Pension Plans And Other Post Retirement Benefits (Schedule Of The Change In The Benefit Obligation Of Defined Benefit Plans) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Jun. 30, 2014
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation-beginning of period	$ 58,802	$ 52,690	$ 52,690
Defined Benefit Plan, Service Cost	542		1,355
Defined Benefit Plan, Interest Cost	456		1,410
Defined Benefit Plan, Benefits Paid	(364)		(1,049)
Defined Benefit Plan, Actuarial Gain (Loss)	4,261		3,229
Defined Benefit Plan, Foreign Currency Exchange Rate Gain (Loss)	(3,480)		1,167
Benefit obligation-end of period	60,217		58,802
Less: current portion	(1,455)		(1,551)
Defined Benefit Pension Plan, Liabilities, Noncurrent	58,762		57,251
CDT Defined Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation-beginning of period	29,344	23,871	23,871
Defined Benefit Plan, Service Cost	122	113	458
Defined Benefit Plan, Interest Cost	199	217	877
Defined Benefit Plan, Benefits Paid	(126)		(522)
Defined Benefit Plan, Actuarial Gain (Loss)	2,481		3,595
Defined Benefit Plan, Foreign Currency Exchange Rate Gain (Loss)	(1,846)		1,065
Benefit obligation-end of period	30,174		29,344
Less: current portion	(595)		(634)
Defined Benefit Pension Plan, Liabilities, Noncurrent	29,579		28,710
GXS Germany defined benefit plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation-beginning of period	24,182	23,637	23,637
Defined Benefit Plan, Service Cost	80	0	173
Defined Benefit Plan, Interest Cost	190	0	408
Defined Benefit Plan, Benefits Paid	(215)		(461)
Defined Benefit Plan, Actuarial Gain (Loss)	1,917		452
Defined Benefit Plan, Foreign Currency Exchange Rate Gain (Loss)	(1,522)		(27)
Benefit obligation-end of period	24,632		24,182
Less: current portion	(860)		(917)
Defined Benefit Pension Plan, Liabilities, Noncurrent	23,772		23,265
GXS Philippines defined benefit plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation-beginning of period	5,276	5,182	5,182
Defined Benefit Plan, Service Cost	340	0	724
Defined Benefit Plan, Interest Cost	67	0	125
Defined Benefit Plan, Benefits Paid	(23)		(66)
Defined Benefit Plan, Actuarial Gain (Loss)	(137)		(818)
Defined Benefit Plan, Foreign Currency Exchange Rate Gain (Loss)	(112)		129
Benefit obligation-end of period	5,411		5,276
Less: current portion	0		0
Defined Benefit Pension Plan, Liabilities, Noncurrent	$ 5,411		$ 5,276