Variable Interest Entities (VIEs) (Details) $ in Millions	3 Months Ended	9 Months Ended
	Dec. 31, 2025 MW	Sep. 30, 2025 USD ($) variable_interest_entity basisPoint MW	Mar. 31, 2025 USD ($)	Dec. 31, 2024 USD ($) variable_interest_entity
Variable Interest Entity [Line Items]
Carrying amount of assets, consolidated variable interest entity		$ 204,354.0		$ 190,144.0
TOTAL LIABILITIES		139,758.0		129,283.0
Investment in equity method investees		5,451.0		6,118.0
Other variable interest entities [Member]
Variable Interest Entity [Line Items]
Investments in special purpose entities		$ 6,533.0		$ 5,848.0
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		8
Carrying amount of assets, consolidated variable interest entity		$ 517.0		$ 1,708.0
TOTAL LIABILITIES		$ 150.0		520.0
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		$ 1,313.0		1,346.0
TOTAL LIABILITIES		$ 76.0		$ 76.0
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		29		30
Carrying amount of assets, consolidated variable interest entity		$ 25,104.0		$ 23,902.0
TOTAL LIABILITIES		$ 857.0		1,546.0
Wind electric generating facility capability (in megawatts) | MW		10,934
Solar generating facility capability (in megawatts) | MW		3,585
Solar Plus Storage Facility Capacity | MW		2,624
NextEra Energy Resources | Variable Interest Entities Wind and Solar Primary Beneficiary [Member] [Member] | Forecast
Variable Interest Entity [Line Items]
Wind electric generating facility capability (in megawatts) | MW	24
Florida Power & Light Company
Variable Interest Entity [Line Items]
Carrying amount of assets, consolidated variable interest entity		$ 103,614.0		98,141.0
TOTAL LIABILITIES		56,586.0		55,065.0
Florida Power & Light Company | Other variable interest entities [Member]
Variable Interest Entity [Line Items]
Investments in special purpose entities		$ 5,023.0		4,506.0
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		$ 2,491.0		$ 3,315.0
Commitments To Increase (Decrease) In Equity Method Investments		$ 155.0