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PENSION AND OTHER POSTRETIREMENT BENEFITS - Fair Value of Deferred Compensation Plans (Details) - Fair Value - USD ($) $ in Millions | Dec. 31, 2021 | Jan. 01, 2021
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value of deferred compensation plan assets | $ 112 | $ 98
Fair value of deferred compensation plan liabilities | 183 | 120
Equity securities and mutual funds |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value of deferred compensation plan liabilities | 6 | 4
Equity securities and mutual funds | Level 1 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value of deferred compensation plan liabilities | 6 | 4
Common/collective trusts and guaranteed investment contracts | Investments Measured at NAV |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value of deferred compensation plan liabilities | 177 | 116
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 | 77 | 67
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 | 77 | 67
Corporate-owned life insurance | Investments Measured at NAV |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value of deferred compensation plan assets | $ 35 | $ 31

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