Variable Interest Entities (VIEs) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2020 USD ($) variable_interest_entity entity MW	Dec. 31, 2019 USD ($)
Variable Interest Entity [Line Items]
Carrying amount of assets, consolidated variable interest entity	$ 120,637	$ 117,691
Investment in equity method investees	6,862	7,453
Other variable interest entities [Member]
Variable Interest Entity [Line Items]
Investments in special purpose entities	2,835	3,247
Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Carrying amount of assets, consolidated variable interest entity	235	173
Carrying amount of liabilities, consolidated variable interest entity	$ 56	29
Percentage of profits and losses	50.00%
FPL [Member]
Variable Interest Entity [Line Items]
Carrying amount of assets, consolidated variable interest entity	$ 58,317	57,188
FPL [Member] | Other variable interest entities [Member]
Variable Interest Entity [Line Items]
Investments in special purpose entities	$ 2,330	2,717
NextEra Energy Resources [Member]
Variable Interest Entity [Line Items]
Total number of consolidated variable interest entities | variable_interest_entity	32
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	$ 204	216
Carrying amount of liabilities, consolidated variable interest entity	$ 23	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	26
Carrying amount of assets, consolidated variable interest entity	$ 11,200	11,300
Carrying amount of liabilities, consolidated variable interest entity	$ 600	800
Solar generating facility capability (in MW) | MW	473
Wind electric generating facility capability (in megawatts) | MW	7,081
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	$ 778	776
Carrying amount of liabilities, consolidated variable interest entity	$ 635	598
Ownership percentage	50.00%
Number of entities with ownership interest contributed | variable_interest_entity	5
Solar generating facility capability (in MW) | MW	409.3
Other Investments [Member] | Subsidiaries of NEE [Member]
Variable Interest Entity [Line Items]
Investment in equity method investees	$ 3,731	$ 4,254
Number of entities committed to invest in | entity	5