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Receivables, net (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Accounts receivable, net |  |
Gross customer accounts receivable | $ 574 | $ 546
Allowance for doubtful accounts | (15) | (14)
Customer accounts receivable, net | 559 | 532
Receivables from distributors | 73 | 113
Other receivables | 40 | 25
Total receivables, net | $ 672 | $ 670

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