| **Consolidated Statements of Stockholders' Deficit - USD ($) $ in Millions** | Total     | Series D Convertible Junior Preference Stock | Common Stock | Additional Paid-in Capital | Accumulated Deficit | Accumulated Other Comprehensive Income (Loss) | Common Stock Held in Treasury, at cost | Stockholders' Equity Attributable to Non-controlling Interests |
|------------------------------------------------------------------------------|-----------|----------------------------------------------|--------------|----------------------------|---------------------|-----------------------------------------------|----------------------------------------|----------------------------------------------------------------|
| Stockholders' Equity balance at beginning of period at Oct. 31, 2018         | $ (3,926) | $ 2                                          | $ 10         | $ 2,731                    | $ (4,593)           | $ (1,920)                                     | $ (161)                                | $ 5                                                            |
| **Increase (Decrease) in Stockholders' Equity [Roll Forward]**               |      |                                         |         |                       |                |                                          |                                   |                                                           |
| Net income (loss)                                                            | 17        |                                         |         |                       | 11                  |                                          |                                   | 6                                                              |
| Total other comprehensive income                                             | 129       |                                         |         |                       |                | 129                                           |                                   |                                                           |
| Stock-based compensation                                                     | 2         |                                         |         | 2                          |                |                                          |                                   |                                                           |
| Stock ownership programs                                                     | 0         |                                         |         | (1)                        |                |                                          | 1                                      |                                                           |
| Cash dividends paid to non-controlling interest                              | (8)       |                                         |         |                       |                |                                          |                                   | (8)                                                            |
| Stockholders' Equity balance at end of period at Jan. 31, 2019               | (3,813)   | 2                                            | 10           | 2,732                      | (4,609)             | (1,791)                                       | (160)                                  | 3                                                              |
| Stockholders' Equity balance at beginning of period at Oct. 31, 2018         | (3,926)   | 2                                            | 10           | 2,731                      | (4,593)             | (1,920)                                       | (161)                                  | 5                                                              |
| **Increase (Decrease) in Stockholders' Equity [Roll Forward]**               |      |                                         |         |                       |                |                                          |                                   |                                                           |
| Net income (loss)                                                            | (26)      |                                         |         |                       |                |                                          |                                   |                                                           |
| Net Income (Loss) Attributable to Noncontrolling Interest                    | 11        |                                         |         |                       |                |                                          |                                   |                                                           |
| Total other comprehensive income                                             | 134       |                                         |         |                       |                |                                          |                                   |                                                           |
| Stockholders' Equity balance at end of period at Apr. 30, 2019               | (3,852)   | 2                                            | 10           | 2,728                      | (4,657)             | (1,786)                                       | (152)                                  | 3                                                              |
| Stockholders' Equity balance at beginning of period at Jan. 31, 2019         | (3,813)   | 2                                            | 10           | 2,732                      | (4,609)             | (1,791)                                       | (160)                                  | 3                                                              |
| **Increase (Decrease) in Stockholders' Equity [Roll Forward]**               |      |                                         |         |                       |                |                                          |                                   |                                                           |
| Net income (loss)                                                            | (43)      |                                         |         |                       | (48)                |                                          |                                   |                                                           |
| Net Income (Loss) Attributable to Noncontrolling Interest                    | 5         |                                         |         |                       |                |                                          |                                   | 5                                                              |
| Total other comprehensive income                                             | 5         |                                         |         |                       |                | 5                                             |                                   |                                                           |
| Stock-based compensation                                                     | 5         |                                         |         | 5                          |                |                                          |                                   |                                                           |
| Stock ownership programs                                                     | (1)       |                                         |         | (9)                        |                |                                          | 8                                      |                                                           |
| Cash dividends paid to non-controlling interest                              | (5)       |                                         |         |                       |                |                                          |                                   | (5)                                                            |
| Stockholders' Equity balance at end of period at Apr. 30, 2019               | (3,852)   | 2                                            | 10           | 2,728                      | (4,657)             | (1,786)                                       | (152)                                  | 3                                                              |
| Stockholders' Equity balance at beginning of period at Oct. 31, 2019         | (3,723)   | 2                                            | 10           | 2,730                      | (4,409)             | (1,912)                                       | (147)                                  | 3                                                              |
| **Increase (Decrease) in Stockholders' Equity [Roll Forward]**               |      |                                         |         |                       |                |                                          |                                   |                                                           |
