Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Sep. 30, 2011
ASSETS
Cash and cash equivalents	$ 238,047	$ 167,878
Accounts receivable, net of allowance for doubtful accounts of $3,417 and $3,902 at June 30, 2012 and September 30, 2011, respectively	203,261	230,220
Prepaid expenses	30,065	30,582
Other current assets	82,487	109,433
Deferred tax assets	54,111	54,151
Total current assets	607,971	592,264
Property and equipment, net	61,849	62,569
Goodwill	606,782	613,394
Acquired intangible assets, net	192,959	222,017
Deferred tax assets	112,338	98,064
Other assets	29,562	41,374
Total assets	1,611,461	1,629,682
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	17,778	16,974
Accrued expenses and other current liabilities	51,530	60,167
Accrued compensation and benefits	95,763	95,980
Accrued income taxes	5,505	11,895
Deferred tax liabilities	679	4,440
Deferred revenue	311,040	279,935
Total current liabilities	482,295	469,391
Revolving credit facility	140,000	200,000
Deferred tax liabilities	23,987	25,919
Deferred revenue	12,756	14,389
Other liabilities	89,420	97,293
Total liabilities	748,458	806,992
Commitments and contingencies (Note 13)
Stockholders' equity:
Preferred stock, $0.01 par value; 5,000 shares authorized; none issued	0	0
Common stock, $0.01 par value; 500,000 shares authorized; 118,794 and 116,937 shares issued and outstanding at June 30, 2012 and September 30, 2011, respectively	1,188	1,169
Additional paid-in capital	1,803,945	1,805,021
Accumulated deficit	(870,149)	(918,736)
Accumulated other comprehensive loss	(71,981)	(64,764)
Total stockholders' equity	863,003	822,690
Total liabilities and stockholders' equity	$ 1,611,461	$ 1,629,682