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v3.8.0.1

Guarantees - Additional Information (Detail) | 12 Months Ended
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Sep. 30, 2017
Maximum |
Product Warranty [Line Items] |
Duration of product warranties | 90 days

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- Definition Product Warranty [Line Items] + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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- Definition Product Warranty Term + References No definition available. + Details
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Namespace Prefix: | fico_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |