Equity (Additional Disclosures Regarding Common and Preferred Stock) (Details) - USD ($) $ / shares in Units, $ in Millions	Dec. 31, 2017	Nov. 30, 2017
NextEra Energy [Member] \| Serial Preferred Stock [Member]
Preferred stock [Abstract]
Authorized (in shares)	100,000,000
Par value (in dollars per share)	$ 0.01
Outstanding (in shares)	0
Preferred Stock, $100 Par Value [Member] \| FPL [Member]
Preferred stock [Abstract]
Authorized (in shares)	10,414,100
Par value (in dollars per share)	$ 100
Preferred Stock, No Par Value [Member] \| FPL [Member]
Preferred stock [Abstract]
Authorized (in shares)	5,000,000
Par value (in dollars per share)	$ 0
Outstanding (in shares)	0
Preferred Stock, No Par Value [Member] \| FPL [Member] \| Subordinated Preferred Stock [Member]
Preferred stock [Abstract]
Authorized (in shares)	5,000,000
Par value (in dollars per share)	$ 0
NEP [Member] \| Series A Convertible Preferred Units [Member]
Preferred stock [Abstract]
Preferred stock, value of issuance		$ 550

The maximum number of preferred shares permitted to be issued by NextEra Energy's charter.

No definition available.

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- Definition

Aggregate share number for all preferred stock held by stockholders. Does not include preferred shares that have been repurchased.

+ References

No definition available.

+ Details

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- Definition

Face amount or stated value per share of preferred stock; generally not indicative of the fair market value per share.

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No definition available.

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No definition available.

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- Definition

Aggregate par or stated value of issued nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable preferred shares, par value and other disclosure concepts are in another section within stockholders' equity.

+ 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(28))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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