Summarized Financial Information of NEECH (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended																12 Months Ended
	Dec. 31, 2012		Sep. 30, 2012		Jun. 30, 2012		Mar. 31, 2012		Dec. 31, 2011		Sep. 30, 2011		Jun. 30, 2011		Mar. 31, 2011		Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2008
Condensed Financial Statements, Captions [Line Items]
Equity Method Investment, Ownership Percentage	100.00%																100.00%
Consolidated Statements of Income [Abstract]
Operating revenues	$ 3,375	[1],[2]	$ 3,843	[1],[2]	$ 3,667	[1],[2]	$ 3,371	[1],[2]	$ 3,864	[1],[2]	$ 4,382	[1],[2]	$ 3,961	[1],[2]	$ 3,134	[1],[2]	$ 14,256		$ 15,341		$ 15,317
Operating expenses																	(10,980)		(12,080)	[3]	(12,090)	[3]
Interest expense																	(1,038)		(1,035)		(979)
Equity in earnings of subsidiaries																	0		0		0
Other income (deductions) - net																	365		226	[3]	241	[3]
Income (loss) before income taxes																	2,603		2,452		2,489
Income tax expense (benefit)																	692		529		532
NET INCOME	429	[1],[2]	415	[1],[2]	607	[1],[2]	461	[1],[2]	667	[1],[2]	407	[1],[2]	580	[1],[2]	268	[1],[2]	1,911		1,923		1,957
Comprehensive Income (Loss), Net of Tax, Attributable to Parent																	1,810		1,603		1,954
PROPERTY, PLANT AND EQUIPMENT
Electric utility plant in service and other property	64,917								57,552								64,917		57,552
Less accumulated depreciation and amortization	(15,504)								(15,062)								(15,504)		(15,062)
Total property, plant and equipment - net	49,413								42,490								49,413		42,490
CURRENT ASSETS
Cash and cash equivalents	329								377								329		377		302		238
Receivables	2,056								1,802								2,056		1,802
Other	2,852								2,693								2,852		2,693
Total current assets	5,237								4,872								5,237		4,872
OTHER ASSETS
Investment in subsidiaries	0								0								0		0
Other	9,789								9,826								9,789		9,826
Total other assets	9,789								9,826								9,789		9,826
TOTAL ASSETS	64,439								57,188								64,439		57,188
CAPITALIZATION
Common shareholders' equity	16,068								14,943								16,068		14,943
Long-term debt	23,177								20,810								23,177		20,810
Total capitalization	39,245								35,753								39,245		35,753
CURRENT LIABILITIES
Debt due within one year	4,182								2,157								4,182		2,157
Accounts payable	1,281								1,191								1,281		1,191
Other	3,416								3,371								3,416		3,371
Total current liabilities	8,879								6,719								8,879		6,719
OTHER LIABILITIES AND DEFERRED CREDITS
Asset retirement obligations	1,715								1,611								1,715		1,611		1,639
Accumulated deferred income taxes	6,703								5,681								6,703		5,681
Other	7,897								7,424								7,897		7,424
Total other liabilities and deferred credits	16,315								14,716								16,315		14,716
TOTAL CAPITALIZATION AND LIABILITIES	64,439								57,188								64,439		57,188
Condensed Consolidating Statements of Cash Flows [Abstract]
Net cash provided by operating activities																	3,992		4,074		3,834
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures, independent power and other investments and nuclear fuel purchases																	(9,461)		(6,628)		(5,846)
Capital contribution to FPL																	0		0		0
Cash grants under the Recovery Act																	196		624		588
Sale of natural gas-fired generating assets																	0		1,204		0
Change in loan proceeds restricted for construction																	314		(565)		0
Other - net																	23		86		(26)
Net cash used in investing activities																	(8,928)		(5,279)		(5,284)
CASH FLOWS FROM FINANCING ACTIVITES
Issuances of long-term debt																	6,630		3,940		3,724
Retirements of long-term debt																	(1,612)		(2,121)		(769)
Proceeds from sale of differential membership interests																	808		466		261
Net change in short-term debt																	61		460		(1,130)
Dividends on common stock																	(1,004)		(920)		(823)
Other - net																	5		(545)		251
Net cash provided by (used in) financing activities																	4,888		1,280		1,514
