Variable Interest Entities (VIEs) (Details) $ in Millions	3 Months Ended	9 Months Ended
	Mar. 31, 2026 USD ($) variable_interest_entity basisPoint MW	Dec. 31, 2026 MW	Dec. 31, 2025 USD ($) variable_interest_entity	Mar. 31, 2025 USD ($)
Variable Interest Entity [Line Items]
Carrying amount of assets, consolidated variable interest entity	$ 221,424.0		$ 212,721.0
TOTAL LIABILITIES	154,792.0		146,242.0
Investment in equity method investees	5,989.0		5,528.0
Other variable interest entities [Member]
Variable Interest Entity [Line Items]
Investments in special purpose entities	$ 6,412.0		6,592.0
Indirect Subsidiary of NextEra Energy Resources [Member] | Photovoltaic Solar Facility [Member]
Variable Interest Entity [Line Items]
Total number of consolidated variable interest entities | variable_interest_entity	5
Carrying amount of assets, consolidated variable interest entity	$ 503.0		506.0
TOTAL LIABILITIES	$ 99.0		148.0
Solar generating facility capability (in megawatts) | MW	280
Indirect Subsidiary of NextEra Energy Resources [Member] | Photovoltaic Solar Facility [Member] | Minimum
Variable Interest Entity [Line Items]
Ownership percentage	50.00%
Indirect Subsidiary of NextEra Energy Resources [Member] | Photovoltaic Solar Facility [Member] | Maximum
Variable Interest Entity [Line Items]
Ownership percentage	67.00%
NextEra Energy Resources
Variable Interest Entity [Line Items]
Investment in equity method investees				$ 1,700.0
NextEra Energy Resources | Variable Interest Entities Wind and Solar PV Facilities [Member[
Variable Interest Entity [Line Items]
Carrying amount of assets, consolidated variable interest entity	$ 1,285.0		1,301.0
TOTAL LIABILITIES	$ 72.0		$ 71.0
Ownership percentage	10.00%
Wind electric generating facility capability (in megawatts) | MW	400
Solar generating facility capability (in megawatts) | MW	599
NextEra Energy Resources | Variable Interest Entities Wind and Solar Primary Beneficiary [Member] [Member]
Variable Interest Entity [Line Items]
Total number of consolidated variable interest entities | variable_interest_entity	33		34
Carrying amount of assets, consolidated variable interest entity	$ 28,670.0		$ 28,768.0
TOTAL LIABILITIES	$ 988.0		1,485.0
Wind electric generating facility capability (in megawatts) | MW	11,689
Solar generating facility capability (in megawatts) | MW	4,810
Solar Plus Storage Facility Capacity | MW	2,824
NextEra Energy Resources | Variable Interest Entities Wind and Solar Primary Beneficiary [Member] [Member] | Forecast
Variable Interest Entity [Line Items]
Solar generating facility capability (in megawatts) | MW		100
Solar Plus Storage Facility Capacity | MW		100
Florida Power & Light Company
Variable Interest Entity [Line Items]
Carrying amount of assets, consolidated variable interest entity	$ 108,645.0		105,158.0
TOTAL LIABILITIES	60,296.0		58,172.0
Florida Power & Light Company | Other variable interest entities [Member]
Variable Interest Entity [Line Items]
Investments in special purpose entities	$ 4,895.0		5,075.0
Subsidiaries of NEE [Member]
Variable Interest Entity [Line Items]
Number of variable interest entities with guarantees to obligations | basisPoint	1
Investment in equity method investees	$ 2,401.0		$ 2,525.0
Commitments To Increase (Decrease) In Equity Method Investments	$ 165.0