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GOODWILL AND INTANGIBLE ASSETS - Other Intangibles (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items] |  |
Gross | $ 82 | $ 34
Accumulated Amortization | 14 | 3
Net | $ 68 | 31
Acquired technology |  |
Finite-Lived Intangible Assets [Line Items] |  |
Useful life | 7 years |
Gross | $ 21 | 20
Accumulated Amortization | 4 | 1
Net | 17 | 19
Acquired relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross | 37 | 11
Accumulated Amortization | 5 | 1
Net | $ 32 | 10
Naming Rights |  |
Finite-Lived Intangible Assets [Line Items] |  |
Useful life | 10 years |
Gross | $ 11 | 0
Accumulated Amortization | 1 | 0
Net | 10 | 0
Other |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross | 13 | 3
Accumulated Amortization | 4 | 1
Net | $ 9 | $ 2
Minimum | Acquired relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Useful life | 5 years |
Minimum | Other |  |
Finite-Lived Intangible Assets [Line Items] |  |
Useful life | 2 years |
Maximum | Acquired relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Useful life | 15 years |
Maximum | Other |  |
Finite-Lived Intangible Assets [Line Items] |  |
Useful life | 7 years |

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