XML 63 R54.htm IDEA: XBRL DOCUMENT
v3.23.1

Shareholders' Equity - Narrative (Details) - October Twenty Six Two Thousand Ten Program - USD ($) $ in Millions | Mar. 31, 2023 | Jul. 22, 2022 | Oct. 31, 2018
--- | --- | --- | ---
Equity, Class of Treasury Stock [Line Items] |  |  |
Stock Repurchase Program, Authorized Amount |  | $ 1,000 | $ 5,400
Stock Repurchase Program, Remaining Authorized Repurchase Amount | $ 1,232 |  |

X
- 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
Name: | us-gaap_EquityClassOfTreasuryStockLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
Name: | us-gaap_StockRepurchaseProgramAuthorizedAmount1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount remaining of a stock repurchase plan authorized. + References No definition available. + Details
Name: | us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_ShareRepurchaseProgramAxis=ffiv_OctoberTwentySixTwoThousandTenProgramMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |