Debt (Details) (USD $)	9 Months Ended																9 Months Ended							0 Months Ended
	Sep. 30, 2012 NextEra Energy Capital Holdings and NextEra Energy Resources subsidiary [Member] Canadian revolving credit facilities [Member]		Sep. 30, 2012 NextEra Energy Capital Holdings and NextEra Energy Resources subsidiary [Member] Eurodollar denominated revolving loan [Member]		Sep. 30, 2012 NextEra Energy Resources Subsidiaries [Member] Eurodollar denominated senior secured limited recourse loan due 2030 [Member]		Sep. 30, 2012 NextEra Energy Resources Subsidiaries [Member] Eurodollar denominated senior secured limited recourse loan due 2015 [Member]		Sep. 30, 2012 Lone Star [Member] Senior secured limited-recourse loan [Member]		Sep. 30, 2012 FPL [Member] First mortgage bonds issued May 2012 [Member]	Sep. 30, 2012 Capital Holdings [Member] Junior subordinated debentures sold in March 2012 [Member]	Sep. 30, 2012 Capital Holdings [Member] Debentures related to NEE equity units [Member]	Sep. 30, 2012 Capital Holdings [Member] Junior subordinated debentures sold in June 2012 [Member]	Sep. 30, 2012 Capital Holdings [Member] Debentures Related to NEE Equity Units Sold September 2012 [Member]	Sep. 30, 2012 Capital Holdings [Member] Debentures Sold September 2012 [Member]	Sep. 30, 2012 NextEra Energy Resources subsidiary [Member] Senior secured limited-recourse loan [Member]		Sep. 30, 2012 NextEra Energy Resources subsidiary [Member] Limited recourse term loan [Member]		Sep. 30, 2012 NextEra Energy Resources subsidiary [Member] Canadian Senior Secrued Limited Recourse Notes [Member]	Sep. 30, 2012 NEE Equity Units 2012 [Member]	May 31, 2012 NEE Equity Units 2012 [Member]	Jun. 01, 2012 NEE Equity Units 2009 [Member]	May 31, 2012 NEE Equity Units 2009 [Member]
Debt Instrument [Line Items]
Amount Of Equity Units Sold																						$ 650,000,000	$ 600,000,000
Interest Rate Terms	Variable	[1]	Variable	[1]	Variable	[1],[2]	Variable	[1]	Variable	[1]							Variable	[1],[2]	Variable	[1],[2]
Line of credit facilities and loans, increase, additional borrowings	146,000,000		81,000,000		247,000,000		48,000,000		150,000,000
Interest Rate (as a percent)											4.05%	5.70%	1.70%	5.625%	1.60%	1.20%					4.881%
Principal Amount											600,000,000	400,000,000	600,000,000	350,000,000	650,000,000	500,000,000	232,000,000		99,000,000		176,000,000
Stated Amount Of Each Equity Unit																						$ 50	$ 50
Undivided Beneficial Ownership Interest Per Debenture																						5.00%	5.00%
Principal Amount Of Each Debenture																						1,000	1,000
Price Per Share Of Stock Purchase Contract Low Range																						$ 67.15	$ 64.35
Number Of Shares Subject To Antidilution Adjustments If Purchased On Final Settlement Date At Equal To Or Greater Than High Range Threshold																						0.6205	0.6475
Price Per Share Of Stock Purchase Contract High Range																						$ 80.58	$ 77.22
Number Of Shares Subject To Antidilution Adjustments If Purchased On Final Settlement Date At Less Than Or Equal To Low Range Threshold																						0.7446	0.7770
Trading Period Over Which Market Value Is Determined By Reference To Average Closing Prices Of Common Stock																						20 days	20 days
Rate Of Total Annual Distributions On Equity Units																						5.889%	5.599%
Rate Of Total Annual Distributions On Debentures																						1.60%	1.70%		1.611%
Rate Of Payments On Stock Purchase Contracts																						4.289%	3.899%
Debentures remarketed in May 2012																									350,000,000
Stock Issued During Period, Shares, New Issues																								5,400,500
Stock Issued During Period, Value, New Issues																								$ 350,000,000

[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.