Debt (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012
NextEra Energy Capital Holdings and NextEra Energy Resources subsidiary [Member] | Canadian revolving credit facilities [Member]
Debt Instrument [Line Items]
Date Issued	January - March 2012
Interest Rate Terms	Variable	[1]
Principal Amount	$ 16
Maturity Date	2013
NextEra Energy Capital Holdings and NextEra Energy Resources subsidiary [Member] | Eurodollar denominated revolving loan [Member]
Debt Instrument [Line Items]
Date Issued	January - March 2012
Interest Rate Terms	Variable	[1]
Principal Amount	22
Maturity Date	2014
NextEra Energy Resources [Member] | Eurodollar denominated senior secured limited recourse loan due 2030 [Member]
Debt Instrument [Line Items]
Date Issued	January - March 2012
Interest Rate Terms	Variable	[1],[2]
Principal Amount	67
Maturity Date	2030
NextEra Energy Resources [Member] | Eurodollar denominated senior secured limited recourse loan due 2015 [Member]
Debt Instrument [Line Items]
Date Issued	January - March 2012
Interest Rate Terms	Variable	[1]
Principal Amount	14
Maturity Date	2015
Lone Star [Member] | Senior secured limited-recourse loan [Member]
Debt Instrument [Line Items]
Date Issued	January - March 2012
Interest Rate Terms	Variable	[1]
Principal Amount	58
Maturity Date	2016
Capital Holdings [Member] | Junior Subordinated Debentures [Member]
Debt Instrument [Line Items]
Date Issued	March 2012
Interest Rate (as a percent)	5.70%
Principal Amount	$ 400
Maturity Date	2072

[1] Variable rate is based on an underlying index plus a margin.

[2] Interest rate swap agreements were entered into with respect to these issuances.