Stockholders' Deficit - Narrative (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended	6 Months Ended
Apr. 30, 2026	Apr. 30, 2025	Apr. 30, 2026	Apr. 30, 2025
Stockholders' Equity Note [Abstract]
Repurchases of common stock (in shares)	5.0	3.1	18.3	5.8
Payment in connection with repurchases of shares	$ 100	$ 100	$ 425	$ 200
Shares settled (in shares)		0.3		0.3
Share repurchase authorization remaining	$ 8,000		$ 8,000

Stock Repurchases Executed During Period Settlement In Subsequent Period, Shares

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- Definition

The cash outflow to reacquire common stock during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 15
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-15

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- Definition

Amount remaining authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership.

+ References

No definition available.

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-SubTopic 10
-Topic 505
-Publisher FASB
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
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-Topic 505
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
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- References

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