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STOCKHOLDERS' EQUITY (Changes in Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Oct. 31, 2019 | Oct. 31, 2018 | Oct. 31, 2017
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] |  |  |
Beginning Balance | $ 2,433 | $ 2,310 | $ 1,513
Other comprehensive income (loss) | (90) | (31) | 161
Ending Balance | 3,004 | 2,433 | 2,310
AOCI Including Portion Attributable to Noncontrolling Interest [Member] |  |  |
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] |  |  |
Beginning Balance | (488) | (457) |
Other comprehensive income (loss) before reclassifications | (156) | (61) |
Amounts reclassified out of accumulated other comprehensive income | 33 | 27 |
Tax (expense) benefit | 33 | 3 |
Other comprehensive income (loss) | (90) | (31) |
Ending Balance | (578) | (488) | (457)
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Including Noncontrolling Interest [Member] |  |  |
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] |  |  |
Beginning Balance | 0 | 14 |
Other comprehensive income (loss) before reclassifications | 0 | (17) |
Amounts reclassified out of accumulated other comprehensive income | 0 | 0 |
Tax (expense) benefit | 0 | 3 |
Other comprehensive income (loss) | 0 | (14) |
Ending Balance | 0 | 0 | 14
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest [Member] |  |  |
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] |  |  |
Beginning Balance | (60) | (39) |
Other comprehensive income (loss) before reclassifications | 17 | (21) |
Amounts reclassified out of accumulated other comprehensive income | 0 | 0 |
Tax (expense) benefit | 0 | 0 |
Other comprehensive income (loss) | 17 | (21) |
Ending Balance | (43) | (60) | (39)
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Including Portion Attributable to Noncontrolling Interest [Member] |  |  |
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] |  |  |
Beginning Balance | (445) | (468) |
Other comprehensive income (loss) before reclassifications | (168) | (23) |
Amounts reclassified out of accumulated other comprehensive income | 49 | 53 |
Tax (expense) benefit | 28 | (7) |
Other comprehensive income (loss) | (91) | 23 |
Ending Balance | (536) | (445) | (468)
Accumulated Defined Benefit Plans Adjustment, Net Prior Service Including Portion Attributable to Noncontrolling Interest [Member] |  |  |
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] |  |  |
Beginning Balance | 19 | 35 |
Other comprehensive income (loss) before reclassifications | 0 | 0 |
Amounts reclassified out of accumulated other comprehensive income | (19) | (22) |
Tax (expense) benefit | 4 | 6 |
Other comprehensive income (loss) | (15) | (16) |
Ending Balance | 4 | 19 | 35
Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest [Member] |  |  |
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] |  |  |
Beginning Balance | (2) | 1 |
Other comprehensive income (loss) before reclassifications | (5) | 0 |
Amounts reclassified out of accumulated other comprehensive income | 3 | (4) |
Tax (expense) benefit | 1 | 1 |
Other comprehensive income (loss) | (1) | (3) |
Ending Balance | $ (3) | $ (2) | $ 1

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