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BENEFIT PLANS - COMPONENTS OF NET PERIODIC BENEFIT COSTS (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Nov. 07, 2020 | Nov. 09, 2019 | Nov. 07, 2020 | Nov. 09, 2019
Pension Benefits |  |  |  |
Components of net periodic benefit cost: |  |  |  |
Service cost | $ 3 | $ 6 | $ 10 | $ 24
Interest cost | 26 | 32 | 86 | 105
Expected return on plan assets | (39) | (43) | (130) | (140)
Amortization of: |  |  |  |
Actuarial loss (gain) | 8 | 16 | 27 | 47
Net periodic benefit cost | (2) | 11 | (7) | 36
Contributions into Fund |  |  | 0 | 0
Other Benefits |  |  |  |
Components of net periodic benefit cost: |  |  |  |
Service cost | 3 | 2 | 6 | 6
Interest cost | 1 | 2 | 4 | 6
Amortization of: |  |  |  |
Prior service cost | (3) | (3) | (9) | (8)
Actuarial loss (gain) | (2) | (3) | (6) | (8)
Net periodic benefit cost | $ (1) | $ (2) | $ (5) | $ (4)

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