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RELATED PARTIES - Summary Of Related Party Transactions (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2020
Related Party Transaction [Line Items] |  |  |  |  |
Revenues from related parties | $ 35 | $ 282 | $ 112 | $ 293 |
Revenues | $ 5,045 | $ 1,093 | $ 9,094 | $ 1,452 |
Related party revenues as a percent of Revenues | 1.00% | 26.00% | 1.00% | 20.00% |
Purchases from related parties | $ 15 | $ 9 | $ 42 | $ 12 |
Accounts receivable, net |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Accounts receivable, net | 3 |  | 3 |  | $ 2
Accounts payable |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Accounts payable | $ (8) |  | $ (8) |  | $ (6)

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