Debt - Long-term Debt Issuances and Borrowings (Details)	6 Months Ended
Jun. 30, 2021 USD ($)
FPL [Member] \| Senior Unsecured Notes [Member]
Debt Instrument [Line Items]
Principal Amount	$ 1,327,000,000
Interest Rate Terms	Variable
Principal amount not required to be held to final maturity	$ 327,000,000
NextEra Energy Capital Holdings, Inc. [Member] \| Debentures variable [Member]
Debt Instrument [Line Items]
Principal Amount	$ 2,150,000,000
Interest Rate Terms	Variable
NextEra Energy Capital Holdings, Inc. [Member] \| Debentures [Member]
Debt Instrument [Line Items]
Principal Amount	$ 3,500,000,000
NextEra Energy Capital Holdings, Inc. [Member] \| Debentures [Member] \| Minimum
Debt Instrument [Line Items]
Interest Rate (as a percent)	0.65%
NextEra Energy Capital Holdings, Inc. [Member] \| Debentures [Member] \| Maximum
Debt Instrument [Line Items]
Interest Rate (as a percent)	1.90%
NextEra Energy Capital Holdings, Inc. [Member] \| Term Loan [Member]
Debt Instrument [Line Items]
Principal Amount	$ 200,000,000
Interest Rate Terms	Variable

Debt Instrument, Face Amount, Not Required To Be Held To Final Maturity

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
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+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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- Definition

Description of the interest rate as being fixed or variable, and, if variable, identification of the index or rate on which the interest rate is based and the number of points or percentage added to that index or rate to set the rate, and other pertinent information, such as frequency of rate resets.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
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+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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