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Segment Information (Revenue And Operating Income) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2015
Revenue |  | $ 1,164,039 | $ 1,140,533 | $ 1,255,242
Cost of Revenue |  | 329,019 | 325,665 | 334,734
Gross Profit |  | 835,020 | 814,868 | 920,508
Unallocated Operating Expennses | [1] | 689,413 | 666,028 | 723,780
Operating income |  | 40,898 | (37,014) | 41,616
Other income (expense), net |  | 42,304 | 30,178 | 15,091
Restructuring charges |  | 7,942 | 76,273 | 43,409
Income before income taxes |  | (1,406) | (67,192) | 26,525
Depreciation and amortization |  | 86,742 | 86,554 | 84,433
Solutions Group [Member] |  |  |  |
Revenue |  | 893,606 | 871,225 | 980,274
Cost of Revenue |  | 184,160 | 186,174 | 224,042
Gross Profit |  | 709,446 | 685,051 | 756,232
Depreciation and amortization |  | 5,400 | 5,400 | 5,600
Technology Platform Group [Member] |  |  |  |
Revenue |  | 93,710 | 72,371 | 49,249
Cost of Revenue |  | 96,535 | 83,747 | 28,998
Gross Profit |  | (2,825) | (11,376) | 20,251
Depreciation and amortization |  | 1,500 | 1,600 | 1,000
Professional Services [Member] |  |  |  |
Revenue |  | 176,723 | 196,937 | 225,719
Cost of Revenue |  | 145,091 | 165,325 | 193,397
Gross Profit |  | 31,632 | 31,612 | 32,322
Depreciation and amortization |  | 1,800 | 2,000 | 2,200
Total Segments [Member] |  |  |  |
Revenue |  | 1,164,039 | 1,140,533 | 1,255,242
Cost of Revenue |  | 425,786 | 435,246 | 446,437
Gross Profit |  | 738,253 | 705,287 | 808,805
Unallocated [Member] |  |  |  |
Depreciation and amortization |  | $ 19,300 | $ 19,700 | $ 20,100
[1] | The Solutions Group segment includes depreciation of $5.4 million, $5.4 million and $5.6 million in 2017, 2016 and 2015, respectively. The IoT Group segment includes depreciation of $1.5 million, $1.6 million and $1.0 million in 2017, 2016 and 2015, respectively. The Professional Services segment includes depreciation of $1.8 million, $2.0 million and $2.2 million in 2017, 2016 and 2015, respectively. Unallocated departments include depreciation of $19.3 million, $19.7 million and $20.1 million in 2017, 2016 and 2015, respectively.

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