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RELATED PARTIES - Summary Of Related Party Transactions (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2020
Related Party Transaction [Line Items] |  |  |
Revenue from related parties | $ 77 | $ 11 |
Revenues | $ 4,049 | $ 359 |
Related party revenues as a percent of Revenues | 2.00% | 3.00% |
Purchases from related parties | $ 27 | $ 3 |
Accounts receivable, net |  |  |
Related Party Transaction [Line Items] |  |  |
Accounts receivable, net | 30 |  | $ 2
Accounts payable |  |  |
Related Party Transaction [Line Items] |  |  |
Accounts payable | $ (9) |  | $ (6)

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