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FINANCIAL INSTRUMENTS - Significant customer (Details) - Foreign exchange risk ¥ in Billions, $ in Billions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2021 USD ($) | Dec. 31, 2021 JPY (¥) | Dec. 31, 2020 USD ($) | Dec. 31, 2020 JPY (¥)
FINANCIAL RISK MANAGEMENT |  |  |  |
Foreign currency liabilities offset by time deposits and receivables (as a percent) | 25.00% |  |  |
United States Dollar |  |  |  |
FINANCIAL RISK MANAGEMENT |  |  |  |
Net exposure | $ | $ 1,153 |  | $ 391 |
Japanese yen |  |  |  |
FINANCIAL RISK MANAGEMENT |  |  |  |
Net exposure | ¥ |  | ¥ (2,313) |  | ¥ (3,043)
Minimum |  |  |  |
FINANCIAL RISK MANAGEMENT |  |  |  |
Duration of time deposits and hedging instruments | 3 months |  |  |
Maximum |  |  |  |
FINANCIAL RISK MANAGEMENT |  |  |  |
Duration of time deposits and hedging instruments | 12 months |  |  |
Financial asset | United States Dollar |  |  |  |
FINANCIAL RISK MANAGEMENT |  |  |  |
Net exposure | $ | $ 1,364 |  | 681 |
Financial asset | Japanese yen |  |  |  |
FINANCIAL RISK MANAGEMENT |  |  |  |
Net exposure | ¥ |  | 1 |  | 61
Financial liability | United States Dollar |  |  |  |
FINANCIAL RISK MANAGEMENT |  |  |  |
Net exposure | $ | $ (211) |  | $ (290) |
Financial liability | Japanese yen |  |  |  |
FINANCIAL RISK MANAGEMENT |  |  |  |
Net exposure | ¥ |  | ¥ (2,314) |  | ¥ (3,104)

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