RETIREMENT BENEFITS - Fair Value of Deferred Compensation Plans (Details) - Estimated fair value - USD ($) $ in Millions	Jan. 02, 2026	Jan. 03, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of deferred compensation plan assets	$ 293	$ 260
Fair value of deferred compensation plan liabilities	446	367
Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of deferred compensation plan liabilities	15	10
Equity securities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of deferred compensation plan liabilities	15	10
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	431	357
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	255	219
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	255	219
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	$ 38	$ 41