Document and Entity Information - shares	9 Months Ended
	Oct. 01, 2016	Nov. 04, 2016
Document and Entity Information [Abstract]
Entity registrant name	PERRIGO CO PLC
Entity central index key	0001585364
Current calendar year end date	--12-31
Entity filer category	Large Accelerated Filer
Document type	10-Q/A
Document period end date	Oct. 01, 2016
Document calendar year focus	2016
Document calendar period focus	Q3
Amendment flag	true
Amendment description	In connection with our year-end financial statement close and preparation of our Form 10-K for 2016, misstatements were identified in certain of our previous financial statements.
Entity common stock, shares outstanding		143,374,427