Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Operating Activities:
Net income	$ 2,127,300	$ 2,263,384
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation expense	53,232	49,375
Amortization expense	175,575	138,585
Stock-based compensation expenses	145,775	146,690
Excess tax benefits from stock-based compensation	(30,255)	(68,642)
Tax benefits from employee stock plans	26,574	69,940
Deferred income taxes	43,415	42,720
Other non-cash transactions	47,159	(19,621)
Changes in operating assets and liabilities:
Accounts receivable, net	(221,393)	(352,081)
Inventories	(136,684)	(228,263)
Prepaid expenses and other assets	13,373	(5,818)
Accounts payable	257,805	141,692
Income taxes payable	85,177	(135,499)
Accrued liabilities	106,492	97,115
Deferred revenues	(32,642)	(30,507)
Net cash provided by operating activities	2,660,903	2,109,070
Investing Activities:
Purchases of marketable securities	(4,161,322)	(3,800,280)
Proceeds from sales of marketable securities	3,498,720	1,808,222
Proceeds from maturities of marketable securities	506,513	591,646
Acquisitions, net of cash acquired	(588,608)	(91,000)
Capital expenditures and other	(105,794)	(38,523)
Net cash used in investing activities	(850,491)	(1,529,935)
Financing Activities:
Proceeds from issuances of senior notes, net of issuance costs	987,370
Proceeds from issuances of convertible notes, net of issuance costs		2,462,500
Proceeds from sale of warrants		155,425
Purchases of convertible note hedges		(362,622)
Proceeds from issuances of common stock	158,234	166,826
Proceeds from credit facility		500,000
Repayments of credit facility		(500,000)
Repurchases of common stock	(2,156,830)	(3,407,055)
Repayment of convertible senior notes	(649,987)
Repayments of other long-term obligations	(1,619)	(5,589)
Excess tax benefits from stock-based compensation	30,255	68,642
Distributions (to) from noncontrolling interest	(130,474)	42,819
Net cash used in financing activities	(1,763,051)	(879,054)
Effect of exchange rate changes on cash	(45,881)	49,954
Net change in cash and cash equivalents	1,480	(249,965)
Cash and cash equivalents at beginning of period	907,879	1,272,958
Cash and cash equivalents at end of period	$ 909,359	$ 1,022,993