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CONDENSED CONSOLIDATED STATEMENT OF EQUITY - USD ($) shares in Thousands, $ in Millions | Total | Common Stock | Additional Paid-in Capital | Treasury Stock | Retained Earnings (Accumulated Deficit) | Accumulated Other Comprehensive Loss | Total Stockholder's Equity | Non-controlling Interest | Revision of Prior Period Adjustment, Accounting Standards Update | Revision of Prior Period Adjustment, Accounting Standards Update Retained Earnings (Accumulated Deficit) | Revision of Prior Period Adjustment, Accounting Standards Update Accumulated Other Comprehensive Loss | Revision of Prior Period Adjustment, Accounting Standards Update Total Stockholder's Equity
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Beginning Treasury Stock, Shares at Oct. 31, 2018 |  |  |  | 0 |  |  |  |  |  |  |  |
Beginning Treasury Stock, Value at Oct. 31, 2018 |  |  |  | $ 0 |  |  |  |  |  |  |  |
Beginning Balance (in Shares) at Oct. 31, 2018 |  | 317,715 |  |  |  |  |  |  |  |  |  |
Beginning Balance at Oct. 31, 2018 | $ 4,571 | $ 3 | $ 5,308 |  | $ (336) | $ (408) | $ 4,567 | $ 4 | $ 26 | $ 33 | $ (7) | $ 26
Components of comprehensive income, net of tax |  |  |  |  |  |  |  |  |  |  |  |
Net income | 877 |  |  |  | 877 |  | 877 |  |  |  |  |
Other comprehensive income (loss) | 11 |  |  |  |  | 11 | 11 |  |  |  |  |
Total comprehensive income, net of tax | 888 |  |  |  |  |  | 888 |  |  |  |  |
Purchase of non-controlling interest increase (decrease) | (4) |  |  |  |  |  |  | (4) |  |  |  |
Cash dividends declared | (155) |  |  |  | (155) |  | (155) |  |  |  |  |
Share-based awards issued, net of tax (in shares) |  | 1,652 |  |  |  |  |  |  |  |  |  |
Share-based awards issued | 37 |  | 37 |  |  |  | 37 |  |  |  |  |
Repurchase of common stock (in shares) |  |  |  | (9,770) |  |  |  |  |  |  |  |
Treasury Stock, Value, Acquired, Cost Method | (674) |  |  | $ (674) |  |  | (674) |  |  |  |  |
Retirement of treasury shares (in shares) |  | (9,770) |  | (9,770) |  |  |  |  |  |  |  |
Retirement of treasury shares | 0 | $ 0 | (133) | $ (674) | (541) |  | 0 |  |  |  |  |
Share-based compensation | 58 |  | 58 |  |  |  | 58 |  |  |  |  |
Ending Treasury Stock, Shares at Jul. 31, 2019 |  |  |  | 0 |  |  |  |  |  |  |  |
Ending Treasury Stock, Value at Jul. 31, 2019 |  |  |  | $ 0 |  |  |  |  |  |  |  |
Ending Balance (in Shares) at Jul. 31, 2019 |  | 309,597 |  |  |  |  |  |  |  |  |  |
Ending Balance at Jul. 31, 2019 | 4,747 | $ 3 | 5,270 |  | (122) | (404) | 4,747 | 0 |  |  |  |
Beginning Treasury Stock, Shares at Apr. 30, 2019 |  |  |  | (9) |  |  |  |  |  |  |  |
Beginning Treasury Stock, Value at Apr. 30, 2019 |  |  |  | $ (1) |  |  |  |  |  |  |  |
Beginning Balance (in Shares) at Apr. 30, 2019 |  | 317,285 |  |  |  |  |  |  |  |  |  |
Beginning Balance at Apr. 30, 2019 | 5,125 | $ 3 | 5,343 |  | 178 | (398) | 5,125 | 0 |  |  |  |
Components of comprehensive income, net of tax |  |  |  |  |  |  |  |  |  |  |  |
Net income | 191 |  |  |  | 191 |  | 191 |  |  |  |  |
Other comprehensive income (loss) | (6) |  |  |  |  | (6) | (6) |  |  |  |  |
Total comprehensive income, net of tax | 185 |  |  |  |  |  | 185 |  |  |  |  |
Cash dividends declared | (51) |  |  |  | (51) |  | (51) |  |  |  |  |
Share-based awards issued, net of tax (in shares) |  | 325 |  |  |  |  |  |  |  |  |  |
Share-based awards issued | 19 |  | 19 |  |  |  | 19 |  |  |  |  |
Repurchase of common stock (in shares) |  |  |  | (8,004) |  |  |  |  |  |  |  |
Treasury Stock, Value, Acquired, Cost Method | (549) |  |  | $ (549) |  |  | (549) |  |  |  |  |
Retirement of treasury shares (in shares) |  | (8,013) |  | (8,013) |  |  |  |  |  |  |  |
Retirement of treasury shares | 0 | $ 0 | (110) | $ (550) | (440) |  | 0 |  |  |  |  |
