Document and Entity Information (USD $)	12 Months Ended
	Sep. 30, 2013	Apr. 28, 2014	Mar. 31, 2013
Document and Entity Information
Entity Registrant Name	CUBIC CORP /DE/
Entity Central Index Key	0000026076
Document Type	10-K/A
Document Period End Date	Sep. 30, 2013
Amendment Flag	true
Amendment Description	This Annual Report on Form 10-K of Cubic Corporation (?Company?, ?we?, ?us?) for the fiscal year ended September 30, 2012, includes restatement of the following previously filed consolidated financial statements and data (and related disclosures): (1) our Consolidated Balance Sheets as of September 30, 2011, 2010 and 2009 and the related consolidated statements of income, shareholders? equity and cash flows for each of the fiscal years ended September 30, 2011, 2010 and 2009; (2) our selected financial data as of, and for our fiscal years ended, September 30, 2011, 2010, 2009 and 2008, contained in Item 6 of this Form 10-K; (3) our management?s discussion and analysis of financial condition and results of operations as of and for our fiscal years ended September 30, 2011, 2010 and 2009, located in Item 7 of this Form 10-K; and (4) our unaudited quarterly financial information for each quarter in our fiscal years ended September 30, 2011 and 2010, and for the quarterly periods ended March 31, 2012 and December 31, 2011, in Note 18 ?Summary of Quarterly Results of Operations (Unaudited)? of the Notes to Consolidated Financial Statements, located in Item 8 of this Form 10-K. The restatement results from our review of revenue recognition practices. See below and Note 2, ?Restatement of Consolidated Financial Statements? of the Notes to Consolidated Financial Statements in Item 8 of this Form 10-K for a detailed discussion of the review and effect of the restatement. We are filing this Annual Report on Form 10-K concurrently with our delayed quarterly report on Form 10-Q for the quarter ended June 30, 2012, which was delayed due to the restatement. Financial information included in the reports on Form 10-K, Form 10-Q and Form 8-K filed by us prior to July 31, 2012, and all earnings press releases and similar communications issued by us prior to July 31, 2012, should not be relied upon and are superseded in their entirety by this Annual Report on Form 10-K.
Current Fiscal Year End Date	--09-30
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float			$ 717,683,187
Entity Common Stock, Shares Outstanding		26,788,525
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	FY