Consolidated Income Statements (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Net revenues
Products	$ 196,746	$ 207,118	$ 586,565	$ 608,837
Services	173,556	145,516	499,420	405,851
Total	370,302	352,634	1,085,985	1,014,688
Cost of net revenues
Products	32,350	34,482	93,915	101,350
Services	32,567	25,805	92,189	72,137
Total	64,917	60,287	186,104	173,487
Gross profit	305,385	292,347	899,881	841,201
Operating expenses
Sales and marketing	121,906	112,064	363,205	329,297
Research and development	54,075	46,985	155,150	129,675
General and administrative	25,327	23,298	75,889	67,760
Total	201,308	182,347	594,244	526,732
Income from operations	104,077	110,000	305,637	314,469
Other income, net	2,874	1,713	6,542	5,002
Income before income taxes	106,951	111,713	312,179	319,471
Provision for income taxes	38,773	39,377	111,096	112,002
Net income	$ 68,178	$ 72,336	$ 201,083	$ 207,469
Net income per share — basic (dollars per share)	$ 0.87	$ 0.91	$ 2.56	$ 2.62
Weighted average shares — basic (shares)	78,516	79,135	78,636	79,188
Net income per share — diluted (dollars per share)	$ 0.86	$ 0.91	$ 2.54	$ 2.60
Weighted average shares — diluted (shares)	78,864	79,655	79,207	79,834