Document and Entity Information	6 Months Ended
	Jun. 30, 2017 shares
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	Jun. 30, 2017
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q2
Amendment Flag	false
Trading Symbol	PNR
Entity Common Stock, Shares Outstanding	181,479,171