Net increase (decrease) in cash and cash equivalents																	(48)		75		64
Cash and cash equivalents at beginning of year							377								302		377		302		238		238
Cash and cash equivalents at end of year	329								377								329		377		302		238
NextEra Energy (Guarantor) [Member]
Consolidated Statements of Income [Abstract]
Operating revenues																	0		0		0
Operating expenses																	(21)		(15)		(4)
Interest expense																	(11)		(14)		(15)
Equity in earnings of subsidiaries																	1,925		1,878		1,931
Other income (deductions) - net																	7		1		16
Income (loss) before income taxes																	1,900		1,850		1,928
Income tax expense (benefit)																	(11)		(73)		(29)
NET INCOME																	1,911		1,923		1,957
Comprehensive Income (Loss), Net of Tax, Attributable to Parent																	1,810		1,603		1,954
PROPERTY, PLANT AND EQUIPMENT
Electric utility plant in service and other property	31								31								31		31
Less accumulated depreciation and amortization	(7)								(3)								(7)		(3)
Total property, plant and equipment - net	24								28								24		28
CURRENT ASSETS
Cash and cash equivalents	2								1								2		1		0		0
Receivables	398								84								398		84
Other	432								5								432		5
Total current assets	832								90								832		90
OTHER ASSETS
Investment in subsidiaries	16,064								14,879								16,064		14,879
Other	647								513								647		513
Total other assets	16,711								15,392								16,711		15,392
TOTAL ASSETS	17,567								15,510								17,567		15,510
CAPITALIZATION
Common shareholders' equity	16,068								14,943								16,068		14,943
Long-term debt	0								0								0		0
Total capitalization	16,068								14,943								16,068		14,943
CURRENT LIABILITIES
Debt due within one year	0								0								0		0
Accounts payable	1								0								1		0
Other	440								250								440		250
Total current liabilities	441								250								441		250
OTHER LIABILITIES AND DEFERRED CREDITS
Asset retirement obligations	0								0								0		0
Accumulated deferred income taxes	497								68								497		68
Other	561								249								561		249
Total other liabilities and deferred credits	1,058								317								1,058		317
TOTAL CAPITALIZATION AND LIABILITIES	17,567								15,510								17,567		15,510
Condensed Consolidating Statements of Cash Flows [Abstract]
Net cash provided by operating activities																	1,166		1,681		1,178
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures, independent power and other investments and nuclear fuel purchases																	0		(16)		0
Capital contribution to FPL																	(440)		(410)		(660)
Cash grants under the Recovery Act																	0		0		0
Sale of natural gas-fired generating assets																	0		0		0
Change in loan proceeds restricted for construction																	0		0		0
Other - net																	1		16		0
Net cash used in investing activities																	(439)		(410)		(660)
CASH FLOWS FROM FINANCING ACTIVITES
Issuances of long-term debt																	0		0		0
Retirements of long-term debt																	0		0		0
Proceeds from sale of differential membership interests																	0		0		0
Net change in short-term debt																	0		0		0
Dividends on common stock																	(1,004)		(920)		(823)
Other - net																	278		(350)		305
Net cash provided by (used in) financing activities																	(726)		(1,270)		(518)
Net increase (decrease) in cash and cash equivalents																	1		1		0
Cash and cash equivalents at beginning of year							1								0		1		0				0
Cash and cash equivalents at end of year	2								1								2		1		0		0
Capital Holdings Consolidated [Member]
Consolidated Statements of Income [Abstract]
Operating revenues																	4,154		4,740		4,843
Operating expenses																	(3,214)		(3,540)	[3]	(3,462)	[3]
Interest expense																	(619)		(645)		(618)
Equity in earnings of subsidiaries																	0		0		0
Other income (deductions) - net																	313		202	[3]	204	[3]
