Contingencies (Details)	3 Months Ended
	Sep. 30, 2013
Product Liability Litigation [Member] | Byetta [Member]
Loss Contingency, Number of Lawsuits	235
Loss Contingency, Number of Plaintiffs	650
Loss Contingency, Number of Claimants	460
Product Liability Litigation [Member] | Diethylstilbestrol (DES) [Member]
Loss Contingency, Number of Lawsuits	10
Loss Contingency, Number of Claimants	10
Product Liability Litigation [Member] | Prozac [Member]
Loss Contingency, Number of Lawsuits	10
Loss Contingency, Number of Claimants	410
Product Liability Litigation [Member] | Damages from Product, Cancer [Member] | Byetta [Member]
Loss Contingency, Number of Lawsuits	150
Loss Contingency, Number of Plaintiffs	210
Product Liability Litigation [Member] | California [Member] | Byetta [Member]
Loss Contingency, Number of Lawsuits	85
Loss Contingency, Number of Plaintiffs	455
Employee Litigation [Member] | Brazil [Member]
Loss Contingency, Number of Lawsuits	30