Share-based compensation | 18 |  | 18 |  |  |  | 18 |  |  |  |  |
Ending Treasury Stock, Shares at Jul. 31, 2019 |  |  |  | 0 |  |  |  |  |  |  |  |
Ending Treasury Stock, Value at Jul. 31, 2019 |  |  |  | $ 0 |  |  |  |  |  |  |  |
Ending Balance (in Shares) at Jul. 31, 2019 |  | 309,597 |  |  |  |  |  |  |  |  |  |
Ending Balance at Jul. 31, 2019 | 4,747 | $ 3 | 5,270 |  | (122) | (404) | 4,747 | 0 |  |  |  |
Beginning Treasury Stock, Shares at Oct. 31, 2019 |  |  |  | 0 |  |  |  |  |  |  |  |
Beginning Treasury Stock, Value at Oct. 31, 2019 |  |  |  | $ 0 |  |  |  |  |  |  |  |
Beginning Balance (in Shares) at Oct. 31, 2019 |  | 309,071 |  |  |  |  |  |  |  |  |  |
Beginning Balance at Oct. 31, 2019 | 4,748 | $ 3 | 5,277 |  | (18) | (514) | 4,748 | 0 |  |  |  |
Components of comprehensive income, net of tax |  |  |  |  |  |  |  |  |  |  |  |
Net income | 497 |  |  |  | 497 |  | 497 |  |  |  |  |
Other comprehensive income (loss) | 38 |  |  |  |  | 38 | 38 |  |  |  |  |
Total comprehensive income, net of tax | 535 |  |  |  |  |  | 535 |  |  |  |  |
Cash dividends declared | (167) |  |  |  | (167) |  | (167) |  |  |  |  |
Share-based awards issued, net of tax (in shares) |  | 2,258 |  |  |  |  |  |  |  |  |  |
Share-based awards issued | 21 |  | 21 |  |  |  | 21 |  |  |  |  |
Repurchase of common stock (in shares) |  |  |  | (2,751) |  |  |  |  |  |  |  |
Treasury Stock, Value, Acquired, Cost Method | (219) |  |  | $ (219) |  |  | (219) |  |  |  |  |
Retirement of treasury shares (in shares) |  | (2,751) |  | (2,751) |  |  |  |  |  |  |  |
Retirement of treasury shares | 0 | $ 0 | (37) | $ (219) | (182) |  | 0 |  |  |  |  |
Share-based compensation | 63 |  | 63 |  |  |  | 63 |  |  |  |  |
Ending Treasury Stock, Shares at Jul. 31, 2020 |  |  |  | 0 |  |  |  |  |  |  |  |
Ending Treasury Stock, Value at Jul. 31, 2020 |  |  |  | $ 0 |  |  |  |  |  |  |  |
Ending Balance (in Shares) at Jul. 31, 2020 |  | 308,578 |  |  |  |  |  |  |  |  |  |
Ending Balance at Jul. 31, 2020 | 4,981 | $ 3 | 5,324 |  | 130 | (476) | 4,981 | 0 |  |  |  |
Beginning Treasury Stock, Shares at Apr. 30, 2020 |  |  |  | 0 |  |  |  |  |  |  |  |
Beginning Treasury Stock, Value at Apr. 30, 2020 |  |  |  | $ 0 |  |  |  |  |  |  |  |
Beginning Balance (in Shares) at Apr. 30, 2020 |  | 308,443 |  |  |  |  |  |  |  |  |  |
Beginning Balance at Apr. 30, 2020 | 4,768 | $ 3 | 5,288 |  | 15 | (538) | 4,768 | 0 |  |  |  |
Components of comprehensive income, net of tax |  |  |  |  |  |  |  |  |  |  |  |
Net income | 199 |  |  |  | 199 |  | 199 |  |  |  |  |
Other comprehensive income (loss) | 62 |  |  |  |  | 62 | 62 |  |  |  |  |
Total comprehensive income, net of tax | 261 |  |  |  |  |  | 261 |  |  |  |  |
Cash dividends declared | (56) |  |  |  | (56) |  | (56) |  |  |  |  |
Share-based awards issued, net of tax (in shares) |  | 497 |  |  |  |  |  |  |  |  |  |
Share-based awards issued | 22 |  | 22 |  |  |  | 22 |  |  |  |  |
Repurchase of common stock (in shares) |  |  |  | (362) |  |  |  |  |  |  |  |
Treasury Stock, Value, Acquired, Cost Method | (33) |  |  | $ (33) |  |  | 33 |  |  |  |  |
Retirement of treasury shares (in shares) |  | (362) |  | (362) |  |  |  |  |  |  |  |
Retirement of treasury shares | 0 | $ 0 | (5) | $ (33) | (28) |  | 0 |  |  |  |  |
Share-based compensation | 19 |  | 19 |  |  |  | 19 |  |  |  |  |
Ending Treasury Stock, Shares at Jul. 31, 2020 |  |  |  | 0 |  |  |  |  |  |  |  |
Ending Treasury Stock, Value at Jul. 31, 2020 |  |  |  | $ 0 |  |  |  |  |  |  |  |
Ending Balance (in Shares) at Jul. 31, 2020 |  | 308,578 |  |  |  |  |  |  |  |  |  |
Ending Balance at Jul. 31, 2020 | $ 4,981 | $ 3 | $ 5,324 |  | $ 130 | $ (476) | $ 4,981 | $ 0 |  |  |  |

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