Document and Entity Information	3 Months Ended
	Mar. 31, 2012	Apr. 30, 2012
Document And Entity Information [Abstract]
Document type	10-Q
Document period end date	Mar. 31, 2012
Amendment flag	false
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q1
Entity registrant name	PARTNERRE LTD.
Entity central index key	0000911421
Entity current reporting status	Yes
Entity voluntary filers	No
Current fiscal year end date	--12-31
Entity filer category	Large Accelerated Filer
Entity well known seasoned issuer	Yes
Entity common stock shares outstanding		64,549,639