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FINANCIAL INSTRUMENTS (Income Statement) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
Derivative [Line Items] |  |
Other income (expense), net | $ 4 | $ (16)
Other Nonoperating Income (Expense) |  |
Derivative [Line Items] |  |
Hedged items (Long-term debt) | 0 | (69)
Other Nonoperating Income (Expense) | Fair Value Hedging |  |
Derivative [Line Items] |  |
Derivatives designated as hedging instruments | $ 0 | $ 69

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