Equity (Schedule) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Components of Stockholders Equity [Line Items]
Equity, attributable to Concur, Period start			$ 795,985	$ 704,599
Equity, noncontrolling interest, Period start			221	581
Equity, Period start			796,206	705,180
Investment by noncontrolling interest partners			1,809	619
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract]
Net loss attributable to Concur	(32)	2,815	(80,233)	(16,862)
Net loss, noncontrolling interest	(194)	(231)	(571)	(725)
Net loss	(226)	2,584	(80,804)	(17,587)
Foreign currency translation adjustments, attributable to Concur			2,443	(2,432)
Foreign currency translation adjustments, noncontrolling interest			6	(55)
Foreign currency translation adjustments			2,449	(2,487)
Unrealized loss on available-for-sale investments, net of tax, attributable to Concur			(137)	(37)
Unrealized gain (loss) on available-for-sale investments, net of tax, noncontrolling interest			0	0
Unrealized loss on available-for-sale investments, net of tax			(137)	(37)
Comprehensive income (loss) attributable to Concur	1,218	2,529	(77,927)	(19,331)
Comprehensive loss, noncontrolling interest	(196)	(231)	(565)	(780)
Comprehensive income (loss)	1,022	2,298	(78,492)	(20,111)
Equity component of convertible senior notes, note hedges and warrants				50,064
Share-based transactions and compensation expense			41,171	33,175
Reclassification of equity component of convertible senior notes			10,442	10,468
Repurchase of common stock			(925)	(651)
Equity, attributable to Concur, Period end	768,746	778,324	768,746	778,324
Equity, noncontrolling interest, Period end	1,465	420	1,465	420
Equity, Period end	770,211	778,744	770,211	778,744
Attributable to Concur
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract]
Equity component of convertible senior notes, note hedges and warrants				50,064
Share-based transactions and compensation expense			41,171	33,175
Reclassification of equity component of convertible senior notes			10,442	10,468
Repurchase of common stock			(925)	(651)
Noncontrolling interest
Components of Stockholders Equity [Line Items]
Investment by noncontrolling interest partners			1,809	619
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract]
Equity component of convertible senior notes, note hedges and warrants				0
Share-based transactions and compensation expense			0	0
Reclassification of equity component of convertible senior notes			0	0
Repurchase of common stock			$ 0	$ 0