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DERIVATIVE INSTRUMENTS - Narrative (Details) - USD ($) $ in Millions | Mar. 31, 2021 | Dec. 31, 2020 | Feb. 29, 2020
--- | --- | --- | ---
Derivative [Line Items] |  |  |
Derivative instruments and hedges, liabilities | $ 510 | $ 521 |
Unsecured Senior Notes, 1.85% | Senior notes [Member] |  |  |
Derivative [Line Items] |  |  |
Interest rate | 1.85% |  | 1.85%
Designated as Hedging Instrument [Member] | Fair Value Hedging [Member] |  |  |
Derivative [Line Items] |  |  |
Derivative, notional amount | $ 500 | 500 |
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] |  |  |
Derivative [Line Items] |  |  |
Derivative, notional amount | $ 34 | $ 34 |

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