Variable Interest Entities (VIEs) (Details) $ in Millions	6 Months Ended
	Jun. 30, 2020 USD ($) variable_interest_entity entity mi MW	Dec. 31, 2019 USD ($) variable_interest_entity
Variable Interest Entity [Line Items]
Carrying amount of assets, consolidated variable interest entity	$ 121,961	$ 117,691
Investment in equity method investees	6,957	7,453
Other variable interest entities [Member]
Variable Interest Entity [Line Items]
Investments in special purpose entities	3,093	3,247
Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Carrying amount of assets, consolidated variable interest entity	254	173
Carrying amount of liabilities, consolidated variable interest entity	$ 40	29
Electricity Transmission Line (in miles) | mi	280
Percentage of profits and losses	50.00%
FPL [Member]
Variable Interest Entity [Line Items]
Carrying amount of assets, consolidated variable interest entity	$ 59,330	57,188
FPL [Member] | Other variable interest entities [Member]
Variable Interest Entity [Line Items]
Investments in special purpose entities	$ 2,601	2,717
NextEra Energy Resources [Member]
Variable Interest Entity [Line Items]
Total number of consolidated variable interest entities | variable_interest_entity	34
NextEra Energy Resources [Member] | Variable Interest Entities Gas And Oil Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Total number of consolidated variable interest entities | variable_interest_entity	2
Carrying amount of assets, consolidated variable interest entity	$ 202	216
Carrying amount of liabilities, consolidated variable interest entity	$ 27	$ 25
Natural gas and or oil electric generating facility capacity (in megawatts) | MW	1,450
NextEra Energy Resources [Member] | 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	28	26
Carrying amount of assets, consolidated variable interest entity	$ 11,900	$ 11,300
Carrying amount of liabilities, consolidated variable interest entity	$ 800	800
Solar generating facility capability (in MW) | MW	748
Wind electric generating facility capability (in megawatts) | MW	7,576
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	3
Carrying amount of assets, consolidated variable interest entity	$ 784	776
Carrying amount of liabilities, consolidated variable interest entity	$ 636	598
Ownership percentage	50.00%
Number of entities with ownership interest contributed | variable_interest_entity	5
Solar generating facility capability (in MW) | MW	409
Other Investments [Member] | Subsidiaries of NEE [Member]
Variable Interest Entity [Line Items]
Investment in equity method investees	$ 3,765	$ 4,254
Number of entities committed to invest in | entity	5