Income (loss) before income taxes																	634		757		967
Income tax expense (benefit)																	(50)		(53)		(19)
NET INCOME																	684		810		986
Comprehensive Income (Loss), Net of Tax, Attributable to Parent																	611		535		981
PROPERTY, PLANT AND EQUIPMENT
Electric utility plant in service and other property	26,638								22,351								26,638		22,351
Less accumulated depreciation and amortization	(4,800)								(4,143)								(4,800)		(4,143)
Total property, plant and equipment - net	21,838								18,208								21,838		18,208
CURRENT ASSETS
Cash and cash equivalents	287								339								287		339		282		156
Receivables	1,208								1,026								1,208		1,026
Other	1,421								1,075								1,421		1,075
Total current assets	2,916								2,440								2,916		2,440
OTHER ASSETS
Investment in subsidiaries	0								0								0		0
Other	4,749								4,849								4,749		4,849
Total other assets	4,749								4,849								4,749		4,849
TOTAL ASSETS	29,503								25,497								29,503		25,497
CAPITALIZATION
Common shareholders' equity	3,533								4,030								3,533		4,030
Long-term debt	14,848								13,327								14,848		13,327
Total capitalization	18,381								17,357								18,381		17,357
CURRENT LIABILITIES
Debt due within one year	3,624								1,778								3,624		1,778
Accounts payable	667								512								667		512
Other	2,317								1,520								2,317		1,520
Total current liabilities	6,608								3,810								6,608		3,810
OTHER LIABILITIES AND DEFERRED CREDITS
Asset retirement obligations	508								466								508		466
Accumulated deferred income taxes	891								1,376								891		1,376
Other	3,115								2,488								3,115		2,488
Total other liabilities and deferred credits	4,514								4,330								4,514		4,330
TOTAL CAPITALIZATION AND LIABILITIES	29,503								25,497								29,503		25,497
Condensed Consolidating Statements of Cash Flows [Abstract]
Net cash provided by operating activities																	1,091		1,446		1,940
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures, independent power and other investments and nuclear fuel purchases																	(5,176)		(3,109)		(3,140)
Capital contribution to FPL																	0		0		0
Cash grants under the Recovery Act																	196		406		428
Sale of natural gas-fired generating assets																			1,204		0
Change in loan proceeds restricted for construction																	314		(565)		0
Other - net																	20		60		5
Net cash used in investing activities																	(4,646)		(2,004)		(2,707)
CASH FLOWS FROM FINANCING ACTIVITES
Issuances of long-term debt																	5,334		3,100		2,800
Retirements of long-term debt																	(1,562)		(2,076)		(727)
Proceeds from sale of differential membership interests																	808		466		261
Net change in short-term debt																	286		231		(414)
Dividends on common stock																	0		0		0
Other - net																	(1,363)		(1,106)		(1,027)
Net cash provided by (used in) financing activities																	3,503		615		893
Net increase (decrease) in cash and cash equivalents																	(52)		57		126
Cash and cash equivalents at beginning of year							339								282		339		282				156
Cash and cash equivalents at end of year	287								339								287		339		282		156
Other [Member]
Consolidated Statements of Income [Abstract]
Operating revenues																	10,102	[4]	10,601	[4]	10,474	[4]
Operating expenses																	(7,745)	[4]	(8,525)	[4]	(8,624)	[4]
Interest expense																	(408)	[4]	(376)	[4]	(346)	[4]
Equity in earnings of subsidiaries																	(1,925)	[4]	(1,878)	[4]	(1,931)	[4]
Other income (deductions) - net																	45	[4]	23	[4]	21	[4]
Income (loss) before income taxes																	69	[4]	(155)	[4]	(406)	[4]
Income tax expense (benefit)																	753	[4]	655	[4]	580	[4]
NET INCOME																	(684)	[4]	(810)	[4]	(986)	[4]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent																	(611)	[4]	(535)	[4]	(981)	[4]
PROPERTY, PLANT AND EQUIPMENT
