XML 42 R67.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Goodwill and Intangible Assets, Net - Details of Total Goodwill (Parenthetical) (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2015 | Sep. 30, 2014
Goodwill [Line Items] |  |
Goodwill resulting from immaterial acquisitions | $ 123,987 | $ 100,935
Value of intangible asset | 252,517 | 181,227
Core Technology [Member] |  |
Goodwill [Line Items] |  |
Value of intangible asset | 132,771 | 67,060
Customer Relationships [Member] |  |
Goodwill [Line Items] |  |
Value of intangible asset | 110,688 | 100,728
Other [Member] |  |
Goodwill [Line Items] |  |
Value of intangible asset | 9,058 | $ 13,439
Celcite [Member] |  |
Goodwill [Line Items] |  |
Goodwill resulting from immaterial acquisitions | 78,142 |
Celcite [Member] | Core Technology [Member] |  |
Goodwill [Line Items] |  |
Value of intangible asset | $ 22,372 |
Useful life of intangible assets | 3 years |
Celcite [Member] | Customer Relationships [Member] |  |
Goodwill [Line Items] |  |
Value of intangible asset | $ 46,432 |
Useful life of intangible assets | 4 years |
Celcite [Member] | Other [Member] |  |
Goodwill [Line Items] |  |
Value of intangible asset | $ 1,781 |
Useful life of intangible assets | 3 years |
Comverse [Member] |  |
Goodwill [Line Items] |  |
Goodwill resulting from immaterial acquisitions | $ 118,101 |
Comverse [Member] | Core Technology [Member] |  |
Goodwill [Line Items] |  |
Value of intangible asset | $ 97,000 |
Useful life of intangible assets | 4 years |
Comverse [Member] | Customer Relationships [Member] |  |
Goodwill [Line Items] |  |
Value of intangible asset | $ 38,639 |
Useful life of intangible assets | 5 years |

X
- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_FiniteLivedIntangibleAssetUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
Name: | us-gaap_FiniteLivedIntangibleAssetsNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
Name: | us-gaap_GoodwillAcquiredDuringPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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_GoodwillLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=dox_CoreTechnologyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_CustomerRelationshipsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_OtherIntangibleAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=dox_CelciteMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=dox_ComverseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |