Summary of Significant Accounting and Reporting Policies (Policies)	9 Months Ended
	Sep. 30, 2023
Accounting Policies [Abstract]
Redeemable Noncontrolling Interest	Redeemable Noncontrolling Interests – In connection with the December 2021 acquisition from NEER, NEP recorded redeemable noncontrolling interests of approximately $321 million relating to certain contingencies whereby NEP may have been obligated to either redeem interests of third-party investors in certain projects which were under construction or return proceeds to third-party investors in certain projects. During the three months ended March 31, 2022, the construction of projects was completed which resolved one of the contingencies and the redeemable noncontrolling interests amount related to the completion of the projects was reclassified to noncontrolling interests. During the three months ended September 30, 2022, legislation was enacted establishing a solar PTC, which substantially resolved the contingencies related to the return of proceeds and resulted in $93 million of redeemable noncontrolling interests being reclassified to noncontrolling interests. In connection with the sale of differential membership interests to a third-party investor in December 2022, NEP recorded redeemable noncontrolling interests of approximately $101 million relating to certain contingencies whereby NEP may have been obligated to reacquire all or a portion of the third-party investor's interests in an under construction project. During the three months ending September 30, 2023, the construction of the project was completed which resolved the contingencies and the redeemable noncontrolling interests amount of approximately $105 million was reclassified to noncontrolling interests.
Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy	Restricted Cash – At September 30, 2023 and December 31, 2022, NEP had approximately $49 million and $49 million, respectively, of restricted cash included in current other assets on NEP's condensed consolidated balance sheets. Restricted cash at September 30, 2023 and December 31, 2022 is primarily related to an operating cash reserve. Restricted cash reported as current assets are recorded as such based on the anticipated use of these funds.
Consolidation, Policy	Noncontrolling Interests – At September 30, 2023, noncontrolling interests on NEP's condensed consolidated balance sheets primarily reflect the Class B noncontrolling ownership interests (the Class B noncontrolling ownership interests in NEP Renewables II, NEP Pipelines, STX Midstream, Genesis Holdings, NEP Renewables III and NEP Renewables IV owned by third parties), the differential membership interests, NEE Equity's approximately 51.4% noncontrolling interest in NEP OpCo, NEER's approximately 50% noncontrolling ownership interest in Silver State, NEER's 33% noncontrolling interest in Sunlight Renewables Holdings and NEER's 51% noncontrolling interest in Emerald Breeze (see Note 1), non-affiliated parties' 10% interest in one of the Texas pipelines and 50% interest in Star Moon Holdings and the non-economic ownership interests. The impact of the net income (loss) attributable to the differential membership interests and the Class B noncontrolling ownership interests are allocated to NEE Equity's noncontrolling ownership interest and the net income attributable to NEP based on the respective ownership percentage of NEP OpCo.
Goodwill and Intangible Assets, Goodwill, Policy	Goodwill and Indefinite-Lived Intangible Assets – Goodwill and indefinite-lived intangible assets are assessed for impairment at least annually or whenever an event indicating impairment may have occurred. As a result of the significant decline in trading price of NEP’s common units during the final three trading days of the third quarter of 2023, NEP tested its goodwill for impairment by applying a fair value-based analysis using an assessment date of September 30, 2023 and determined, based on the results, that its goodwill was not impaired. NEP will continue to monitor its goodwill carrying value for future impairments.