Consolidated Statements of Comprehensive Income (Loss) (Parentheticals) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Equity method investee, tax	$ 0	$ 0	$ 0

Other Comprehensive Income (Loss), Equity Method Investments Adjustment, Tax

No definition available.

Name:	nep_OtherComprehensiveIncomeLossEquityMethodInvestmentsAdjustmentTax
Namespace Prefix:	nep_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration