Segment Information (Revenue And Operating Income) (Details) - USD ($) $ in Thousands		12 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Revenue		$ 1,140,533	$ 1,255,242	$ 1,356,967
Cost of Revenue		325,665	334,734	373,683
Gross Profit		814,868	920,508	983,284
Total Segment Cost of Revenue		435,246	446,437	490,243
Segment Gross Profit		705,287	808,805	866,724
Unallocated Operating Expennses	[1]	666,028	723,780	641,742
Operating income		(37,014)	41,616	196,576
Other income (expense), net		30,178	15,091	10,464
Restructuring charges		76,273	43,409	28,406
Income before income taxes		(67,192)	26,525	186,112
Depreciation and amortization		86,554	84,433	77,307
Solutions Group [Member]
Revenue		871,225	980,274	1,073,426
Cost of Revenue		186,174	224,042	244,020
Gross Profit		685,051	756,232	829,406
Depreciation and amortization		5,400	5,600	5,700
Technology Platform Group [Member]
Revenue		72,371	49,249	4,815
Cost of Revenue		83,747	28,998	8,534
Gross Profit		(11,376)	20,251	(3,719)
Depreciation and amortization		1,600	1,000	100
Professional Services [Member]
Revenue		196,937	225,719	278,726
Cost of Revenue		165,325	193,397	237,689
Gross Profit		31,612	32,322	41,037
Depreciation and amortization		2,000	2,200	2,300
Unallocated [Member]
Depreciation and amortization		$ 19,700	$ 20,100	$ 19,000

[1] The Solutions Group segment includes depreciation of $5.4 million, $5.6 million and $5.7 million in 2016, 2015 and 2014, respectively. The IoT Group segment includes depreciation of $1.6 million, $1.0 million and $0.1 million in 2016, 2015 and 2014, respectively. The Professional Services segment includes depreciation of $2.0 million, $2.2 million and $2.3 million in 2016, 2015 and 2014, respectively. Unallocated departments includes depreciation of $19.7 million, $20.1 million and $19.0 million in 2016, 2015 and 2014, respectively.