Contingencies (Details) R$ in Millions, $ in Millions	1 Months Ended					3 Months Ended		157 Months Ended
	Apr. 30, 2022 lawsuit	Jul. 31, 2021 claim	Jun. 30, 2021 BRL (R$) patent	Jul. 31, 2019 BRL (R$)	Jul. 31, 2018 BRL (R$)	Mar. 31, 2022 BRL (R$) lawsuit site claimant	Mar. 31, 2022 USD ($) lawsuit site claimant	Mar. 31, 2022 lawsuit plaintiff site claimant	Sep. 30, 2018 patent
Unfavorable Regulatory Action
Loss Contingencies [Line Items]
Number of sites jointly and severally liable for cleanup (fewer than) | site						10	10	10
Byetta | Product Liability
Loss Contingencies [Line Items]
Number of pending lawsuits						570	570	570
Number of plaintiffs | plaintiff								805
Number of claimants | claimant						20	20	20
Byetta | Product Liability | Subsequent Event
Loss Contingencies [Line Items]
Number of claims dismissed	333
Byetta | Pancreatic Cancer or Thyroid Cancer | Product Liability
Loss Contingencies [Line Items]
Number of pending lawsuits						565	565	565
Number of plaintiffs | plaintiff								800
Byetta | Pancreatitis | Product Liability
Loss Contingencies [Line Items]
Number of plaintiffs | plaintiff								6
Byetta | Ampullary Cancer | Product Liability
Loss Contingencies [Line Items]
Number of plaintiffs | plaintiff								1
Byetta | Los Angeles | Product Liability
Loss Contingencies [Line Items]
Number of pending lawsuits						55	55	55
Number of plaintiffs | plaintiff								285
Byetta | Southern District of California | Product Liability
Loss Contingencies [Line Items]
Number of pending lawsuits						515	515	515
Number of plaintiffs | plaintiff								515
Byetta | Various State Domiciles | Product Liability
Loss Contingencies [Line Items]
Number of pending lawsuits						2	2	2
Number of plaintiffs | plaintiff								2
Byetta | Various State Domiciles | Product Liability | Subsequent Event
Loss Contingencies [Line Items]
Number of claims dismissed	34
Cialis® | Product Liability
Loss Contingencies [Line Items]
Number of pending lawsuits						350	350	350
Jardiance | Product Liability
Loss Contingencies [Line Items]
Number of pending lawsuits						5	5	5
Humalog, Humulin and Forteo
Loss Contingencies [Line Items]
Number of pending lawsuits						2	2	2
Insulin
Loss Contingencies [Line Items]
Number of claims dismissed | claim		3
Emgality Patent Litigation
Loss Contingencies [Line Items]
Number of patents | patent			2						9
Brazil | Employee Litigation
Loss Contingencies [Line Items]
Number of pending lawsuits						27	27	27
Damages awarded, value			R$ 100	R$ 500	R$ 300	R$ 1,000	$ 210