Debt (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2011
NextEra Energy Resources [Member] | Canadian revolving credit facilities [Member]
Debt Instrument [Line Items]
Date Issued	January - September 2011
Interest Rate Terms	Variable	[1]
Principal Amount	$ 152
Maturity Date	2013
NextEra Energy Resources [Member] | Senior secured limited recourse notes [Member]
Debt Instrument [Line Items]
Date Issued	February 2011
Interest Rate (as a percent)	6.25%
Interest Rate Terms	Fixed
Principal Amount	82
Maturity Date	2031
NextEra Energy Resources [Member] | Eurodollar denominated senior secured limited recourse loan due 2030 [Member]
Debt Instrument [Line Items]
Date Issued	April - September 2011
Interest Rate Terms	Variable	[1],[2]
Principal Amount	243
Maturity Date	2030
NextEra Energy Resources [Member] | Eurodollar denominated senior secured limited recourse loan due 2015 [Member]
Debt Instrument [Line Items]
Date Issued	April - September 2011
Interest Rate Terms	Variable	[1]
Principal Amount	24
Maturity Date	2015
NextEra Energy Resources [Member] | Eurodollar denominated revolving loan [Member]
Debt Instrument [Line Items]
Date Issued	June - September 2011
Interest Rate Terms	Variable	[1]
Principal Amount	27
Maturity Date	2014
NextEra Energy Resources [Member] | Limited recourse term loan [Member]
Debt Instrument [Line Items]
Date Issued	August 2011
Interest Rate Terms	Variable	[1],[2]
Principal Amount	70
Maturity Date	2016
NextEra Energy Resources [Member] | Limited Recourse Note [Member]
Debt Instrument [Line Items]
Date Issued	August 2011
Interest Rate (as a percent)	4.125%
Interest Rate Terms	Fixed
Principal Amount	702	[3]
Loan Proceeds Restricted For Construction of Solar Thermal Facility	596
Maturity Date	2038
FPL [Member] | First mortgage bonds [Member]
Debt Instrument [Line Items]
Date Issued	June 2011
Interest Rate (as a percent)	5.125%
Interest Rate Terms	Fixed
Principal Amount	250
Maturity Date	2041
Capital Holdings [Member] | Debentures [Member]
Debt Instrument [Line Items]
Date Issued	June 2011
Interest Rate (as a percent)	4.50%
Interest Rate Terms	Fixed	[2]
Principal Amount	400
Maturity Date	2021
Capital Holdings [Member] | Japanese yen denominated term loan [Member]
Debt Instrument [Line Items]
Date Issued	June 2011
Interest Rate Terms	Variable	[1],[4]
Principal Amount	424
Maturity Date	2014
Capital Holdings [Member] | Term Loan [Member]
Debt Instrument [Line Items]
Date Issued	September 2011
Interest Rate (as a percent)	1.10%
Interest Rate Terms	Fixed
Principal Amount	50
Maturity Date	2016
Capital Holdings [Member] | Term Loans [Member]
Debt Instrument [Line Items]
Date Issued	September 2011
Interest Rate Terms	Variable	[1]
Principal Amount	$ 525
Maturity Date	2013

[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.

[3] At September 30, 2011, approximately $596 million of loan proceeds were restricted for the construction of a solar thermal facility and included in other assets on NextEra Energy's condensed consolidated balance sheets.

[4] Cross currency basis swap agreements were entered into with respect to both interest and principal payments on this loan.