XML 115 R104.htm IDEA: XBRL DOCUMENT
v3.25.3

Dividends - Summary of Dividends Declared by Board of directors (Detail) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2023
Dividends Payable [Line Items] |  |  |
Dividends Per Ordinary Share | $ 2.06 | $ 1.872 | $ 1.7
Dividends Declaration Date August 6, 2025 [Member] |  |  |
Dividends Payable [Line Items] |  |  |
Declaration Date | Aug. 06, 2025 |  |
Record Date | Sep. 30, 2025 |  |
Payment Date | Oct. 31, 2025 |  |
Dividends Per Ordinary Share | $ 0.527 |  |
Total Amount | $ 57,156 |  |
Dividends Declaration Date May 7, 2025 [Member] |  |  |
Dividends Payable [Line Items] |  |  |
Declaration Date | May 07, 2025 |  |
Record Date | Jun. 30, 2025 |  |
Payment Date | Jul. 25, 2025 |  |
Dividends Per Ordinary Share | $ 0.527 |  |
Total Amount | $ 57,969 |  |
Dividends Declaration Date February 4, 2025 [Member] |  |  |
Dividends Payable [Line Items] |  |  |
Declaration Date | Feb. 04, 2025 |  |
Record Date | Mar. 31, 2025 |  |
Payment Date | Apr. 25, 2025 |  |
Dividends Per Ordinary Share | $ 0.527 |  |
Total Amount | $ 58,615 |  |
Dividends Declaration Date November 12, 2025 [Member] |  |  |
Dividends Payable [Line Items] |  |  |
Declaration Date | Nov. 12, 2024 |  |
Record Date | Dec. 31, 2024 |  |
Payment Date | Jan. 31, 2025 |  |
Dividends Per Ordinary Share | $ 0.479 |  |
Total Amount | $ 53,729 |  |
Dividends Declaration Date August 7, 2024 [Member] |  |  |
Dividends Payable [Line Items] |  |  |
Declaration Date |  | Aug. 07, 2024 |
Record Date |  | Sep. 30, 2024 |
Payment Date |  | Oct. 25, 2024 |
Dividends Per Ordinary Share |  | $ 0.479 |
Total Amount |  | $ 54,081 |
Dividends Declaration Date May 8, 2024 [Member] |  |  |
Dividends Payable [Line Items] |  |  |
Declaration Date |  | May 08, 2024 |
Record Date |  | Jun. 28, 2024 |
Payment Date |  | Jul. 26, 2024 |
Dividends Per Ordinary Share |  | $ 0.479 |
Total Amount |  | $ 54,703 |
Dividends Declaration Date February 6, 2024 [Member] |  |  |
Dividends Payable [Line Items] |  |  |
Declaration Date |  | Feb. 06, 2024 |
Record Date |  | Mar. 29, 2024 |
Payment Date |  | Apr. 26, 2024 |
Dividends Per Ordinary Share |  | $ 0.479 |
Total Amount |  | $ 55,528 |
Dividends Declaration Date November 7, 2023 [Member] |  |  |
Dividends Payable [Line Items] |  |  |
Declaration Date |  | Nov. 07, 2023 |
Record Date |  | Dec. 29, 2023 |
Payment Date |  | Jan. 26, 2024 |
Dividends Per Ordinary Share |  | $ 0.435 |
Total Amount |  | $ 50,683 |
Dividends Declaration Date August 2, 2023 [Member] |  |  |
Dividends Payable [Line Items] |  |  |
Declaration Date |  |  | Aug. 02, 2023
Record Date |  |  | Sep. 29, 2023
Payment Date |  |  | Oct. 27, 2023
Dividends Per Ordinary Share |  |  | $ 0.435
Total Amount |  |  | $ 51,053
Dividends Declaration Date May 10, 2023 [Member] |  |  |
Dividends Payable [Line Items] |  |  |
Declaration Date |  |  | May 10, 2023
Record Date |  |  | Jun. 30, 2023
Payment Date |  |  | Jul. 28, 2023
Dividends Per Ordinary Share |  |  | $ 0.435
Total Amount |  |  | $ 51,781
Dividends Declaration Date January 31, 2023 [Member] |  |  |
Dividends Payable [Line Items] |  |  |
Declaration Date |  |  | Jan. 31, 2023
Record Date |  |  | Mar. 31, 2023
Payment Date |  |  | Apr. 28, 2023
Dividends Per Ordinary Share |  |  | $ 0.435
Total Amount |  |  | $ 52,309
Dividends Declaration Date November 8, 2022 [Member] |  |  |
Dividends Payable [Line Items] |  |  |
Declaration Date |  |  | Nov. 08, 2022
Record Date |  |  | Dec. 30, 2022
Payment Date |  |  | Jan. 27, 2023
Dividends Per Ordinary Share |  |  | $ 0.395
Total Amount |  |  | $ 47,635

X
- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1 + Details
Name: | us-gaap_CommonStockDividendsPerShareDeclared
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Date the declared dividend will be paid, in YYYY-MM-DD format. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482913/230-10-50-3 + Details
Name: | us-gaap_DividendPayableDateToBePaidDayMonthAndYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding. + 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(20)) -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(24)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(15)(5)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Topic 946 -SubTopic 405 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478790/946-405-45-2 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(15)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
Name: | us-gaap_DividendsPayableCurrentAndNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Date the dividend to be paid was declared, in YYYY-MM-DD format. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482913/230-10-50-3 + Details
Name: | us-gaap_DividendsPayableDateDeclaredDayMonthAndYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Date the holder must own the stock to be entitled to the dividend, in YYYY-MM-DD format. + References No definition available. + Details
Name: | us-gaap_DividendsPayableDateOfRecordDayMonthAndYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

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_DividendsPayableLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DividendsAxis=dox_O2025M11DividendsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=dox_O2025M8DividendsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=dox_O2025M5DividendsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=dox_O2025M2DividendsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=dox_O2024M11DividendsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=dox_O2024M8DividendsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=dox_O2024M5DividendsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=dox_O2023M2DividendsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=dox_O2023M11DividendsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=dox_O2023M8DividendsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=dox_O2023M4DividendsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=dox_O2022M2DividendsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |