Summarized Financial Information of Capital Holdings (Details) (USD $) In Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2011		Jun. 30, 2010		Jun. 30, 2011		Jun. 30, 2010		Dec. 31, 2010		Dec. 31, 2009
Condensed Consolidating Statements of Income
Operating revenues	$ 3,961		$ 3,591		$ 7,094		$ 7,213
Operating expenses	(3,054)		(2,882)		(5,759)		(5,565)
Interest expense	(256)		(247)		(510)		(485)
Other income (deductions) - net	76		32		138		101
INCOME BEFORE INCOME TAXES	727		494		963		1,264
Income tax expense (benefit)	147		77		115		291
Net income (loss)	580		417		848		973
PROPERTY, PLANT AND EQUIPMENT
Electric utility plant in service and other property	56,141				56,141				54,221
Less accumulated depreciation and amortization	(15,287)				(15,287)				(15,146)
Total property, plant and equipment - net	40,854				40,854				39,075
CURRENT ASSETS
Cash and cash equivalents	287		829		287		829		302		238
Receivables	2,133				2,133				2,582
Other	2,393				2,393				2,374
Total current assets	4,813				4,813				5,258
OTHER ASSETS
Investment in subsidiaries	0				0				0
Other	8,890				8,890				8,661
Total other assets	8,890				8,890				8,661
TOTAL ASSETS	54,557				54,557				52,994
CAPITALIZATION
Common shareholders' equity	14,906				14,906				14,461
Long-term debt	19,235				19,235				18,013
Total capitalization	34,141				34,141				32,474
CURRENT LIABILITIES
Debt due within one year	2,218				2,218				2,809
Accounts payable	1,280				1,280				1,124
Other	2,891				2,891				2,971
Total current liabilities	6,389				6,389				6,904
OTHER LIABILITIES AND DEFERRED CREDITS
Asset retirement obligations	1,587				1,587				1,639
Accumulated deferred income taxes	5,281				5,281				5,109
Regulatory liabilities	4,303				4,303				4,259
Other	2,856				2,856				2,609
Total other liabilities and deferred credits	14,027				14,027				13,616
COMMITMENTS AND CONTINGENCIES
TOTAL CAPITALIZATION AND LIABILITIES	54,557				54,557				52,994
Condensed Consolidating Statements of Cash Flows
NET CASH PROVIDED BY OPERATING ACTIVITIES					1,991		1,748
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures, independent power and other investments and nuclear fuel purchases					(2,860)		(2,757)
Capital contribution to FPL					0		0
Cash grants under the Recovery Act					486		511
Other - net					15		(37)
Net cash used in investing activities					(2,359)		(2,283)
CASH FLOWS FROM FINANCING ACTIVITIES
Issuances of long-term debt					1,453		1,585
Retirements of long-term debt					(991)		(269)
Proceeds from sale of differential membership interests					210		190
Net change in short-term debt					160		(54)
Issuances of common stock					33		69
Dividends on common stock					(459)		(410)
Other - net					(53)		15
Net cash provided by (used in) financing activities					353		1,126
Net increase (decrease) in cash and cash equivalents					(15)		591
Cash and cash equivalents at beginning of period	287		829		287		829		302		238
Cash and cash equivalents at end of period	287		829		287		829		302		238
NextEra Energy (Guarantor) [Member]
Condensed Consolidating Statements of Income
Operating revenues	0		0		0		0
Operating expenses	(4)		(2)		(7)		(2)
Interest expense	(3)		(4)		(7)		(8)
Other income (deductions) - net	526		427		797		989
INCOME BEFORE INCOME TAXES	519		421		783		979
Income tax expense (benefit)	(61)		4		(65)		6
Net income (loss)	580		417		848		973
PROPERTY, PLANT AND EQUIPMENT
Electric utility plant in service and other property	30				30				19
Less accumulated depreciation and amortization	(1)				(1)				0
Total property, plant and equipment - net	29				29				19
CURRENT ASSETS
Cash and cash equivalents	0		0		0		0		0		0
Receivables	164				164				654
Other	8				8				9
Total current assets	172				172				663
OTHER ASSETS
Investment in subsidiaries	14,795				14,795				14,150
Other	472				472				365
Total other assets	15,267				15,267				14,515
TOTAL ASSETS	15,468				15,468				15,197
CAPITALIZATION
Common shareholders' equity	14,906				14,906				14,461
Long-term debt	0				0				0
Total capitalization	14,906				14,906				14,461
CURRENT LIABILITIES
Debt due within one year	0				0				0
Accounts payable	7				7				0
Other	221				221				352
Total current liabilities	228				228				352
OTHER LIABILITIES AND DEFERRED CREDITS
Asset retirement obligations	0				0				0
Accumulated deferred income taxes	50				50				53
Regulatory liabilities	38				38				46
Other	246				246				285
Total other liabilities and deferred credits	334				334				384
COMMITMENTS AND CONTINGENCIES
TOTAL CAPITALIZATION AND LIABILITIES	15,468				15,468				15,197
Condensed Consolidating Statements of Cash Flows
NET CASH PROVIDED BY OPERATING ACTIVITIES					437		487
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures, independent power and other investments and nuclear fuel purchases					(16)		0
Capital contribution to FPL					0		(135)
Cash grants under the Recovery Act					0		0
Other - net					16		0
Net cash used in investing activities					0		(135)
CASH FLOWS FROM FINANCING ACTIVITIES
Issuances of long-term debt					0		0
Retirements of long-term debt					0		0
Proceeds from sale of differential membership interests					0		0
Net change in short-term debt					0		0
Issuances of common stock					33		69
Dividends on common stock					(459)		(410)
Other - net					(11)		(11)
Net cash provided by (used in) financing activities					(437)		(352)
Net increase (decrease) in cash and cash equivalents					0		0
Cash and cash equivalents at beginning of period	0		0		0		0		0		0
Cash and cash equivalents at end of period	0		0		0		0		0		0
Capital Holdings Consolidated [Member]
Condensed Consolidating Statements of Income
Operating revenues	1,163		1,013		2,053		2,310
Operating expenses	(824)		(804)		(1,689)		(1,554)
Interest expense	(159)		(156)		(322)		(307)
Other income (deductions) - net	72		20		125		86
INCOME BEFORE INCOME TAXES	252		73		167		535
Income tax expense (benefit)	24		(79)		(125)		11
Net income (loss)	228		152		292		524
PROPERTY, PLANT AND EQUIPMENT
Electric utility plant in service and other property	22,651				22,651				21,779
Less accumulated depreciation and amortization	(4,402)				(4,402)				(4,275)
Total property, plant and equipment - net	18,249				18,249				17,504
CURRENT ASSETS
Cash and cash equivalents	246		450		246		450		282		156
Receivables	1,143				1,143				1,380
Other	907				907				1,024
Total current assets	2,296				2,296				2,686
OTHER ASSETS
Investment in subsidiaries	0				0				0
Other	3,838				3,838				3,845
Total other assets	3,838				3,838				3,845
TOTAL ASSETS	24,383				24,383				24,035
CAPITALIZATION
Common shareholders' equity	4,917				4,917				4,359
Long-term debt	12,328				12,328				11,331
Total capitalization	17,245				17,245				15,690
CURRENT LIABILITIES
Debt due within one year	1,515				1,515				2,664
Accounts payable	599				599				571
Other	1,196				1,196				1,361
Total current liabilities	3,310				3,310				4,596
OTHER LIABILITIES AND DEFERRED CREDITS
Asset retirement obligations	476				476				556
Accumulated deferred income taxes	1,249				1,249				1,336
Regulatory liabilities	0				0				0
Other	2,103				2,103				1,857
Total other liabilities and deferred credits	3,828				3,828				3,749
COMMITMENTS AND CONTINGENCIES
TOTAL CAPITALIZATION AND LIABILITIES	24,383				24,383				24,035
Condensed Consolidating Statements of Cash Flows
NET CASH PROVIDED BY OPERATING ACTIVITIES					627		723
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures, independent power and other investments and nuclear fuel purchases					(1,262)		(1,271)
Capital contribution to FPL					0		0
Cash grants under the Recovery Act					301		426
Other - net					4		(15)
Net cash used in investing activities					(957)		(860)
CASH FLOWS FROM FINANCING ACTIVITIES
Issuances of long-term debt					1,205		1,071
Retirements of long-term debt					(967)		(247)
