Commitments and Contingencies (Spain Solar Projects) (Details) - Mar. 31, 2016 € in Millions, $ in Millions	USD ($)	EUR (€)
NextEra Energy Resources [Member]
Loss Contingencies [Line Items]
Amount of debt outstanding under financing agreements related to Spain solar projects	$ 585
Amount of noncurrent derivative liability classified as current derivative liability due to event of default	127
Standby Letters of Credit [Member] \| Capital Holdings [Member]
Loss Contingencies [Line Items]
Maximum borrowing capacity of letters of credit	42	€ 37
Amount drawn on letters of credit	$ 16	€ 14

Amount of debt outstanding under financing agreements related to Spain solar projects

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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 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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