Debt (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2014
senior secured limited-recourse term loan due 2019 [Member] | NextEra Energy Resources subsidiary [Member]
Debt Instrument [Line Items]
Interest Rate Terms	Variable	[1]
Face amount	$ 44
senior secured limited-recourse term loan due 2019 [Member] | An indirect wholly-owned subsidiary of NEECH [Member]
Debt Instrument [Line Items]
Interest Rate Terms	Variable	[1],[2]
Face amount	400
Canadian senior secured limited-recourse term loan [Member] | NextEra Energy Resources subsidiary [Member]
Debt Instrument [Line Items]
Interest Rate Terms	Variable	[1],[2]
Face amount	157
Japanese yen denominated term loan [Member] | Capital Holdings [Member]
Debt Instrument [Line Items]
Interest Rate Terms	Variable	[1],[2],[3]
Face amount	540
senior secured limited-recourse term loan due 2032 [Member] | NextEra Energy Resources subsidiary [Member]
Debt Instrument [Line Items]
Interest Rate Terms	Variable	[1],[2]
Face amount	46
Revolving Credit Facility [Member] | Canadian revolving credit agreements [Member] | NextEra Energy Resources subsidiary [Member]
Debt Instrument [Line Items]
Interest Rate Terms	Variable	[1]
Proceeds from Issuance of Debt	674
Debentures [Member] | Debentures Sold March 2014 [Member] | Capital Holdings [Member]
Debt Instrument [Line Items]
Stated interest rate	2.70%	[2]
Face amount	350
Debentures [Member] | Debentures Sold June 2014 [Member] | Capital Holdings [Member]
Debt Instrument [Line Items]
Stated interest rate	2.40%	[2]
Face amount	350
First Mortgage Bonds [Member] | First Mortgage Bonds Issued May 2014 [Member] | FPL [Member]
Debt Instrument [Line Items]
Stated interest rate	3.25%
Face amount	500
First Mortgage Bonds [Member] | First Mortgage Bonds Issued September 2014 [Member] | FPL [Member]
Debt Instrument [Line Items]
Stated interest rate	4.05%
Face amount	500
Senior Secured Limited-Recourse Notes [Member] | NextEra Energy Resources subsidiary [Member]
Debt Instrument [Line Items]
Stated interest rate	5.60%
Face amount	280
Secured Debt [Member] | Senior Notes [Member] | Lone Star [Member]
Debt Instrument [Line Items]
Face amount	$ 360
Minimum [Member] | Secured Debt [Member] | Senior Notes [Member] | Lone Star [Member]
Debt Instrument [Line Items]
Stated interest rate	2.45%
Maximum [Member] | Secured Debt [Member] | Senior Notes [Member] | Lone Star [Member]
Debt Instrument [Line Items]
Stated interest rate	4.42%

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

[2] Interest rate swap agreements have been entered into with respect to these issuances. See Note 3.

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