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Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025	Dec. 31, 2025
Related Party Transaction [Line Items]
Due from related parties	$ 66		$ 66		$ 93
Accounts payable and accrued expenses	55		55		58
NextEra Energy, Inc. [Member] \| Management Services Agreement [Member]
Related Party Transaction [Line Items]
Expenses from transactions with related party	3	$ 3	7	$ 7
NEER \| Emerald Breeze Holdings
Related Party Transaction [Line Items]
Notes payable	(90)		(90)		(90)
NEER \| O&M Agreements and ASAs
Related Party Transaction [Line Items]
Capitalized Cost, Related Party	26	296	77	820
NEER \| Cash Sweep and Credit Support Agreement [Member]
Related Party Transaction [Line Items]
Expenses from transactions with related party	2	2	7	$ 8
True-Up Amount, Related Party		$ 11
Due from related parties	4		$ 4		11
XPLR OpCo \| NextEra Energy, Inc. [Member] \| Management Services Agreement [Member]
Related Party Transaction [Line Items]
Management fee, percent of EBITDA			1.00%
Annual management fee			$ 4
Related Party Transaction, Additional Management Fee, Threshold, Prior Year EBITDA			4
NEER \| Repowering Wind Prjects
Related Party Transaction [Line Items]
Due to related parties	35		$ 35		23
Payables Instrument Average Term			165 days
Accounts payable and accrued expenses	40		$ 40
Due to related parties	39		39		$ 51
NextEra Energy Capital Holdings [Member] \| Guarantees and Letters of Credit [Member]
Related Party Transaction [Line Items]
Total amount of letters of credit	$ 1,700		$ 1,700