Condensed Consolidated Statements of Cash Flows (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Operating activities:
Net income	$ 91,878	$ 59,591
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of intangibles	24,931	27,212
Stock-based compensation expense	24,750	23,298
Excess tax benefits from stock-based compensation	(22,458)	(12,575)
Deferred taxes	3,812	(6,699)
Amortization of debt issue costs	1,733	785
Changes in assets and liabilities:
Fees receivable, net	16,023	15,148
Deferred commissions	11,354	15,685
Prepaid expenses and other current assets	(6,241)	(3,212)
Other assets	2,051	(36,317)
Deferred revenues	74,021	59,811
Accounts payable, accrued, and other liabilities	(45,389)	(16,352)
Cash provided by operating activities	176,465	126,375
Investing activities:
Additions to property, equipment and leasehold improvements	(23,720)	(12,211)
Acquisitions (net of cash received)		(12,151)
Cash used in investing activities	(23,720)	(24,362)
Financing activities:
Proceeds from stock issued under stock plans	17,771	19,380
Proceeds from debt issuance	5,000	27,000
Payments on debt	(15,156)	(56,000)
Purchases of treasury stock	(141,214)	(76,476)
Excess tax benefits from stock-based compensation	22,458	12,575
Cash used by financing activities	(111,141)	(73,521)
Net increase in cash and cash equivalents	41,604	28,492
Effects of exchange rates on cash and cash equivalents	(4,882)	3,346
Cash and cash equivalents, beginning of period	120,181	116,574
Cash and cash equivalents, end of period	$ 156,903	$ 148,412