Stockholders' Equity, Comprehensive Income and Share-Based Compensation (Stock Repurchases) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
Oct. 25, 2020	Oct. 27, 2019	Oct. 28, 2018
Equity [Abstract]
Shares of common stock repurchased (in shares)	12	60	102
Cost of stock repurchased	$ 649	$ 2,403	$ 5,283
Average price paid per share (in dollars per share)	$ 56.32	$ 39.86	$ 51.55

Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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