Proceeds from sale of differential membership interests					210		190
Net change in short-term debt					(393)		(125)
Issuances of common stock					0		0
Dividends on common stock					0		0
Other - net					239		(458)
Net cash provided by (used in) financing activities					294		431
Net increase (decrease) in cash and cash equivalents					(36)		294
Cash and cash equivalents at beginning of period	246		450		246		450		282		156
Cash and cash equivalents at end of period	246		450		246		450		282		156
Other Consolidated Entity And Consolidation Eliminations [Member]
Condensed Consolidating Statements of Income
Operating revenues	2,798	[1]	2,578	[1]	5,041	[1]	4,903	[1]
Operating expenses	(2,226)	[1]	(2,076)	[1]	(4,063)	[1]	(4,009)	[1]
Interest expense	(94)	[1]	(87)	[1]	(181)	[1]	(170)	[1]
Other income (deductions) - net	(522)	[1]	(415)	[1]	(784)	[1]	(974)	[1]
INCOME BEFORE INCOME TAXES	(44)	[1]	0	[1]	13	[1]	(250)	[1]
Income tax expense (benefit)	184	[1]	152	[1]	305	[1]	274	[1]
Net income (loss)	(228)	[1]	(152)	[1]	(292)	[1]	(524)	[1]
PROPERTY, PLANT AND EQUIPMENT
Electric utility plant in service and other property	33,460	[1]			33,460	[1]			32,423	[1]
Less accumulated depreciation and amortization	(10,884)	[1]			(10,884)	[1]			(10,871)	[1]
Total property, plant and equipment - net	22,576	[1]			22,576	[1]			21,552	[1]
CURRENT ASSETS
Cash and cash equivalents	41	[1]	379	[1]	41	[1]	379	[1]	20	[1]	82	[1]
Receivables	826	[1]			826	[1]			548	[1]
Other	1,478	[1]			1,478	[1]			1,341	[1]
Total current assets	2,345	[1]			2,345	[1]			1,909	[1]
OTHER ASSETS
Investment in subsidiaries	(14,795)	[1]			(14,795)	[1]			(14,150)	[1]
Other	4,580	[1]			4,580	[1]			4,451	[1]
Total other assets	(10,215)	[1]			(10,215)	[1]			(9,699)	[1]
TOTAL ASSETS	14,706	[1]			14,706	[1]			13,762	[1]
CAPITALIZATION
Common shareholders' equity	(4,917)	[1]			(4,917)	[1]			(4,359)	[1]
Long-term debt	6,907	[1]			6,907	[1]			6,682	[1]
Total capitalization	1,990	[1]			1,990	[1]			2,323	[1]
CURRENT LIABILITIES
Debt due within one year	703	[1]			703	[1]			145	[1]
Accounts payable	674	[1]			674	[1]			553	[1]
Other	1,474	[1]			1,474	[1]			1,258	[1]
Total current liabilities	2,851	[1]			2,851	[1]			1,956	[1]
OTHER LIABILITIES AND DEFERRED CREDITS
Asset retirement obligations	1,111	[1]			1,111	[1]			1,083	[1]
Accumulated deferred income taxes	3,982	[1]			3,982	[1]			3,720	[1]
Regulatory liabilities	4,265	[1]			4,265	[1]			4,213	[1]
Other	507	[1]			507	[1]			467	[1]
Total other liabilities and deferred credits	9,865	[1]			9,865	[1]			9,483	[1]
COMMITMENTS AND CONTINGENCIES		[1]				[1]				[1]
TOTAL CAPITALIZATION AND LIABILITIES	14,706	[1]			14,706	[1]			13,762	[1]
Condensed Consolidating Statements of Cash Flows
NET CASH PROVIDED BY OPERATING ACTIVITIES					927	[1]	538	[1]
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures, independent power and other investments and nuclear fuel purchases					(1,582)	[1]	(1,486)	[1]
Capital contribution to FPL					0	[1]	135	[1]
Cash grants under the Recovery Act					185	[1]	85	[1]
Other - net					(5)	[1]	(22)	[1]
Net cash used in investing activities					(1,402)	[1]	(1,288)	[1]
CASH FLOWS FROM FINANCING ACTIVITIES
Issuances of long-term debt					248	[1]	514	[1]
Retirements of long-term debt					(24)	[1]	(22)	[1]
Proceeds from sale of differential membership interests					0	[1]	0	[1]
Net change in short-term debt					553	[1]	71	[1]
Issuances of common stock					0	[1]	0	[1]
Dividends on common stock					0	[1]	0	[1]
Other - net					(281)	[1]	484	[1]
Net cash provided by (used in) financing activities					496	[1]	1,047	[1]
Net increase (decrease) in cash and cash equivalents					21	[1]	297	[1]
Cash and cash equivalents at beginning of period	41	[1]	379	[1]	41	[1]	379	[1]	20	[1]	82	[1]
Cash and cash equivalents at end of period	$ 41	[1]	$ 379	[1]	$ 41	[1]	$ 379	[1]	$ 20	[1]	$ 82	[1]

[1] Represents FPL and consolidating adjustments.