Consolidated Condensed Statements of Cash Flows (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash Flows from Operating Activities
Net income	$ 3,957.3	$ 3,261.3
Adjustments to Reconcile Net Income to Cash Flows from Operating Activities:
Depreciation and amortization	1,094.4	1,117.6
Change in deferred income taxes	(807.6)	(206.2)
Stock-based compensation expense	105.1	100.3
Income related to the termination of the exenatide collaboration	(495.4)	(787.8)
Other changes in operating assets and liabilities, net of acquisitions and divestitures	1,498.3	271.5
Other operating activities, net	37.5	76.7
Net Cash Provided by Operating Activities	4,008.2	3,702.8
Cash Flows from Investing Activities
Net purchases of property and equipment	(548.1)	(492.2)
Proceeds from sales and maturities of short-term investments	2,378.1	2,125.8
Purchases of short-term investments	(778.6)	(1,868.5)
Proceeds from sales and maturities of noncurrent investments	8,482.9	3,557.4
Purchases of noncurrent investments	(10,239.5)	(5,506.8)
Purchase of product rights	0	(102.0)
Cash paid for acquisitions, net of cash acquired	(43.7)	(199.3)
Net change in loan to collaboration partner	0	165.0
Proceeds from prepayment of revenue-sharing obligation	0	1,212.1
Other investing activities, net	(91.5)	(61.8)
Net Cash Used for Investing Activities	(840.4)	(1,170.3)
Cash Flows from Financing Activities
Dividends paid	(1,591.8)	(1,639.2)
Net change in short-term borrowings	0	(6.7)
Repayment of long-term debt	(3.0)	(1,508.5)
Purchases of common stock	(1,198.1)	0
Net Cash Used for Financing Activities	(2,792.9)	(3,154.4)
Effect of exchange rate changes on cash and cash equivalents	(24.8)	18.6
Net increase (decrease) in cash and cash equivalents	350.1	(603.3)
Cash and cash equivalents at January 1	4,018.8	5,922.5
Cash and Cash Equivalents at September 30	$ 4,368.9	$ 5,319.2