Change In Fair Value Of Convertible Senior Notes

No definition available.

Name:	panw_ChangeInFairValueOfConvertibleSeniorNotes
Namespace Prefix:	panw_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Changes In Fair Value Attributable To Instrument Specific Credit Risk

+ References

No definition available.

+ Details

Name:	panw_ChangesInFairValueAttributableToInstrumentSpecificCreditRisk
Namespace Prefix:	panw_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Debt Instrument, Face Amount, Surrendered To Conversion

+ References

No definition available.

+ Details

Name:	panw_DebtInstrumentFaceAmountSurrenderedToConversion
Namespace Prefix:	panw_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The value of the financial instrument issued [noncash or part noncash] in the conversion of stock. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The number of new shares issued in the conversion of stock in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

+ Details

Name:	us-gaap_ConversionOfStockSharesIssued1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

The value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

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Balance Type:	credit
Period Type:	duration

- Definition

The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period.

+ References

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	duration

- Definition

The price per share of the conversion feature embedded in the debt instrument.

+ References

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Period Type:	instant

- Definition

The amount by which the convertible debt's if-converted value exceeds its principle amount at the balance sheet date, regardless of whether the instrument is currently convertible. This element applies to public companies only.

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Balance Type:	credit
Period Type:	duration

- Definition

Price of the entity's common stock which would be required to be attained for the conversion feature embedded in the debt instrument to become effective.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Threshold period of specified consecutive trading days within which common stock price to conversion price of convertible debt instrument must exceed threshold percentage for specified number of trading days to trigger conversion feature.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Minimum percentage of common stock price to conversion price of convertible debt instruments to determine eligibility of conversion.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	duration

- Definition

Threshold number of specified trading days that common stock price to conversion price of convertible debt instruments must exceed threshold percentage within a specified consecutive trading period to trigger conversion feature.

+ References

No definition available.

+ Details

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- Definition

Face (par) amount of debt instrument at time of issuance.

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Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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- Definition

Percentage of principal amount of debt redeemed.

+ References

No definition available.

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- Definition

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Balance Type:	debit
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- Definition

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

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Period Type:	instant

- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the amount of short-term debt existing as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-28

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-11

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-11

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-10

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

+ Details

Name:	us-gaap_ShorttermDebtFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_ConvertibleDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=panw_ConvertibleSeniorNotesDue2030Member
Namespace Prefix:
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Balance Type:
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- Details

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Namespace Prefix:
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Balance Type:
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- Details

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Namespace Prefix:
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- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
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Balance Type:
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- Details

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Data Type:	na
Balance Type:
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- Details

Name:	us-gaap_DebtInstrumentRedemptionPeriodAxis=us-gaap_DebtInstrumentRedemptionPeriodOneMember
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- Details

Name:	us-gaap_DebtInstrumentRedemptionPeriodAxis=us-gaap_DebtInstrumentRedemptionPeriodThreeMember
Namespace Prefix:
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Debt (2030 Convertible Senior Notes and Capped Calls Transactions) (Details)				1 Months Ended	3 Months Ended		9 Months Ended
	May 07, 2026 USD ($)	Apr. 30, 2026 USD ($) day	Feb. 11, 2026 USD ($) day $ / shares shares	Apr. 30, 2026 USD ($)	Apr. 30, 2026 USD ($)	Apr. 30, 2025 USD ($)	Apr. 30, 2026 USD ($)	Apr. 30, 2025 USD ($)	Jul. 31, 2025 USD ($)
Debt Instrument, Redemption
Short-term convertible senior notes		$ 160,000,000		$ 160,000,000	$ 160,000,000		$ 160,000,000		$ 0
Long-term convertible senior notes		1,192,000,000		1,192,000,000	1,192,000,000		1,192,000,000		0
Change in fair value of convertible senior notes						$ 0	37,000,000	$ 0
Derivative asset		94,000,000		94,000,000	94,000,000		94,000,000		$ 0
Change in fair value of capped calls					(1,000,000)	$ 0	(1,000,000)	$ 0
Convertible Debt
Debt Instrument, Redemption
Debt instrument, convertible, value in excess of principal				10,000,000
2030 Notes \| Convertible Debt
Debt Instrument, Redemption
Aggregate principal amount		$ 1,100,000,000	$ 1,250,000,000	1,100,000,000	1,100,000,000		1,100,000,000
Contractual interest rate (in percentage)			0.00%
Conversion of stock, shares issued (in shares) \| shares			4.3161
Debt conversion, converted instrument, issued (in shares) \| shares			5,400,000
Debt instrument, convertible, conversion price (in usd per share) \| $ / shares			$ 280.75
Debt conversion, converted instrument, amount			$ 110,000,000
Debt instrument, convertible, threshold (in days) \| day			20
Debt instrument, convertible, threshold consecutive (in days) \| day		30	30
Redemption price, (in percentage)			100.00%
Redemption price, percentage of principal amount redeemed (in percentage)			100.00%
Short-term convertible senior notes		$ 160,000,000		160,000,000	160,000,000		160,000,000
Long-term convertible senior notes		1,200,000,000		1,200,000,000	1,200,000,000		1,200,000,000
Change in fair value of convertible senior notes					(37,000,000)		(37,000,000)
Changes in fair value attributable to instrument specific credit risk					(12,000,000)		(12,000,000)
Derivative asset		$ 94,000,000		$ 94,000,000	94,000,000		94,000,000
Change in fair value of capped calls					$ (1,000,000)		$ (1,000,000)
2030 Notes \| Convertible Debt \| Minimum
Debt Instrument, Redemption
Debt instrument, convertible, conversion price (in usd per share) \| $ / shares			$ 211.24
Debt Instrument, convertible, stock price trigger (in usd per share) \| $ / shares			287.21
2030 Notes \| Convertible Debt \| Maximum
Debt Instrument, Redemption
Debt Instrument, convertible, stock price trigger (in usd per share) \| $ / shares			291.44
2030 Notes \| Convertible Debt \| Subsequent Event
Debt Instrument, Redemption
Debt conversion, converted instrument, amount	$ 160,000,000
Debt surrendered	$ 153,000,000
2030 Notes \| Convertible Debt \| Debt Instrument, Redemption, Period Two
Debt Instrument, Redemption
Debt instrument, convertible, conversion price (in usd per share) \| $ / shares			$ 88.2630
Debt instrument, convertible, threshold (in days) \| day			5
Debt instrument, convertible, threshold consecutive (in days) \| day			10
Debt instrument, convertible, threshold (in percentage)			98.00%
2030 Notes \| Convertible Debt \| Debt Instrument, Redemption, Period One
Debt Instrument, Redemption
Debt instrument, convertible, conversion price (in usd per share) \| $ / shares			$ 280.75
Debt instrument, convertible, threshold (in days) \| day			20
Debt instrument, convertible, threshold consecutive (in days) \| day			30
2030 Notes \| Convertible Debt \| Debt Instrument, Redemption, Period Three
Debt Instrument, Redemption
Conversion of stock, shares issued (in shares) \| shares			5.5690
Conversion of stock amount converted			$ 113.8860