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Stockholders' Equity - Narrative (Details) - USD ($) $ / shares in Units, shares in Millions		12 Months Ended
	Nov. 30, 2021	Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2019	Feb. 21, 2018	Oct. 16, 2017	May 24, 2016	Oct. 13, 2015
Equity, Class of Treasury Stock [Line Items]
Cash dividends declared per share (in dollars per share)		$ 0.48	$ 0.36	$ 0.4575
Stock repurchase program authorized amount								$ 3,000,000,000
Remaining authorization		$ 1,900,000,000	$ 2,100,000,000
Subsequent Event
Equity, Class of Treasury Stock [Line Items]
Cash dividends declared per share (in dollars per share)	$ 0.12
Share Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program authorized amount					$ 2,500,000,000	$ 5,000,000,000	$ 3,000,000,000
Retired (shares)		14.7	25.3
Open market repurchases (shares)		0.8	0.0	0.5
Accelerated Share Repurchase Agreement
Equity, Class of Treasury Stock [Line Items]
Repurchased		$ 200,000,000	$ 300,000,000

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