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Stockholders' Deficit - Schedule of Accumulated Other Comprehensive Loss, Net of Taxes (Details) - USD ($) $ in Millions | 3 Months Ended
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Jan. 31, 2019 | Jan. 31, 2018
Components of accumulated other comprehensive income, net of taxes |  |
Balance at beginning of period | $ (639) |
Other comprehensive loss before reclassifications | (92) |
Reclassifications of (gain) loss into earnings | (149) |
Reclassifications of settlements into earnings | (1) |
Balance at end of period | (1,837) |
Accumulated other comprehensive loss |  |
Components of accumulated other comprehensive income, net of taxes |  |
Balance at beginning of period | (845) |
Balance at end of period | (1,087) |
Net unrealized gains on available-for-sale debt securities |  |
Components of accumulated other comprehensive income, net of taxes |  |
Balance at beginning of period | 5 |
Other comprehensive loss before reclassifications | 0 | $ (2)
Reclassifications of (gain) loss into earnings | 0 | (5)
Reclassifications of settlements into earnings | 0 |
Balance at end of period | 5 |
Net unrealized gains (losses) on cash flow hedges |  |
Components of accumulated other comprehensive income, net of taxes |  |
Balance at beginning of period | 291 |
Other comprehensive loss before reclassifications | (87) | (481)
Reclassifications of (gain) loss into earnings | (157) | $ 67
Reclassifications of settlements into earnings | 0 |
Balance at end of period | 47 |
Unrealized components of defined benefit plans |  |
Components of accumulated other comprehensive income, net of taxes |  |
Balance at beginning of period | (1,141) |
Other comprehensive loss before reclassifications | 0 |
Reclassifications of (gain) loss into earnings | 8 |
Reclassifications of settlements into earnings | (1) |
Balance at end of period | (1,134) |
Change in cumulative translation adjustment |  |
Components of accumulated other comprehensive income, net of taxes |  |
Balance at beginning of period | 0 |
Other comprehensive loss before reclassifications | (5) |
Reclassifications of (gain) loss into earnings | 0 |
Reclassifications of settlements into earnings | 0 |
Balance at end of period | $ (5) |

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- Definition Reclassification for Curtailments and Settlements from AOCI, Current Period, Net of Tax, Attributable to Parent + References No definition available. + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount after tax, before reclassification adjustments, of other comprehensive income (loss), attributable to parent. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 55 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=109228884&loc=d3e1436-108581 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669686-108580 + Details
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- Definition Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 4.E) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74512-122707 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(31)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(30)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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