Equity Award Plans (RSU and PSU Activities) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
Jul. 31, 2026	Jul. 31, 2025	Jul. 31, 2024	Jul. 31, 2023
Number of Shares
Granted (in shares)				2
RSUs
Number of Shares
Balance, beginning (in shares)	13	18	24
Granted (in shares)	15	6	9
Vested (in shares)	(9)	(9)	(12)
Forfeited (in shares)	(2)	(2)	(3)
Balance, ending (in shares)	17	13	18	24
Weighted-Average Grant-Date Fair Value Per Share
Balance, beginning (in usd per share)	$ 143.33	$ 102.59	$ 71.30
Granted (in usd per share)	184.48	189.45	137.76
Vested (in usd per share)	144.94	97.00	68.63
Forfeited (in usd per share)	158.84	115.94	84.12
Balance, ending (in usd per share)	$ 177.41	$ 143.33	$ 102.59	$ 71.30
Aggregate Intrinsic Value
Aggregate intrinsic value	$ 5,594	$ 2,285	$ 2,924	$ 3,013
RSUs \| Chronosphere, CyberArk, Koi, and Portkey
Number of Shares
Granted (in shares)	7
RSUs \| Chronosphere, Inc.
Weighted-Average Grant-Date Fair Value Per Share
Granted (in usd per share)	$ 176.20
RSUs \| CyberArk Software Ltd.
Weighted-Average Grant-Date Fair Value Per Share
Granted (in usd per share)	165.30
RSUs \| Koi Security Ltd
Weighted-Average Grant-Date Fair Value Per Share
Granted (in usd per share)	161.59
RSUs \| Portkey, Inc
Weighted-Average Grant-Date Fair Value Per Share
Granted (in usd per share)	$ 281.69
PSU
Number of Shares
Balance, beginning (in shares)	9	10	10
Granted (in shares)	4	4	4
Vested (in shares)	(3)	(1)	(3)
Forfeited (in shares)	(2)	(4)	(1)
Balance, ending (in shares)	8	9	10	10
Weighted-Average Grant-Date Fair Value Per Share
Balance, beginning (in usd per share)	$ 140.92	$ 77.95	$ 64.32
Granted (in usd per share)	186.49	201.59	91.39
Vested (in usd per share)	150.68	64.65	57.28
Forfeited (in usd per share)	146.42	92.11	68.54
Balance, ending (in usd per share)	$ 155.85	$ 140.92	$ 77.95	$ 64.32
Aggregate Intrinsic Value
Aggregate intrinsic value	$ 2,643	$ 1,635	$ 1,624	$ 1,242

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(ii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

Intrinsic value of nonvested award under share-based payment arrangement. Excludes share and unit options.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-4

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