Document and Entity Information	9 Months Ended
	Sep. 27, 2014
Document Information [Line Items]
Entity Registrant Name	PENTAIR plc
Entity Central Index Key	0000077360
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Sep. 27, 2014
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	Q3
Amendment Flag	false
Trading Symbol	PNR
Entity Common Stock, Shares Outstanding	186,794,220