CONSOLIDATED STATEMENT OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2011	Mar. 31, 2010
Cash flows from operating activities attributable to continuing operations:
Net earnings (loss)	$ 18,220	$ (19,324)
Less: loss from discontinued operations, net of tax	1,948	4,727
Earnings (loss) from continuing operations	20,168	(14,597)
Adjustments to reconcile earnings (loss) from continuing operations to net cash provided by operating activities attributable to continuing operations:
Depreciation	13,439	15,793
Amortization of intangibles	2,457	3,174
Non-cash compensation expense	20,161	21,545
Deferred income taxes	6,374	6,816
Equity in losses of unconsolidated affiliates	1,879	22,613
Gain on sales of investments	(846)	(3,989)
Changes in current assets and liabilities:
Accounts receivable	(13,711)	(12,129)
Other current assets	(1,008)	(2,955)
Accounts payable and other current liabilities	(13,714)	4,816
Income taxes payable	(195)	6,997
Deferred revenue	14,263	6,544
Other, net	4,625	1,920
Net cash provided by operating activities attributable to continuing operations	53,892	56,548
Cash flows from investing activities attributable to continuing operations:
Acquisitions, net of cash acquired	(48,269)	(9,759)
Capital expenditures	(8,294)	(11,490)
Proceeds from sales and maturities of marketable debt securities	190,936	195,665
Purchases of marketable debt securities	(98,484)	(284,933)
Proceeds from sales of investments	7,829	5,325
Purchases of long-term investments	(604)	(213)
Other, net	40	(2,371)
Net cash provided by (used in) investing activities attributable to continuing operations	43,154	(107,776)
Cash flows from financing activities attributable to continuing operations:
Purchase of treasury stock		(246,154)
Issuance of common stock, net of withholding taxes	(1,081)	2,471
Excess tax benefits from stock-based awards	9,680	4,800
Other, net	20
Net cash provided by (used in) financing activities attributable to continuing operations	8,619	(238,883)
Total cash provided by (used in) continuing operations	105,665	(290,111)
Net cash used in activities attributable to discontinued operations	(1,047)	(386)
Effect of exchange rate changes on cash and cash equivalents	1,878	(3,228)
Net increase (decrease) in cash and cash equivalents	106,496	(293,725)
Cash and cash equivalents at beginning of period	742,099	1,245,997
Cash and cash equivalents at end of period	$ 848,595	$ 952,272