Condensed Consolidated Statements of Operations and Comprehensive Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income Statement [Abstract]
Changes in cumulative translation adjustment inclusive of divestiture of business reclassified to gain from sale	$ 0.0	$ 0.0	$ 0.0	$ 374.2

Changes in Cumulative translation adjustment inclusive of divestiture of business reclassified to gain from sale

No definition available.

Name:	pnr_ChangesinCumulativetranslationadjustmentinclusiveofdivestitureofbusinessreclassifiedtogainfromsale
Namespace Prefix:	pnr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration