Quarterly Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended								12 Months Ended
		Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Condensed Financial Statements, Captions [Line Items]
Revenues	[1]									$ 1,078	$ 969	$ 722
Operating income										(28)	44	64
INCOME (LOSS) FROM CONTINUING OPERATIONS										(232)	969	266
Income from discontinuing operations										450	152	158
Net income (loss)										218	1,121	424
Net income (loss) attributable to NEP										$ 200	$ 477	$ 137
Earnings Per Share, Basic, Assuming Dilution										$ 0.34	$ 5.24	$ 1.34
Earnings Per Share, Basic, Assuming Dilution, Discontinued Operations										$ 1.84	$ 0.38	$ 0.43
Revision of Prior Period, Adjustment
Condensed Financial Statements, Captions [Line Items]
Revenues		$ 232	$ 308	$ 292	$ 245	$ 204	$ 237	$ 302	$ 226
Operating income		(53)	32	26	(35)	(58)	9	95	(2)
INCOME (LOSS) FROM CONTINUING OPERATIONS		(205)	100	56	(182)	(19)	192	502	294
Income from discontinuing operations		$ 353	$ 32	$ 33	$ 31	$ 37	$ 40	$ 36	$ 39
Earnings Per Share, Basic, Continued Operations		$ (0.35)	$ 0.47	$ 0.43	$ (0.23)	$ 0.31	$ 0.83	$ 2.52	$ 1.62
Basic, discontinued (usd per share)		1.55	0.10	0.10	0.06	0.09	0.10	0.09	0.10
Earnings Per Share, Basic, Assuming Dilution		(0.35)	0.47	0.43	(0.23)	0.31	0.82	2.52	1.62
Earnings Per Share, Basic, Assuming Dilution, Discontinued Operations		$ 1.55	$ 0.10	$ 0.10	$ 0.06	$ 0.09	$ 0.11	$ 0.09	$ 0.10

[1] Includes related party revenues of approximately $(12) million, $2 million and $2 million for 2023, 2022 and 2021, respectively. Includes pipeline service revenue of approximately $3 million and $2 million for 2022 and 2021, respectively, related to the pipeline sold in 2022 (see Note 2 – Disposal of Pipeline).