Consolidated Condensed Statements of Cash Flows (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash Flows from Operating Activities
Net income	$ 1,548,000,000	$ 1,011,100,000
Adjustments to Reconcile Net Income to Cash Flows from Operating Activities:
Depreciation and amortization	381,500,000	385,900,000
Changes in deferred income taxes	(51,000,000)	132,100,000
Stock-based compensation expense	35,200,000	30,900,000
Income related to transfer of exenatide rights	(495,400,000)	0
Other changes in operating assets and liabilities, net of acquisitions and divestitures	(1,048,100,000)	(698,700,000)
Other operating activities, net	9,200,000	(8,800,000)
Net Cash Provided by Operating Activities	379,400,000	852,500,000
Cash Flows from Investing Activities
Net purchases of property and equipment	(157,900,000)	(130,700,000)
Proceeds from sales and maturities of short-term investments	1,607,500,000	1,070,500,000
Purchases of short-term investments	(313,100,000)	(612,900,000)
Proceeds from sales and maturities of noncurrent investments	2,098,400,000	1,423,200,000
Purchases of noncurrent investments	(1,861,400,000)	(2,156,100,000)
Purchase of product rights	0	(33,600,000)
Cash paid for acquisitions, net of cash acquired	0	(195,400,000)
Other investing activities, net	(18,400,000)	(17,300,000)
Net Cash Provided by (Used for) Investing Activities	1,355,100,000	(652,300,000)
Cash Flows from Financing Activities
Dividends paid	(531,100,000)	(544,600,000)
Net change in short-term borrowings	0	(5,300,000)
Repayment of long-term debt	(900,000)	(1,507,100,000)
Purchases of common stock	(1,198,100,000)	0
Net Cash Used for Financing Activities	(1,730,100,000)	(2,057,000,000)
Effect of exchange rate changes on cash and cash equivalents	(86,600,000)	56,500,000
Net decrease in cash and cash equivalents	(82,200,000)	(1,800,300,000)
Cash and cash equivalents at January 1	4,018,800,000	5,922,500,000
Cash and Cash Equivalents at March 31	$ 3,936,600,000	$ 4,122,200,000