XML 51 R33.htm IDEA: XBRL DOCUMENT
v3.25.3

Balance Sheet Details (Tables) | 12 Months Ended
--- | ---
Sep. 30, 2025
Balance Sheet Details [Abstract] |
Cash, Cash Equivalents and Restricted Cash | The following table provides a reconciliation of the Company’s cash and cash equivalents and restricted cash reported within the consolidated balance sheets that sum to the total cash, cash equivalents and restricted cash shown in the Company’s consolidated statements of cash flows for the periods presented (in thousands):
|  | September 30,
|  | 2025 |  | 2024
Cash and cash equivalents |  | $ | 1,344,273 |  |  | $ | 1,074,602 |
Restricted cash included in other assets, net |  | 2,095 |  |  | 3,738 |
Total cash, cash equivalents and restricted cash |  | $ | 1,346,368 |  |  | $ | 1,078,340 |
Inventories | Inventories consist of the following (in thousands):
|  | September 30,
|  | 2025 |  | 2024
Finished goods |  | $ | 26,933 |  |  | $ | 27,922 |
Raw materials |  | 50,296 |  |  | 48,456 |
|  | $ | 77,229 |  |  | $ | 76,378 |
Other Current Assets | Other current assets consist of the following (in thousands):
|  | September 30,
|  | 2025 |  | 2024
Unbilled receivables |  | $ | 498,288 |  |  | $ | 401,104 |
Prepaid expenses |  | 86,346 |  |  | 93,467 |
Capitalized contract acquisition costs |  | 37,023 |  |  | 32,681 |
Other |  | 61,109 |  |  | 42,215 |
|  | $ | 682,766 |  |  | $ | 569,467 |
Property, Plant and Equipment | Property and equipment consist of the following (in thousands):
|  | September 30,
|  | 2025 |  | 2024
Computer equipment |  | $ | 228,514 |  |  | $ | 206,861 |
Software |  | 70,808 |  |  | 71,690 |
Office furniture and equipment |  | 46,903 |  |  | 44,776 |
Leasehold improvements |  | 190,637 |  |  | 186,179 |
|  | 536,862 |  |  | 509,506 |
Accumulated depreciation and amortization |  | (379,915) |  |  | (358,563) |
|  | $ | 156,947 |  |  | $ | 150,943 |
Goodwill | Changes in the carrying amount of goodwill during fiscal years 2025 and 2024 are summarized as follows (in thousands):
Balance, September 30, 2023 |  | $ | 2,288,678 |
Other business acquisitions |  | 23,684 |
Balance, September 30, 2024 |  | 2,312,362 |
Other business acquisitions |  | 131,520 |
Balance, September 30, 2025 |  | $ | 2,443,882 |
Other Assets | Other assets consist of the following (in thousands):
|  | September 30,
|  | 2025 |  | 2024
Intangible assets |  | $ | 96,266 |  |  | $ | 111,576 |
Unbilled receivables |  | 340,153 |  |  | 277,965 |
Capitalized contract acquisition costs |  | 39,529 |  |  | 33,577 |
Other |  | 76,332 |  |  | 64,399 |
|  | $ | 552,280 |  |  | $ | 487,517 |
Intangible Assets | Intangible assets are included in other assets on the consolidated balance sheets and consist of the following (in thousands):
|  | September 30, 2025 |  | September 30, 2024
|  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Developed technology |  | $ | 280,954 |  |  | $ | (200,554) |  |  | $ | 80,400 |  |  | $ | 287,431 |  |  | $ | (192,967) |  |  | $ | 94,464 |
Customer relationships |  | 12,000 |  |  | (5,133) |  |  | 6,867 |  |  | 17,700 |  |  | (10,034) |  |  | 7,666 |
Patents and trademarks |  | 12,308 |  |  | (4,517) |  |  | 7,791 |  |  | 9,795 |  |  | (3,629) |  |  | 6,166 |
Trade names |  | 14,500 |  |  | (13,292) |  |  | 1,208 |  |  | 15,473 |  |  | (12,193) |  |  | 3,280 |
Non-compete covenants |  | — |  |  | — |  |  | — |  |  | 1,960 |  |  | (1,960) |  |  | — |
|  | $ | 319,762 |  |  | $ | (223,496) |  |  | $ | 96,266 |  |  | $ | 332,359 |  |  | $ | (220,783) |  |  | $ | 111,576 |
Estimated Amortization Expense For Intangible Assets | For intangible assets held as of September 30, 2025, amortization expense for the five succeeding fiscal years is as follows (in thousands):
2026 | $ | 43,531 |
2027 | 25,349 |
2028 | 12,914 |
2029 | 8,252 |
2030 | 3,091 |
| $ | 93,137 |
Accrued Liabilities | Accrued liabilities consist of the following (in thousands):
|  | September 30,
|  | 2025 |  | 2024
Payroll and benefits |  | $ | 189,337 |  |  | $ | 171,571 |
Operating lease liabilities, current |  | 31,042 |  |  | 33,779 |
Income and other tax accruals |  | 44,051 |  |  | 45,247 |
Other |  | 50,953 |  |  | 49,479 |
|  | $ | 315,383 |  |  | $ | 300,076 |
Other Long-term Liabilities | Other long-term liabilities consist of the following (in thousands):
|  | September 30,
|  | 2025 |  | 2024
Income taxes payable |  | $ | 85,278 |  |  | $ | 85,461 |
Other |  | 10,953 |  |  | 9,272 |
|  | $ | 96,231 |  |  | $ | 94,733 |

X
- Definition Balance Sheet Details [Abstract] + References No definition available. + Details
Name: | ffiv_BalanceSheetDetailsAbstract
Namespace Prefix: | ffiv_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of other noncurrent liabilities. + References No definition available. + Details
Name: | us-gaap_OtherNoncurrentLiabilitiesTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 10 -Topic 360 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482099/360-10-50-1 + Details
Name: | us-gaap_PropertyPlantAndEquipmentTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the components of accrued liabilities. + References No definition available. + Details
Name: | us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the components of cash and cash equivalents. + References No definition available. + Details
Name: | us-gaap_ScheduleOfCashAndCashEquivalentsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name Accounting Standards Codification -Section 55 -Paragraph 40 -SubTopic 30 -Topic 350 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482640/350-30-55-40 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-2 + Details
Name: | us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 24 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482548/350-20-55-24 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482573/350-20-50-1 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (h) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482573/350-20-50-1 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482573/350-20-50-1 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482573/350-20-50-1 Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482573/350-20-50-1 Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482573/350-20-50-1 Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482573/350-20-50-1 Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482573/350-20-50-1 Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (g) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482573/350-20-50-1 Reference 11: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1A -Publisher FASB -URI https://asc.fasb.org/1943274/2147482573/350-20-50-1A Reference 12: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482573/350-20-50-2 + Details
Name: | us-gaap_ScheduleOfGoodwillTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(c)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483489/210-10-50-1 + Details
Name: | us-gaap_ScheduleOfInventoryCurrentTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the carrying amounts of other assets. This disclosure includes other current assets and other noncurrent assets. + References No definition available. + Details
Name: | us-gaap_ScheduleOfOtherAssetsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the carrying amounts of other current assets. + References No definition available. + Details
Name: | us-gaap_ScheduleOfOtherCurrentAssetsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name Accounting Standards Codification -Section 55 -Paragraph 40 -SubTopic 30 -Topic 350 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482640/350-30-55-40 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-2 + Details
Name: | us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration