XML 84 R68.htm IDEA: XBRL DOCUMENT
v3.23.3

Derivative Financial Instruments - Changes in Net Unrealized Gains (Losses) on Cash Flow Hedges (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract] |  |  |
Net unrealized gain (loss) on cash flow hedges, net of tax, beginning of period | $ (46,580) | $ 13,773 | $ 18,836
Changes in fair value of cash flow hedges, net of tax | (32,655) | (75,226) | 24,239
Reclassification of (losses) gains into earnings, net of tax | 44,558 | 14,873 | (29,302)
Net unrealized (losses) gains on cash flow hedges, net of tax, end of period | $ (34,677) | $ (46,580) | $ 13,773

X
- Definition Other comprehensive income loss in net gain loss from cash flow hedges net of tax. + References No definition available. + Details
Name: | dox_OtherComprehensiveIncomeLossInNetGainLossFromCashFlowHedgesNetOfTax
Namespace Prefix: | dox_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Reclassification of (losses) gains into earnings, net of tax + References No definition available. + Details
Name: | dox_ReclassificationOfLossesGainsIntoEarningsNetOfTax
Namespace Prefix: | dox_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, after tax and before adjustments, of gain (loss) from increase (decrease) in value of excluded component of derivative designated and qualifying as hedge. Adjustments include, but are not limited to, reclassifications for sale and settlement, and amounts recognized under systematic and rational method. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 11 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482790/220-10-45-11 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480627/815-20-45-3 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 10A -Subparagraph (dd) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482790/220-10-45-10A Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4C -Subparagraph (bb) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4C + Details
Name: | us-gaap_OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseBeforeAdjustmentsAfterTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration