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Net Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2021	Apr. 30, 2020	Apr. 30, 2021	Apr. 30, 2020
Numerator:
Net earnings	$ 1,228	$ 764	$ 2,296	$ 1,442
Denominator:
Weighted-average shares used to compute basic net EPS (shares)	1,234	1,435	1,260	1,444
Dilutive effect of employee stock plans (shares)	13	5	10	6
Weighted-average shares used to compute diluted net EPS (shares)	1,247	1,440	1,270	1,450
Net earnings per share:
Basic (usd per share)	$ 1.00	$ 0.53	$ 1.82	$ 1.00
Diluted (usd per share)	$ 0.98	$ 0.53	$ 1.81	$ 0.99
Anti-dilutive weighted average stock-based compensation awards (shares)	0	14	3	12

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