Equity and Comprehensive Income (Loss) (Details) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Equity beginning balance	$ 696,540	$ 557,751	$ 637,826	$ 520,802
Initial investment by noncontrolling interest partners			1,225
Net income (loss)	2,227	3,634	3,216	16,785
Foreign currency translation adjustment	944	(3,084)	2,364	(5,589)
Net unrealized gain (loss) on investments, net of tax	3	(17)	22	(15)
Total comprehensive income (loss)	3,174	533	5,602	11,181
Equity component of Senior Convertible Notes, net		3,508		23,044
Share-based transactions and compensation expense	7,151	10,207	62,212	16,972
Equity ending balance	706,865	571,999	706,865	571,999
Attributable to Concur
Equity beginning balance	695,372	557,751	637,826	520,802
Net income (loss)	2,266	3,634	3,288	16,785
Foreign currency translation adjustment	909	(3,084)	2,353	(5,589)
Net unrealized gain (loss) on investments, net of tax	3	(17)	22	(15)
Total comprehensive income (loss)	3,178	533	5,663	11,181
Equity component of Senior Convertible Notes, net		3,508		23,044
Share-based transactions and compensation expense	7,151	10,207	62,212	16,972
Equity ending balance	705,701	571,999	705,701	571,999
Noncontrolling Interest [Member]
Equity beginning balance	1,168
Initial investment by noncontrolling interest partners			1,225
Net income (loss)	(39)		(72)
Foreign currency translation adjustment	35		11
Net unrealized gain (loss) on investments, net of tax
Total comprehensive income (loss)	(4)		(61)
Equity component of Senior Convertible Notes, net
Share-based transactions and compensation expense
Equity ending balance	$ 1,164		$ 1,164