Debt (Details) $ in Millions	3 Months Ended
Mar. 31, 2016 USD ($)
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	$ 98
NextEra Energy Resources subsidiary [Member] \| Revolving Credit Facility [Member] \| Cash Grant Bridge Loan Facilities 2018 [Member]
Debt Instrument [Line Items]
Interest Rate Terms	Variable
Proceeds from Issuance of Debt	$ 155
NextEra Energy Resources subsidiary [Member] \| Revolving Credit Facility [Member] \| Limited-recourse construction and term loan facility 2035 [Member]
Debt Instrument [Line Items]
Interest Rate Terms	Variable
Proceeds from Issuance of Debt	$ 106
NextEra Energy Resources subsidiary [Member] \| Term Loan [Member] \| Senior Secured Limited Recourse Term Loan 2027 [Member]
Debt Instrument [Line Items]
Interest Rate Terms	Variable
Proceeds from Issuance of Debt	$ 76
NextEra Energy Resources subsidiary [Member] \| Term Loan [Member] \| Senior Secured Limited Recourse Term Loan 2028 [Member]
Debt Instrument [Line Items]
Interest Rate Terms	Variable
Proceeds from Issuance of Debt	$ 89
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	$ 75
NextEra Energy Partners subsidiary [Member] \| Revolving Credit Facility [Member] \| Limited-recourse construction and term loan facility 2022 [Member]
Debt Instrument [Line Items]
Interest Rate Terms	Variable
Proceeds from Issuance of Debt	$ 41
Capital Holdings [Member] \| Debenture [Member] \| Debenture [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	2.30%
Face amount	$ 500
Capital Holdings [Member] \| Term Loan [Member] \| Term Loan 2021 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	1.00%
Face amount	$ 100

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

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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