Fair Value Measures and Disclosures (Policies)	3 Months Ended
Mar. 31, 2023
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments, Policy	The fair value of money market funds that are included in cash and cash equivalents, current other assets and noncurrent other assets on NEP's condensed consolidated balance sheets is estimated using a market approach based on current observable market prices.

Disclosure of accounting policy for determining the fair value of financial instruments.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 60
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=7493716&loc=d3e21868-110260

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13279-108611

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