Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Revenue:
License	$ 369,691	$ 344,209	$ 348,394
Service	295,009	294,653	295,342
Support	692,267	654,679	611,943
Total revenue	1,356,967	1,293,541	1,255,679
Cost of revenue:
Cost of license revenue	31,663	33,004	30,595
Cost of service revenue	256,876	258,954	265,483
Cost of support revenue	85,144	81,081	76,050
Total cost of revenue	373,683	373,039	372,128
Gross margin	983,284	920,502	883,551
Sales and marketing	357,447	360,640	377,796
Research and development	226,496	221,918	214,960
General and administrative	142,232	131,937	117,468
Amortization of acquired intangible assets	32,127	26,486	20,303
Restructuring charges	28,406	52,197	24,928
Total operating expenses	786,708	793,178	755,455
Operating income	196,576	127,324	128,096
Foreign currency losses, net	(4,469)	(2,027)	(5,862)
Interest income	3,117	2,862	2,920
Interest expense	(8,155)	(6,976)	(4,746)
Other income (expense), net	(957)	5,051	328
Income before income taxes	186,112	126,234	120,736
Provision (benefit) for income taxes	25,918	(17,535)	156,134
Net income (loss)	$ 160,194	$ 143,769	$ (35,398)
Earnings (loss) per share—Basic (in USD per share)	$ 1.36	$ 1.20	$ (0.30)
Earnings (loss) per share—Diluted (in USD per share)	$ 1.34	$ 1.19	$ (0.30)
Weighted average shares outstanding—Basic (in shares)	118,094	119,473	118,705
Weighted average shares outstanding—Diluted (in shares)	119,984	121,240	118,705