Equity - Basic and Diluted Earnings Per Unit (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Numerator – Net income (loss) attributable to NEP:
Net Income (Loss) From Continuing Operations, Value	$ 70	$ (20)
Net Income (Loss) from Continuing Operations Available to Common Shareholders, Basic	70	(20)
Net Income (Loss) From Discontinued Operations Assuming Dilution, Value	0	6
Net Income (Loss) from Discontinued Operations Available to Common Shareholders, Basic	0	6
Net Income (Loss), Assuming Dilution	70	(14)
Net income (loss) attributable to NEP	$ 70	$ (14)
Denominator:
Weighted-average number of common units outstanding – basic (in shares)	93.5	87.3
Convertible notes and preferred units (in shares)	0.0	0.6
Weighted-average number of common units outstanding – assuming dilution (in shares)	93.5	87.9
Earnings (loss) per common unit attributable to NEP – basic and assuming dilution:
Income (Loss) from Continuing Operations, Per Basic Share	$ 0.75	$ (0.23)
Earnings Per Share, Assuming Dilution, Continuing Operations	0.75	(0.23)
Assuming dilution (in shares)	0	0.06
Basic (in shares)	0.75	(0.17)
Earnings Per Share, Assuming Dilution, Discontinued Operations	0	0.06
Earnings Per Share, Assuming Dilution	$ 0.75	$ (0.17)