Variable Interest Entities (VIEs) (Details) $ in Millions	3 Months Ended	6 Months Ended	12 Months Ended
	Dec. 31, 2021 USD ($) variable_interest_entity MW	Jun. 30, 2022 MW	Dec. 31, 2021 USD ($) variable_interest_entity mi MW	Dec. 31, 2019 USD ($) MW	Dec. 31, 2020 USD ($) variable_interest_entity
Variable Interest Entity [Line Items]
Carrying amount of assets, consolidated variable interest entity	$ 140,912		$ 140,912	$ 117,691	$ 127,684
Carrying amount of liabilities, consolidated variable interest entity	95,243		95,243		82,755
Investment in equity method investees	6,159		6,159	7,453	5,728
Variable Interest Entity Other [Member]
Variable Interest Entity [Line Items]
Investments in special purpose entities	4,559		4,559		3,704
Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Carrying amount of assets, consolidated variable interest entity	614		614		423
Carrying amount of liabilities, consolidated variable interest entity	64		$ 64		68
Variable Interest Entity, Consolidated, Income Allocation, Percentage			50.00%
Electricity Transmission Line | mi			280
FPL [Member]
Variable Interest Entity [Line Items]
Carrying amount of assets, consolidated variable interest entity	78,067		$ 78,067	$ 65,690	71,001	[1]
Carrying amount of liabilities, consolidated variable interest entity	44,473		44,473		41,773	[1]
FPL [Member] | Variable Interest Entity Other [Member]
Variable Interest Entity [Line Items]
Investments in special purpose entities	$ 3,799		$ 3,799		$ 3,124
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	8		8		3
Carrying amount of assets, consolidated variable interest entity	$ 1,851		$ 1,851		$ 751
Carrying amount of liabilities, consolidated variable interest entity	1,258		$ 1,258		607
Solar generating facility capability | MW			772
Indirect Subsidiary of NextEra Energy Resources [Member] | Photovoltaic Solar Facility [Member] | Minimum [Member]
Variable Interest Entity [Line Items]
Ownership percentage (in hundredths)			50.00%
Indirect Subsidiary of NextEra Energy Resources [Member] | Photovoltaic Solar Facility [Member] | Maximum [Member]
Variable Interest Entity [Line Items]
Ownership percentage (in hundredths)			67.00%
NextEra Energy Resources Consolidated VIE [Member] | 10% direct ownership in wind and solar facilities
Variable Interest Entity [Line Items]
Carrying amount of assets, consolidated variable interest entity	1,518		$ 1,518		1,572
Carrying amount of liabilities, consolidated variable interest entity	$ 79		79		393
Ownership percentage (in hundredths)	10.00%
Wind electric generating facility capability (in megawatts) | MW	400
Solar generating facility capability | MW	599
NEER [Member]
Variable Interest Entity [Line Items]
Wind electric generating facility capability (in megawatts) | MW				220
Investment in equity method investees	$ 5,485		$ 5,485		5,239
NEER [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Wind electric generating facility capability (in megawatts) | MW			11,226
Solar generating facility capability | MW			1,894
NEER [Member] | Variable Interest Entities Wind and Solar Primary Beneficiary [Member] [Member]
Variable Interest Entity [Line Items]
Carrying amount of assets, consolidated variable interest entity	17,419		$ 17,419		16,180
Carrying amount of liabilities, consolidated variable interest entity	1,480		$ 1,480		1,741
Wind electric generating facility capability (in megawatts) | MW			10,626
NEER [Member] | Variable Interest Entities Wind and Solar Primary Beneficiary [Member] [Member] | Forecast [Member]
Variable Interest Entity [Line Items]
Wind electric generating facility capability (in megawatts) | MW		200
Other Investments [Member] | Subsidiaries of NEE [Member]
Variable Interest Entity [Line Items]
Investment in equity method investees	4,214		$ 4,214		$ 3,932
Commitments To Increase (Decrease) In Equity Method Investments	$ 110		$ 110

[1] Amounts have been retrospectively adjusted to reflect the merger of FPL and Gulf Power Company, see Note 6 – Merger of FPL and Gulf Power Company.