Represents the number of transit customers included in a lawsuit brought against the Company.

No definition available.

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Namespace Prefix:	cub_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of judgment or settlement awarded to (against) the entity in respect of litigation.

+ References

No definition available.

+ Details

Name:	us-gaap_LitigationSettlementAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- 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_LossContingenciesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The cash inflow from the amounts received by the insured under the terms of an insurance contract settlement. This element pertains only to insurance proceeds related to operating activities. It excludes insurance settlements classified as investing cash flows, for example, insurance settlements related to fixed assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 16

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3337-108585

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_LossContingenciesByNatureOfContingencyAxis=cub_LawsuitFiledInFederalCourtAgainstTransitCustomersAllegingBreachOfContractMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LossContingenciesByNatureOfContingencyAxis=cub_ClaimForReimbursementOfExpensesIncurredForProposalPreparedForProspectiveCustomerOfTransportationSystemsBusinessMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LossContingenciesByNatureOfContingencyAxis=cub_CustomerClaimsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

LEGAL MATTERS (Details) $ in Millions	1 Months Ended	4 Months Ended	12 Months Ended
LEGAL MATTERS (Details) $ in Millions	Jan. 31, 2015 USD ($)	Jan. 31, 2014 item	Sep. 30, 2015 USD ($)
Lawsuit filed in federal court against the transit customers alleging breach of contract
Legal Matters
Number of transit customers included as defendants in lawsuit \| item		1
Claim for the reimbursement of expenses incurred for a proposal prepared for a prospective customer of transportation systems business
Legal Matters
Litigation settlement	$ 3.6
Customer claims
Legal Matters
Insurance proceeds			$ 1.1