Stockholders’ Deficit - Narrative (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		12 Months Ended
Jun. 19, 2018	Oct. 31, 2018	Oct. 31, 2017	Oct. 31, 2016
Stockholders' Equity Note [Abstract]
Dividends (in dollars per share)		$ 0.56	$ 0.53	$ 0.50
Repurchases of common stock (in shares)		111.0	80.0	100.0
Payment in connection with repurchases of shares		$ 2,557	$ 1,412	$ 1,161
Share repurchases that will be settled in subsequent period (shares)		1.0	1.5
Share repurchase increase in authorization	$ 4,000
Share repurchase authorization remaining		$ 3,900

Stock Repurchase Program, Increase In Authorized Amount

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Number of shares for which repurchase transactions have been executed during the period, but which will settle in the subsequent period.

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Aggregate dividends declared during the period for each share of common stock outstanding.

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The cash outflow to reacquire common stock during the period.

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Amount remaining of a stock repurchase plan authorized.

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Number of shares that have been repurchased and retired during the period.

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