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Accounts Receivable, Net (Details) - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Apr. 26, 2020 | Apr. 28, 2019 | Apr. 26, 2020 | Apr. 28, 2019 | Oct. 27, 2019
Receivables [Abstract] |  |  |  |  |
Factored accounts receivable | $ 158,000,000 | $ 677,000,000 | $ 364,000,000 | $ 1,100,000,000 |
Discounted letters of credit | 0 | 0 | 0 | 0 |
Discounted promissory notes | 0 | $ 0 | 0 | $ 0 |
Allowance for doubtful accounts | $ 30,000,000 |  | $ 30,000,000 |  | $ 30,000,000

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