Electric utility plant in service and other property	38,248	[4]							35,170	[4]							38,248	[4]	35,170	[4]
Less accumulated depreciation and amortization	(10,697)	[4]							(10,916)	[4]							(10,697)	[4]	(10,916)	[4]
Total property, plant and equipment - net	27,551	[4]							24,254	[4]							27,551	[4]	24,254	[4]
CURRENT ASSETS
Cash and cash equivalents	40	[4]							37	[4]							40	[4]	37	[4]	20	[4]	82	[4]
Receivables	450	[4]							692	[4]							450	[4]	692	[4]
Other	999	[4]							1,613	[4]							999	[4]	1,613	[4]
Total current assets	1,489	[4]							2,342	[4]							1,489	[4]	2,342	[4]
OTHER ASSETS
Investment in subsidiaries	(16,064)	[4]							(14,879)	[4]							(16,064)	[4]	(14,879)	[4]
Other	4,393	[4]							4,464	[4]							4,393	[4]	4,464	[4]
Total other assets	(11,671)	[4]							(10,415)	[4]							(11,671)	[4]	(10,415)	[4]
TOTAL ASSETS	17,369	[4]							16,181	[4]							17,369	[4]	16,181	[4]
CAPITALIZATION
Common shareholders' equity	(3,533)	[4]							(4,030)	[4]							(3,533)	[4]	(4,030)	[4]
Long-term debt	8,329	[4]							7,483	[4]							8,329	[4]	7,483	[4]
Total capitalization	4,796	[4]							3,453	[4]							4,796	[4]	3,453	[4]
CURRENT LIABILITIES
Debt due within one year	558	[4]							379	[4]							558	[4]	379	[4]
Accounts payable	613	[4]							679	[4]							613	[4]	679	[4]
Other	659	[4]							1,601	[4]							659	[4]	1,601	[4]
Total current liabilities	1,830	[4]							2,659	[4]							1,830	[4]	2,659	[4]
OTHER LIABILITIES AND DEFERRED CREDITS
Asset retirement obligations	1,207	[4]							1,145	[4]							1,207	[4]	1,145	[4]
Accumulated deferred income taxes	5,315	[4]							4,237	[4]							5,315	[4]	4,237	[4]
Other	4,221	[4]							4,687	[4]							4,221	[4]	4,687	[4]
Total other liabilities and deferred credits	10,743	[4]							10,069	[4]							10,743	[4]	10,069	[4]
TOTAL CAPITALIZATION AND LIABILITIES	17,369	[4]							16,181	[4]							17,369	[4]	16,181	[4]
Condensed Consolidating Statements of Cash Flows [Abstract]
Net cash provided by operating activities																	1,735	[4]	947	[4]	716	[4]
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures, independent power and other investments and nuclear fuel purchases																	(4,285)	[4]	(3,503)	[4]	(2,706)	[4]
Capital contribution to FPL																	440	[4]	410	[4]	660	[4]
Cash grants under the Recovery Act																	0	[4]	218	[4]	160	[4]
Sale of natural gas-fired generating assets																	0	[4]	0	[4]	0	[4]
Change in loan proceeds restricted for construction																	0	[4]	0	[4]	0	[4]
Other - net																	2	[4]	10	[4]	(31)	[4]
Net cash used in investing activities																	(3,843)	[4]	(2,865)	[4]	(1,917)	[4]
CASH FLOWS FROM FINANCING ACTIVITES
Issuances of long-term debt																	1,296	[4]	840	[4]	924	[4]
Retirements of long-term debt																	(50)	[4]	(45)	[4]	(42)	[4]
Proceeds from sale of differential membership interests																	0	[4]	0	[4]	0	[4]
Net change in short-term debt																	(225)	[4]	229	[4]	(716)	[4]
Dividends on common stock																	0	[4]	0	[4]	0	[4]
Other - net																	1,090	[4]	911	[4]	973	[4]
Net cash provided by (used in) financing activities																	2,111	[4]	1,935	[4]	1,139	[4]
Net increase (decrease) in cash and cash equivalents																	3	[4]	17	[4]	(62)	[4]
Cash and cash equivalents at beginning of year							37	[4]							20	[4]	37	[4]	20	[4]			82	[4]
Cash and cash equivalents at end of year	$ 40	[4]							$ 37	[4]							$ 40	[4]	$ 37	[4]	$ 20	[4]	$ 82	[4]

[1] The sum of the quarterly amounts may not equal the total for the year due to rounding.

[2] In the opinion of NEE and FPL, all adjustments, which consist of normal recurring accruals necessary to present a fair statement of the amounts shown for such periods, have been made. Results of operations for an interim period generally will not give a true indication of results for the year.

[3] (b)Prior year amounts are restated to conform to the current year's presentation. See Note 1 - Basis of Presentation and Note 1 - Sale of Differential Membership Interests.

[4] Represents FPL and consolidating adjustments.