Acquisitions (Details) (USD $)	3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		0 Months Ended	1 Months Ended	3 Months Ended	6 Months Ended				0 Months Ended	1 Months Ended	3 Months Ended	6 Months Ended						0 Months Ended	3 Months Ended			6 Months Ended		12 Months Ended				0 Months Ended	3 Months Ended	6 Months Ended					0 Months Ended	3 Months Ended	6 Months Ended				0 Months Ended	3 Months Ended	6 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014 Transportation Systems	Mar. 31, 2013 Transportation Systems	Mar. 31, 2014 Transportation Systems	Mar. 31, 2013 Transportation Systems	Mar. 31, 2014 Defense Systems	Mar. 31, 2013 Defense Systems	Mar. 31, 2014 Defense Systems	Mar. 31, 2013 Defense Systems	Mar. 31, 2014 Mission Support Services	Mar. 31, 2013 Mission Support Services	Mar. 31, 2014 Mission Support Services	Mar. 31, 2013 Mission Support Services	Feb. 28, 2014 Intific Inc.	Feb. 28, 2014 Intific Inc.	Mar. 31, 2014 Intific Inc.	Mar. 31, 2014 Intific Inc.	Feb. 28, 2014 Intific Inc. Customer relationships	Feb. 28, 2014 Intific Inc. Technology	Feb. 28, 2014 Intific Inc. Backlog	Nov. 26, 2013 ITMS	Nov. 30, 2013 ITMS	Mar. 31, 2014 ITMS	Mar. 31, 2014 ITMS	Nov. 26, 2013 ITMS Customer relationships	Nov. 26, 2013 ITMS Intellectual property	Nov. 26, 2013 ITMS Backlog	Nov. 26, 2013 ITMS Supplier relationships	Nov. 26, 2013 ITMS Agreements with Seller	Dec. 14, 2012 NEK Special Programs Group LLC (NEK)	Mar. 31, 2014 NEK Special Programs Group LLC (NEK)	Mar. 31, 2013 NEK Special Programs Group LLC (NEK)	Dec. 31, 2012 NEK Special Programs Group LLC (NEK)	Mar. 31, 2014 NEK Special Programs Group LLC (NEK)	Mar. 31, 2013 NEK Special Programs Group LLC (NEK)	Mar. 31, 2014 NEK Special Programs Group LLC (NEK)	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	Mar. 31, 2014 Next Bus	Mar. 31, 2014 Next Bus	Jan. 24, 2013 Next Bus Customer relationships	Jan. 24, 2013 Next Bus Corporate trade names	Jan. 24, 2013 Next Bus Technology	Jan. 24, 2013 Next Bus Backlog	Jul. 02, 2013 AIS	Mar. 31, 2014 AIS	Mar. 31, 2014 AIS	Jul. 02, 2013 AIS Customer relationships	Jul. 02, 2013 AIS Technology	Jul. 02, 2013 AIS Backlog	Jul. 02, 2013 PSMC	Mar. 31, 2014 PSMC	Mar. 31, 2014 PSMC	Mar. 31, 2014 PSMC Transportation Systems	Mar. 31, 2014 PSMC Defense Systems	Mar. 31, 2014 PSMC Mission Support Services	Sep. 30, 2013 PSMC Mission Support Services	Jul. 02, 2013 PSMC Customer relationships	Jul. 02, 2013 PSMC Backlog
Acquisitions
Net sales	$ 354,492,000	$ 368,609,000	$ 661,629,000	$ 683,405,000	$ 149,000,000	$ 142,400,000	$ 276,100,000	$ 263,600,000	$ 104,800,000	$ 103,900,000	$ 185,600,000	$ 183,900,000	$ 100,700,000	$ 122,200,000	$ 199,900,000	$ 235,600,000			$ 800,000							$ 12,600,000	$ 17,300,000							$ 8,900,000	$ 9,100,000		$ 19,600,000	$ 9,600,000						$ 2,500,000	$ 4,700,000						$ 1,800,000	$ 3,100,000					$ 500,000	$ 1,200,000
Net income (loss) after taxes	16,120,000	29,702,000	24,549,000	44,016,000															(2,100,000)							(200,000)	(700,000)							(300,000)	(300,000)		(400,000)	(300,000)						(100,000)	(500,000)						(100,000)	(400,000)					(100,000)	(300,000)
Transaction and acquisition related costs																			200,000							100,000	500,000									400,000
Compensation expense paid																			3,100,000
Cost of acquisition net																	12,600,000							69,000,000									52,000,000
Fair value of consideration transferred																	12,900,000							72,300,000									52,600,000
Cash consideration paid																		10,700,000							69,000,000												49,600,000						20,200,000							2,000,000						1,300,000
Estimated current liability of additional cash consideration																	2,200,000	2,200,000							3,300,000									3,000,000			3,000,000		3,000,000
Additional cash consideration accelerated if certain event occurs																																					600,000
Fair value of additional contingent cash consideration																																		2,400,000			2,400,000		2,400,000											1,300,000
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																					2,000,000	700,000	700,000					15,700,000	1,600,000	5,700,000	600,000	1,300,000								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
Other intangible assets																	200,000	200,000
Accounts receivable - billed																								4,400,000									3,100,000
Accounts receivable - unbilled																								6,900,000									7,700,000
Accounts receivable, net																	1,500,000	1,500,000																									2,200,000
Accounts payable and accrued expenses																	(600,000)	(600,000)						(4,600,000)									(3,000,000)										(1,100,000)							(1,300,000)
Deferred tax liabilities, net																	(500,000)	(500,000)						(200,000)																			(3,300,000)
Deferred revenue																								(2,400,000)
Other net liabilities assumed																																	(400,000)										(1,200,000)							(2,800,000)
Other net assets acquired																	600,000	600,000						2,600,000
Net identifiable assets acquired																	4,600,000	4,600,000						31,600,000									25,800,000										9,400,000							100,000						700,000
Goodwill	186,808,000		186,808,000														8,300,000	8,300,000						40,700,000									26,800,000										10,800,000							1,900,000						600,000	186,900,000	186,900,000	60,400,000	32,100,000	94,400,000	94,400,000
Net assets acquired																	12,900,000	12,900,000						72,300,000									52,600,000										20,200,000							2,000,000						1,300,000
Weighted average useful life of intangible assets																				2 years							2 years										4 years								5 years
Estimated amortization expense related to the intangible assets
2014																	600,000	600,000						7,400,000									3,400,000										1,600,000
2015																	900,000	900,000						6,800,000									2,900,000										1,500,000
2016																	700,000	700,000						5,400,000									2,400,000										1,400,000
2017																	600,000	600,000						3,900,000									1,900,000										1,300,000
2018																	500,000	500,000						1,900,000									1,400,000										1,200,000
Changes in the carrying amount of goodwill
Balance at the beginning of the period			136,094,000																																																							136,100,000	18,300,000	23,400,000	94,400,000	94,400,000
Acquisitions																																																										49,000,000	40,700,000	8,300,000
Foreign currency exchange rate changes																																																										1,800,000	1,400,000	400,000
Balance at the end of the period	186,808,000		186,808,000														8,300,000	8,300,000						40,700,000									26,800,000										10,800,000							1,900,000						600,000	186,900,000	186,900,000	60,400,000	32,100,000	94,400,000	94,400,000
Unaudited pro forma information
Net sales	356,800,000	393,000,000	674,300,000	744,600,000
Net income attributable to Cubic	15,600,000	29,500,000	24,100,000	48,000,000
Adjustments made for transaction expenses			$ 0