Document and Entity Information	3 Months Ended
	Mar. 31, 2015	Apr. 17, 2015
Entity Registrant Name	ERIE INDEMNITY CO
Entity Central Index Key	0000922621
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Class A Common Stock
Entity Common Stock, Shares Outstanding		46,189,068
Class B Common Stock
Entity Common Stock, Shares Outstanding		2,542