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ACCOUNTING POLICIES - DESCRIPTION OF BUSINESS (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Nov. 07, 2020 | Nov. 09, 2019 | Nov. 07, 2020 | Nov. 09, 2019 | Feb. 01, 2020
Fiscal Year |  |  |  |  |
Length of fiscal period | 84 days | 84 days | 280 days | 280 days |
FAIR VALUE MEASUREMENTS |  |  |  |  |
Unrealized gain on equity securities | $ 162 | $ 106 | $ 952 | $ 166 |
Level 1 |  |  |  |  |
FAIR VALUE MEASUREMENTS |  |  |  |  |
Unrealized gain on equity securities | 162 | $ 106 | 879 | $ 166 |
Level 3 |  |  |  |  |
FAIR VALUE MEASUREMENTS |  |  |  |  |
Unrealized gain on equity securities |  |  | 73 |  |
Other Assets | Level 1 |  |  |  |  |
FAIR VALUE MEASUREMENTS |  |  |  |  |
Fair value of equity securities | 1,655 |  | 1,655 |  | $ 776
Other Assets | Level 3 |  |  |  |  |
FAIR VALUE MEASUREMENTS |  |  |  |  |
Other equity investments of fair value | $ 145 |  | $ 145 |  | $ 41

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