| Cover Page | Aug. 24, 2020 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Aug. 24, 2020 |
| Entity Registrant Name | PALO ALTO NETWORKS, INC |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-35594 |
| Entity Central Index Key | 0001327567 |
| Amendment Flag | false |
| Entity Tax Identification Number | 20-2530195 |
| Entity Address, Address Line One | 3000 Tannery Way |
| Entity Address, City or Town | Santa Clara |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 95054 |
| City Area Code | 408 |
| Local Phone Number | 753-4000 |
| Title of 12(b) Security | Common stock, $0.0001 par value per share |
| Trading Symbol | PANW |
| Security Exchange Name | NYSE |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
