Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Revenue:
License	$ 344,209	$ 348,394	$ 342,121
Service	294,653	295,342	267,150
Support	654,679	611,943	557,678
Total revenue	1,293,541	1,255,679	1,166,949
Cost of revenue:
Cost of license revenue	33,004	30,595	28,792
Cost of service revenue	258,954	265,483	260,650
Cost of support revenue	81,081	76,050	67,326
Total cost of revenue	373,039	372,128	356,768
Gross margin	920,502	883,551	810,181
Sales and marketing	360,640	377,796	353,051
Research and development	221,918	214,960	211,406
General and administrative	131,937	117,468	110,291
Amortization of acquired intangible assets	26,486	20,303	18,319
Restructuring charges	52,197	24,928	0
Total operating expenses	793,178	755,455	693,067
Operating income	127,324	128,096	117,114
Foreign currency losses, net	(2,027)	(5,862)	(12,293)
Interest income	2,862	2,920	3,844
Interest expense	6,976	4,746	3,310
Other income (expense), net	5,051	328	(807)
Income before income taxes	126,234	120,736	104,548
(Benefit) provision for income taxes	(17,535)	156,134	19,124
Net income (loss)	$ 143,769	$ (35,398)	$ 85,424
Earnings (loss) per share—Basic (in USD per share)	$ 1.20	$ (0.30)	$ 0.73
Earnings (loss) per share—Diluted (in USD per share)	$ 1.19	$ (0.30)	$ 0.71
Weighted average shares outstanding—Basic (in shares)	119,473	118,705	117,579
Weighted average shares outstanding—Diluted (in shares)	121,240	118,705	120,974