Stockholders' Equity, Comprehensive Income and Share-Based Compensation (Stock Repurchases) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
Oct. 27, 2019	Oct. 28, 2018	Oct. 29, 2017
Equity [Abstract]
Shares of common stock repurchased (in shares)	60	102	28
Common stock repurchases	$ (2,403)	$ (5,283)	$ (1,172)
Average price paid per share (in dollars per share)	$ 39.86	$ 51.55	$ 42.08

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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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