ACQUISITIONS (Details) (USD $)	3 Months Ended								12 Months Ended			0 Months Ended	12 Months Ended	0 Months Ended				0 Months Ended	12 Months Ended					0 Months Ended	12 Months Ended				0 Months Ended	12 Months Ended			0 Months Ended	12 Months Ended					0 Months Ended
	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011	Dec. 14, 2012 NEK Special Programs Group LLC (NEK)	Sep. 30, 2013 NEK Special Programs Group LLC (NEK)	Dec. 14, 2012 NEK Special Programs Group LLC (NEK) Minimum item	Dec. 14, 2012 NEK Special Programs Group LLC (NEK) Customer relationships	Dec. 14, 2012 NEK Special Programs Group LLC (NEK) Corporate trade names	Dec. 14, 2012 NEK Special Programs Group LLC (NEK) Non-compete agreements	Jan. 24, 2013 Next Bus	Sep. 30, 2013 Next Bus	Jan. 24, 2013 Next Bus Customer relationships	Jan. 24, 2013 Next Bus Corporate trade names	Jan. 24, 2013 Next Bus Acquired technology	Jan. 24, 2013 Next Bus Backlog	Jul. 02, 2013 AIS	Sep. 30, 2013 AIS	Jul. 02, 2013 AIS Customer relationships	Jul. 02, 2013 AIS Acquired technology	Jul. 02, 2013 AIS Backlog	Jul. 02, 2013 PSMC	Sep. 30, 2013 PSMC	Jul. 02, 2013 PSMC Customer relationships	Jul. 02, 2013 PSMC Backlog	Dec. 20, 2010 Abraxas Corporation	Sep. 30, 2013 Abraxas Corporation	Dec. 20, 2010 Abraxas Corporation Customer relationships	Dec. 20, 2010 Abraxas Corporation Corporate trade names	Dec. 20, 2010 Abraxas Corporation Non-compete agreements	Dec. 20, 2010 Abraxas Corporation Backlog	Nov. 26, 2013 ITMS Subsequent event Forecast
Acquisitions
Number of employees hired														200
Net sales	$ 340,776,000	$ 337,226,000	$ 368,609,000	$ 314,796,000	$ 369,255,000	$ 371,142,000	$ 343,830,000	$ 319,857,000	$ 1,361,407,000	$ 1,404,084,000	$ 1,301,584,000		$ 31,600,000						$ 7,800,000						$ 2,000,000					$ 1,700,000
Net loss (income) after taxes	37,152,000	(18,405,000)	(29,702,000)	(14,314,000)	(21,967,000)	(27,448,000)	(25,907,000)	(22,309,000)	(25,269,000)	(97,631,000)	(86,354,000)		500,000						400,000						100,000					(100,000)
Transaction related costs													600,000						200,000
Cost of acquisition net												52,000,000
Fair value of consideration transferred												52,600,000																											70,000,000
Cash consideration paid													48,100,000					20,200,000						2,000,000					1,300,000				126,000,000
Estimated current liability of additional cash consideration													4,500,000
Additional cash consideration accelerated if certain event occurs													1,000,000
Fair value of additional contingent cash consideration													3,500,000
Amount of change in the estimated fair value of the total estimated contingent payments to be made since the date of the acquisition													0
Purchase price allocation
Amortizable intangible assets															13,300,000	4,900,000	200,000			8,800,000	1,000,000	1,300,000	1,700,000			1,400,000	900,000	600,000			600,000	100,000			20,100,000	5,700,000	5,200,000	11,500,000
Recoverable income taxes																																	4,300,000
Accounts receivable - billed												3,100,000
Accounts receivable - unbilled												7,700,000
Accounts receivable, net																		2,200,000
Accounts payable and accrued expenses												(3,000,000)						(1,100,000)
Deferred tax liabilities, net																		(3,300,000)															(7,600,000)
Net tangible assets acquired																																	5,100,000
Other net liabilities assumed												(400,000)						(1,200,000)
Other net assets acquired																								(1,500,000)
Net identifiable assets acquired												25,800,000						9,400,000						1,400,000					700,000				44,300,000
Goodwill	134,851,000	183,895,000	185,589,000	173,734,000	146,933,000	146,597,000	146,812,000	146,413,000	134,851,000	146,933,000	146,355,000	26,800,000						10,800,000						600,000					600,000				81,700,000
Net assets acquired												52,600,000						20,200,000						2,000,000					1,300,000				126,000,000
Weighted average useful life of intangible assets									6 years				4 years																					6 years
Unaudited pro forma information
Net sales									1,385,300,000	1,468,000,000
Net income attributable to Cubic									26,200,000	99,200,000
Adjustments made for transaction expenses									$ 0