XML 107 R91.htm IDEA: XBRL DOCUMENT v3.8.0.1

Dividends - Summary of Dividends Declared by Board of directors (Detail) - USD ($) $ / shares in Units, $ in Thousands													12 Months Ended
	Aug. 02, 2017	May 09, 2017	Feb. 01, 2017	Nov. 08, 2016	Jul. 26, 2016	May 04, 2016	Feb. 02, 2016	Nov. 10, 2015	Jul. 29, 2015	Apr. 29, 2015	Jan. 27, 2015	Nov. 04, 2014	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Dividends Payable [Line Items]
Dividends Per Ordinary Share													$ 0.855	$ 0.755	$ 0.665
Dividend Declaration Date, August 2, 2017 [Member]
Dividends Payable [Line Items]
Declaration Date													Aug. 02, 2017
Record Date													Sep. 29, 2017
Payment Date													Oct. 23, 2017
Dividends Per Ordinary Share	$ 0.220
Total Amount	$ 31,736
Dividend Declaration Date, May 9, 2017 [Member]
Dividends Payable [Line Items]
Declaration Date													May 09, 2017
Record Date													Jun. 30, 2017
Payment Date													Jul. 14, 2017
Dividends Per Ordinary Share		$ 0.220
Total Amount		$ 31,981
Dividend Declaration Date, February 1, 2017 [Member]
Dividends Payable [Line Items]
Declaration Date													Feb. 01, 2017
Record Date													Mar. 31, 2017
Payment Date													Apr. 14, 2017
Dividends Per Ordinary Share			$ 0.220
Total Amount			$ 32,223
Dividend Declaration Date, November 8, 2016 [Member]
Dividends Payable [Line Items]
Declaration Date													Nov. 08, 2016
Record Date													Dec. 30, 2016
Payment Date													Jan. 13, 2017
Dividends Per Ordinary Share				$ 0.195
Total Amount				$ 28,606
Declaration Date, July 26, 2016 [Member]
Dividends Payable [Line Items]
Declaration Date													Jul. 26, 2016
Record Date													Sep. 30, 2016
Payment Date													Oct. 21, 2016
Dividends Per Ordinary Share					$ 0.195
Total Amount					$ 28,693
Declaration Date, May 4 ,2016 [Member]
Dividends Payable [Line Items]
Declaration Date													May 04, 2016
Record Date													Jun. 30, 2016
Payment Date													Jul. 15, 2016
Dividends Per Ordinary Share						$ 0.195
Total Amount						$ 28,836
Declaration Date, February 2, 2016 [Member]
Dividends Payable [Line Items]
Declaration Date													Feb. 02, 2016
Record Date													Mar. 31, 2016
Payment Date													Apr. 15, 2016
Dividends Per Ordinary Share							$ 0.195
Total Amount							$ 29,206
Declaration Date, November 10, 2015 [Member]
Dividends Payable [Line Items]
Declaration Date													Nov. 10, 2015
Record Date													Dec. 31, 2015
Payment Date													Jan. 15, 2016
Dividends Per Ordinary Share								$ 0.170
Total Amount								$ 25,565
Declaration Date, July 29, 2015 [Member]
Dividends Payable [Line Items]
Declaration Date													Jul. 29, 2015
Record Date													Sep. 30, 2015
Payment Date													Oct. 16, 2015
Dividends Per Ordinary Share									$ 0.170
Total Amount									$ 25,697
Declaration Date, April 29, 2015 [Member]
Dividends Payable [Line Items]
Declaration Date													Apr. 29, 2015
Record Date													Jun. 30, 2015
Payment Date													Jul. 17, 2015
Dividends Per Ordinary Share										$ 0.170
Total Amount										$ 26,127
Declaration Date, January 27, 2015 [Member]
Dividends Payable [Line Items]
Declaration Date													Jan. 27, 2015
Record Date													Mar. 31, 2015
Payment Date													Apr. 16, 2015
Dividends Per Ordinary Share											$ 0.170
Total Amount											$ 26,286
Declaration Date, November 04, 2014 [Member]
Dividends Payable [Line Items]
Declaration Date													Nov. 04, 2014
Record Date													Dec. 31, 2014
Payment Date													Jan. 16, 2015
Dividends Per Ordinary Share												$ 0.155
Total Amount												$ 24,086

X

- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

+ Details

Name:	us-gaap_CommonStockDividendsPerShareDeclared
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Date the declared dividend will be paid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

+ 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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(15)(5))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(24))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(20))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(15)(5))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ 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 CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

+ 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 CCYY-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_DividendDeclarationDateAugustTwoTwoThousandSeventeenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DividendsAxis=dox_DividendDeclarationDateMayNineTwoThousandSeventeenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DividendsAxis=dox_DividendDeclarationDateFebruaryOneTwoThousandSeventeenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DividendsAxis=dox_DividendDeclarationDateNovemberEightTwoThousandSixteenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DividendsAxis=dox_DividendDeclarationDateJulyTwentySixTwoThousandSixteenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DividendsAxis=dox_DividendDeclarationDateMayFourTwoThousandSixteenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DividendsAxis=dox_DividendDeclarationDateFebruaryTwoTwoThousandSixteenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DividendsAxis=dox_DividendDeclarationDateNovemberTenTwoThousandFifteenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DividendsAxis=dox_DividendDeclarationDateJulyTwentyNineTwoThousandFifteenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DividendsAxis=dox_DividendDeclarationDateAprilTwentyNineTwoThousandFifteenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DividendsAxis=dox_DividendDeclarationDateJanuaryTwentySevenTwoThousandFifteenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DividendsAxis=dox_DividendDeclarationDateNovemberFourTwoThousandFourteenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: