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: