v3.8.0.1

Stockholders' Equity - Components of Accumulated Other Comprehensive Loss, Net of Taxes (Details) $ in Millions | 6 Months Ended
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Apr. 30, 2018 USD ($)
Components of accumulated other comprehensive loss, net of taxes |
Balance at beginning of period | $ 23,505
Balance at end of period | 23,966
Net unrealized gains (losses) on available-for-sale securities |
Components of accumulated other comprehensive loss, net of taxes |
Balance at beginning of period | 29
Other comprehensive income (loss) before reclassifications | 1
Reclassifications of (gains) losses into earnings | (9)
Balance at end of period | 21
Net unrealized gains (losses) on cash flow hedges |
Components of accumulated other comprehensive loss, net of taxes |
Balance at beginning of period | (48)
Other comprehensive income (loss) before reclassifications | (85)
Reclassifications of (gains) losses into earnings | 105
Balance at end of period | (28)
Unrealized components of defined benefit plans |
Components of accumulated other comprehensive loss, net of taxes |
Balance at beginning of period | (2,690)
Other comprehensive income (loss) before reclassifications | 1
Reclassifications of (gains) losses into earnings | 85
Balance at end of period | (2,604)
Cumulative translation adjustment |
Components of accumulated other comprehensive loss, net of taxes |
Balance at beginning of period | (186)
Other comprehensive income (loss) before reclassifications | 1
Reclassifications of (gains) losses into earnings | 0
Balance at end of period | (371)
Accumulated other comprehensive loss |
Components of accumulated other comprehensive loss, net of taxes |
Balance at beginning of period | (2,895)
Other comprehensive income (loss) before reclassifications | (82)
Reclassifications of (gains) losses into earnings | 181
Balance at end of period | (2,982)
Separation and merger transactions | Cumulative translation adjustment |
Components of accumulated other comprehensive loss, net of taxes |
Adjustments related to transactions | (186)
Separation and merger transactions | Accumulated other comprehensive loss |
Components of accumulated other comprehensive loss, net of taxes |
Adjustments related to transactions | $ (186)

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