Summarized Financial Information of NEECH (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended																12 Months Ended
	Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2012		Sep. 30, 2012		Jun. 30, 2012		Mar. 31, 2012		Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Consolidated Statements of Income [Abstract]
Operating revenues	$ 3,630	[1],[2]	$ 4,394	[1],[2]	$ 3,833	[1],[2]	$ 3,279	[1],[2]	$ 3,375	[1],[2]	$ 3,843	[1],[2]	$ 3,667	[1],[2]	$ 3,371	[1],[2]	$ 15,136	$ 14,256	$ 15,341
Operating expenses																	(11,895)	(10,980)	(12,080)
Interest expense																	(1,121)	(1,038)	(1,035)
Equity in earnings of subsidiaries																	0	0	0
Other income (deductions) - net																	401	365	226
Income (loss) from continuing operations before income taxes																	2,521	2,603	2,452
Income tax expense (benefit)																	801	692	529
Income (loss) from continuing operations	327	[1],[2]	698	[1],[2]	610	[1],[2]	84	[1],[2],[3]									1,720	1,911	1,923
NET GAIN FROM DISCONTINUED OPERATIONS, NET OF INCOME TAXES																	188	0	0
NET INCOME	327	[1],[2]	698	[1],[2]	610	[1],[2]	272	[1],[2],[3],[4]	429	[1],[2]	415	[1],[2]	607	[1],[2]	461	[1],[2]	1,908	1,911	1,923
COMPREHENSIVE INCOME																	2,219	1,810	1,603
PROPERTY, PLANT AND EQUIPMENT
Electric plant in service and other property	69,448								64,917								69,448	64,917
Less accumulated depreciation and amortization	(16,728)								(15,504)								(16,728)	(15,504)
Total property, plant and equipment - net	52,720								49,413								52,720	49,413
CURRENT ASSETS
Cash and cash equivalents	438								329								438	329	377
Receivables	2,289								2,056								2,289	2,056
Other	3,115								2,852								3,115	2,852
Total current assets	5,842								5,237								5,842	5,237
OTHER ASSETS
Investment in subsidiaries	0								0								0	0
Other	10,744								9,789								10,744	9,789
Total other assets	10,744								9,789								10,744	9,789
TOTAL ASSETS	69,306								64,439								69,306	64,439
CAPITALIZATION
Common shareholders' equity	18,040								16,068								18,040	16,068
Long-term debt	23,969								23,177								23,969	23,177
Total capitalization	42,009								39,245								42,009	39,245
CURRENT LIABILITIES
Debt due within one year	4,457								4,182								4,457	4,182
Accounts payable	1,200								1,281								1,200	1,281
Other	3,532								3,416								3,532	3,416
Total current liabilities	9,189								8,879								9,189	8,879
OTHER LIABILITIES AND DEFERRED CREDITS
Asset retirement obligations	1,850								1,715								1,850	1,715	1,611
Deferred income taxes	8,144								6,703								8,144	6,703
Other	8,114								7,897								8,114	7,897
Total other liabilities and deferred credits	18,108								16,315								18,108	16,315
COMMITMENTS AND CONTINGENCIES
TOTAL CAPITALIZATION AND LIABILITIES	69,306								64,439								69,306	64,439
Condensed Consolidating Statements of Cash Flows [Abstract]
Net cash provided by operating activities																	5,102	3,992	4,074
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures, independent power and other investments and nuclear fuel purchases																	(6,682)	(9,461)	(6,628)
Capital contributions from NEE																	0	0	0
Cash grants under the Recovery Act																	165	196	624
Sale of independent power investments																	165	0	1,204
Change in loan proceeds restricted for construction																	228	314	(565)
Other - net																	1	23	86
Net cash used in investing activities																	(6,123)	(8,928)	(5,279)
CASH FLOWS FROM FINANCING ACTIVITIES
Issuances of long-term debt																	4,371	6,630	3,940
Retirements of long-term debt																	(2,396)	(1,612)	(2,121)
Proceeds from sale of differential membership interests																	448	808	466
Net change in short-term debt																	(720)	61	460
Issuances of common stock - net																	842	405	48
Dividends on common stock																	(1,122)	(1,004)	(920)
