Earnings Per Share - Additional Information (Details)	Apr. 30, 2018 shares
Subsequent Events [Abstract]
Equity interests issued per ordinary predecessor share (in shares)	1

Spinoff Transaction, Equity Interests Issued Per Ordinary Predecessor Share

No definition available.

Name:	nvt_SpinoffTransactionEquityInterestsIssuedPerOrdinaryPredecessorShare
Namespace Prefix:	nvt_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration