equity and fixed income securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of deferred compensation plan assets	279	255
Equity and fixed income securities \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of deferred compensation plan assets	279	255
COLI, measured at NAV \| Investments Measured at NAV
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of deferred compensation plan assets	$ 40	$ 38