| Net income (loss)                                                            | (32)      |                                         |         |                       | (36)                |                                          |                                   | 4                                                              |
| Total other comprehensive income                                             | 17        |                                         |         |                       |                | 17                                            |                                   |                                                           |
| Reclassification of stranded tax effects                                     | 0         |                                         |         |                       | 189                 | (189)                                         |                                   |                                                           |
| Stock-based compensation                                                     | 2         |                                         |         | 2                          |                |                                          |                                   |                                                           |
| Stock ownership programs                                                     | 2         |                                         |         | (2)                        |                |                                          | 4                                      |                                                           |
| Cash dividends paid to non-controlling interest                              | (5)       |                                         |         |                       |                |                                          |                                   | (5)                                                            |
| Stockholders' Equity balance at end of period at Jan. 31, 2020               | (3,739)   | 2                                            | 10           | 2,730                      | (4,256)             | (2,084)                                       | (143)                                  | 2                                                              |
| Stockholders' Equity balance at beginning of period at Oct. 31, 2019         | (3,723)   | 2                                            | 10           | 2,730                      | (4,409)             | (1,912)                                       | (147)                                  | 3                                                              |
| **Increase (Decrease) in Stockholders' Equity [Roll Forward]**               |      |                                         |         |                       |                |                                          |                                   |                                                           |
| Net income (loss)                                                            | (65)      |                                         |         |                       |                |                                          |                                   |                                                           |
| Net Income (Loss) Attributable to Noncontrolling Interest                    | 9         |                                         |         |                       |                |                                          |                                   |                                                           |
| Total other comprehensive income                                             | (62)      |                                         |         |                       |                |                                          |                                   |                                                           |
| Stockholders' Equity balance at end of period at Apr. 30, 2020               | (3,856)   | 2                                            | 10           | 2,725                      | (4,296)             | (2,163)                                       | (136)                                  | 2                                                              |
| Stockholders' Equity balance at beginning of period at Jan. 31, 2020         | (3,739)   | 2                                            | 10           | 2,730                      | (4,256)             | (2,084)                                       | (143)                                  | 2                                                              |
| **Increase (Decrease) in Stockholders' Equity [Roll Forward]**               |      |                                         |         |                       |                |                                          |                                   |                                                           |
| Net income (loss)                                                            | (33)      |                                         |         |                       | (38)                |                                          |                                   | 5                                                              |
| Net Income (Loss) Attributable to Noncontrolling Interest                    | 5         |                                         |         |                       |                |                                          |                                   |                                                           |
| Total other comprehensive income                                             | (79)      |                                         |         |                       |                | (79)                                          |                                   |                                                           |
| Stock-based compensation                                                     | 1         |                                         |         | 1                          |                |                                          |                                   |                                                           |
| Stock ownership programs                                                     | (1)       |                                         |         | (6)                        | (2)                 |                                          | 7                                      |                                                           |
| Cash dividends paid to non-controlling interest                              | (5)       |                                         |         |                       |                |                                          |                                   | (5)                                                            |
| Stockholders' Equity balance at end of period at Apr. 30, 2020               | $ (3,856) | $ 2                                          | $ 10         | $ 2,725                    | $ (4,296)           | $ (2,163)                                     | $ (136)                                | $ 2                                                            |

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Amount of increase to additional paid-in capital (APIC) from recognition of equity-based compensation.
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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.
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Decrease in noncontrolling interest balance from payment of dividends or other distributions by the non-wholly owned subsidiary or partially owned entity, included in the consolidation of the parent entity, to the noncontrolling interest holders.
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Amount of Net Income (Loss) attributable to noncontrolling interest.
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Represents the quantification of the effect of adopting the new accounting standard or change in accounting principle expected by the entity to have a significant effect on the entity's financial statements.
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Amount after tax of other comprehensive income (loss) attributable to parent entity.
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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.
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| - Definition
Aggregate value of stock issued during the period as a result of employee stock ownership plan (ESOP).
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Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.
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