Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities:
Net income	$ 479,728	$ 426,749
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	190,963	97,453
Share-based compensation	46,340	36,757
Deferred income taxes	(79,558)	(66,525)
Other	(71,476)	(33,442)
Changes in operating assets and liabilities, net:
Accounts receivable	(197,685)	(75,546)
Inventory	(16,980)	(60,809)
Accrued expenses and other current liabilities	(171,368)	(180,910)
Other changes in operating assets and liabilities, net	(75,338)	35,212
Net cash flows provided by operating activities	104,626	178,939
Cash flows from investing activities:
Proceeds from sales and maturities of marketable securities	757,512	4,329,506
Purchases of marketable securities	(666,211)	(1,160,680)
Purchases of reverse repurchase agreements	0	(2,968,000)
Purchases of property, plant and equipment	(54,306)	(33,289)
Acquisitions of business, net of cash acquired	(25,000)	0
Other	(6,002)	(11,596)
Net cash flows provided by investing activities	5,993	155,941
Cash flows from financing activities:
Purchase of treasury stock	0	(41,023)
Proceeds from issuance of stock for share-based compensation arrangements	22,363	21,817
Repayment of borrowings under senior notes	0	(450,000)
Proceeds from borrowings under line of credit facility	0	200,000
Excess tax benefit from stock options	79,456	37,397
Other	13,056	(6,615)
Net cash flows provided by (used in) financing activities	114,875	(238,424)
Net increase (decrease) in cash and cash equivalents	225,494	96,456
Effect of exchange rate changes on cash and cash equivalents	545	(3,875)
Cash and cash equivalents, beginning of the period	602,562	570,721
Cash and cash equivalents, end of the period	$ 828,601	$ 663,302