| **Investments in Non-Consolidated Affiliates Combined Assets, Liabilities and Equity of Equity Method Investments (Details) - USD ($) $ in Millions** | Oct. 31, 2020 | Oct. 31, 2019 |
|-------------------------------------------------------------------------------------------------------------------------------------------------------|---------------|---------------|
| **Investments in and Advances to Affiliates [Line Items]**                                                                                            |          |          |
| Equity Method Investment, Underlying Equity in Net Assets                                                                                             | $ 250         | $ 314         |
| Equity Method Investments                                                                                                                             | 250           | 314           |
| Current assets                                                                                                                                        |          |          |
| **Investments in and Advances to Affiliates [Line Items]**                                                                                            |          |          |
| Equity Method Investment, Underlying Equity in Net Assets                                                                                             | 158           | 186           |
| Noncurrent assets                                                                                                                                     |          |          |
| **Investments in and Advances to Affiliates [Line Items]**                                                                                            |          |          |
| Equity Method Investment, Underlying Equity in Net Assets                                                                                             | 92            | 128           |
| Current liabilities                                                                                                                                   |          |          |
| **Investments in and Advances to Affiliates [Line Items]**                                                                                            |          |          |
| Equity Method Investments                                                                                                                             | 73            | 96            |
| Noncurrent liabilities                                                                                                                                |          |          |
| **Investments in and Advances to Affiliates [Line Items]**                                                                                            |          |          |
| Equity Method Investments                                                                                                                             | 58            | 93            |
| Total liabilities                                                                                                                                     |          |          |
| **Investments in and Advances to Affiliates [Line Items]**                                                                                            |          |          |
| Equity Method Investments                                                                                                                             | 131           | 189           |
| NIC                                                                                                                                                   |          |          |
| **Investments in and Advances to Affiliates [Line Items]**                                                                                            |          |          |
| Equity Method Investments                                                                                                                             | 31            | 32            |
| Third parties                                                                                                                                         |          |          |
| **Investments in and Advances to Affiliates [Line Items]**                                                                                            |          |          |
| Equity Method Investments                                                                                                                             | 88            | 93            |
| Total partners' capital and stockholders' equity                                                                                                      |          |          |
| **Investments in and Advances to Affiliates [Line Items]**                                                                                            |          |          |
| Equity Method Investments                                                                                                                             | $ 119         | $ 125         |

| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
This item represents the entity's ownership percentage in the investee multiplied by the investee's total equity.
+ References
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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.
+ References
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| - Definition
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
+ References
No definition available.
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