Debt (Details) $ in Millions	9 Months Ended
Sep. 30, 2015 USD ($)
NextEra Energy Resources subsidiary [Member] \| Revolving Credit Facility [Member] \| Canadian revolving credit agreements [Member]
Debt Instrument [Line Items]
Interest Rate Terms	Variable
Proceeds from Issuance of Debt	$ 408
NextEra Energy Resources subsidiary [Member] \| Revolving Credit Facility [Member] \| Limited-recourse construction and term loan facility 1 [Member]
Debt Instrument [Line Items]
Interest Rate Terms	Variable
Proceeds from Issuance of Debt	$ 204
NextEra Energy Resources subsidiary [Member] \| Revolving Credit Facility [Member] \| Cash grant bridge loan facility [Member]
Debt Instrument [Line Items]
Interest Rate Terms	Variable
Proceeds from Issuance of Debt	$ 29
NextEra Energy Resources subsidiary [Member] \| Revolving Credit Facility [Member] \| Limited-recourse construction and term loan facility 2 [Member]
Debt Instrument [Line Items]
Interest Rate Terms	Variable
Proceeds from Issuance of Debt	$ 361
NextEra Energy Resources subsidiary [Member] \| Term Loan [Member] \| Canadian Senior Secured Limited- Recourse 1 [Member]
Debt Instrument [Line Items]
Interest Rate Terms	Variable
Face amount	$ 324
NextEra Energy Resources subsidiary [Member] \| Term Loan [Member] \| Canadian Senior Secured Limited-Recourse 2 [Member]
Debt Instrument [Line Items]
Interest Rate Terms	Variable
Face amount	$ 228
NextEra Energy Resources subsidiary [Member] \| Term Loan [Member] \| Senior Secured Limited-Recourse 2 [Member]
Debt Instrument [Line Items]
Interest Rate Terms	Variable
Face amount	$ 40
NextEra Energy Partners subsidiary [Member] \| Revolving Credit Facility [Member] \| Senior Secured Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Interest Rate Terms	Variable
Proceeds from Issuance of Debt	$ 122
NextEra Energy Partners subsidiary [Member] \| Term Loan [Member] \| Limited-Recourse [Member]
Debt Instrument [Line Items]
Interest rate	4.52%
Face amount	$ 31
NextEra Energy Partners subsidiary [Member] \| Term Loan [Member] \| Senior Secured Limited-Recourse 1 [Member]
Debt Instrument [Line Items]
Interest Rate Terms	(d)
Interest rate	4.38%
Face amount	$ 81
NextEra Energy Partners subsidiary [Member] \| Term Loan [Member] \| Underlying Index Plus Margin [Member] \| Senior Secured Limited-Recourse 1 [Member]
Debt Instrument [Line Items]
Face amount	$ 54
Capital Holdings [Member] \| Term Loan [Member] \| Term Loans [Member]
Debt Instrument [Line Items]
Interest Rate Terms	Variable
Face amount	$ 450
Capital Holdings [Member] \| Term Loan [Member] \| Term Loan 2 [Member]
Debt Instrument [Line Items]
Interest Rate Terms	Variable
Face amount	$ 100
Capital Holdings [Member] \| Debenture [Member]
Debt Instrument [Line Items]
Interest rate	2.80%
Face amount	$ 300
Capital Holdings [Member] \| Debenture [Member] \| Debentures Related To Nextera Energys Equity Units [Member]
Debt Instrument [Line Items]
Interest rate	2.36%
Face amount	$ 700
FPL [Member] \| Bonds [Member] \| Industrial Development Revenue [Member]
Debt Instrument [Line Items]
Interest Rate Terms	Variable
Face amount	$ 85

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

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- 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

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- 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

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration