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Cover
Aug. 05, 2019
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Aug. 05, 2019
Entity File Number 001-11625
Entity Registrant Name Pentair plc
Entity Central Index Key 0000077360
Entity Tax Identification Number 98-1141328
Entity Incorporation, State or Country Code L2
Entity Address, Address Line One Regal House
Entity Address, Address Line Two 70 London Road
Entity Address, City or Town Twickenham, London
Entity Address, Country GB
Entity Address, Postal Zip Code TW13QS
City Area Code 44
Local Phone Number 74-9421-6154
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Ordinary Shares, nominal value $0.01 per share
Trading Symbol PNR
Security Exchange Name NYSE
Entity Emerging Growth Company false