Investments in Partnerships and Joint Ventures (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011	Dec. 31, 2004
Equity method investment, financial statement, reported amounts [Abstract]
Ownership interest in partnerships and joint ventures	$ 365		$ 243
NextEra Energy Resources' ownership interest, low range (in hundredths)	20.00%
NextEra Energy Resources' ownership interest, high range (in hundredths)	50.00%
Equity method investment, summarized financial information [Abstract]
Net income	37		27
Total assets	1,955		1,512
Total liabilities	1,299		1,053
Partners'/members' equity	656		459
NEER's share of underlying equity in the principal entities	328		223
Difference between investment carrying amount and underlying equity in net assets	(5)	[1]	1	[1]
NEER's investment carrying amount for the principal entities	323		224
Revenues from services provided by certain subsidiaries to investee partnerships and joint ventures	41		33		26
Net receivables related to services provided and other payments made by certain subsidiaries on behalf of investees	23		11
Preferred trust securities [Abstract]
Proceeds from sale of preferred trust securities to the public						300
Proceeds from sale of common trust securities to NextEra Energy						$ 9
Ownership interest in trust (in hundredths)						100.00%
Interest rate of junior subordinated debentures (in hundredths)						5.875%
Maturity date of junior subordinated debentures						March 2044

[1] The majority of the difference between the investment carrying amount and the underlying equity in net assets is being amortized over the remaining life of the investee's assets.