v3.7.0.1

Equity (Narrative) (Details) - USD ($)		1 Months Ended	6 Months Ended
	Jun. 28, 2017	Nov. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Class of Stock [Line Items]
Forward sale agreement, number of shares		12,000,000
Forward sale price (in dollars per share)		$ 124.00
Share price (in dollars per share)			$ 140.13
Common Stock [Member]
Class of Stock [Line Items]
Issuance of common stock (in shares)			1,000,000	0
Forward Counterparty [Member] | Common Stock [Member]
Class of Stock [Line Items]
Settlement of shares	6,000,000
Issuance of common stock (in shares)	744,599
Forward Counterparties, Other [Member] | Common Stock [Member]
Class of Stock [Line Items]
Settlement of shares			820,000
Series A Preferred Units [Member] | NextEra Energy Partners, LP [Member]
Class of Stock [Line Items]
Preferred unit purchase agreement, amount to be issued and sold			$ 550,000,000

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- Definition

Forward Contract Indexed to Issuer's Equity, Settlement, Number of Shares

+ References

No definition available.

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- Definition

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- Definition

The per share price of the Company's stock at which the contract holder of the freestanding contract has the right to purchase or sell the Company's stock at a future date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 40
-Section 50
-Paragraph 5
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6445032&loc=d3e90205-114008

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-Name Accounting Standards Codification
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-Section 50
-Paragraph 2
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- Definition

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 40
-Section 50
-Paragraph 5
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=6445032&loc=d3e90205-114008

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- Definition

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- Definition

Number of new stock issued during the period.

+ 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(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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

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