Other - net																	(293)	(400)	(593)
Net cash provided by (used in) financing activities																	1,130	4,888	1,280
Net increase (decrease) in cash and cash equivalents																	109	(48)	75
Cash and cash equivalents at beginning of year							329								377		329	377	302
Cash and cash equivalents at end of year	438								329								438	329	377
NEE (Guarantor) [Member]
Consolidated Statements of Income [Abstract]
Operating revenues																	0	0	0
Operating expenses																	(18)	(21)	(15)
Interest expense																	(8)	(11)	(14)
Equity in earnings of subsidiaries																	1,915	1,925	1,878
Other income (deductions) - net																	1	7	1
Income (loss) from continuing operations before income taxes																	1,890	1,900	1,850
Income tax expense (benefit)																	(5)	(11)	(73)
Income (loss) from continuing operations																	1,895	1,911	1,923
NET GAIN FROM DISCONTINUED OPERATIONS, NET OF INCOME TAXES																	13	0	0
NET INCOME																	1,908	1,911	1,923
COMPREHENSIVE INCOME																	2,219	1,810	1,603
PROPERTY, PLANT AND EQUIPMENT
Electric plant in service and other property	31								31								31	31
Less accumulated depreciation and amortization	(10)								(7)								(10)	(7)
Total property, plant and equipment - net	21								24								21	24
CURRENT ASSETS
Cash and cash equivalents	0								2								0	2	1
Receivables	78								398								78	398
Other	6								432								6	432
Total current assets	84								832								84	832
OTHER ASSETS
Investment in subsidiaries	17,910								16,064								17,910	16,064
Other	694								647								694	647
Total other assets	18,604								16,711								18,604	16,711
TOTAL ASSETS	18,709								17,567								18,709	17,567
CAPITALIZATION
Common shareholders' equity	18,040								16,068								18,040	16,068
Long-term debt	0								0								0	0
Total capitalization	18,040								16,068								18,040	16,068
CURRENT LIABILITIES
Debt due within one year	0								0								0	0
Accounts payable	0								1								0	1
Other	199								440								199	440
Total current liabilities	199								441								199	441
OTHER LIABILITIES AND DEFERRED CREDITS
Asset retirement obligations	0								0								0	0
Deferred income taxes	166								497								166	497
Other	304								561								304	561
Total other liabilities and deferred credits	470								1,058								470	1,058
TOTAL CAPITALIZATION AND LIABILITIES	18,709								17,567								18,709	17,567
Condensed Consolidating Statements of Cash Flows [Abstract]
Net cash provided by operating activities																	1,147	1,166	1,681
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures, independent power and other investments and nuclear fuel purchases																	0	0	(16)
Capital contributions from NEE																	(777)	(440)	(410)
Cash grants under the Recovery Act																	0	0	0
Sale of independent power investments																	0	0	0
Change in loan proceeds restricted for construction																	0	0	0
Other - net																	0	1	16
Net cash used in investing activities																	(777)	(439)	(410)
CASH FLOWS FROM FINANCING ACTIVITIES
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
Issuances of common stock - net																	842	405	48
Dividends on common stock																	(1,122)	(1,004)	(920)
Other - net																	(92)	(127)	(398)
Net cash provided by (used in) financing activities																	(372)	(726)	(1,270)
Net increase (decrease) in cash and cash equivalents																	(2)	1	1
Cash and cash equivalents at beginning of year							2								1		2	1	0
Cash and cash equivalents at end of year	0								2								0	2	1
NEECH [Member]
Condensed Financial Statements, Captions [Line Items]
Ownership interest	100.00%																100.00%
Consolidated Statements of Income [Abstract]
Operating revenues																	4,703	4,154	4,740
Operating expenses																	(3,984)	(3,214)	(3,540)
Interest expense																	(705)	(619)	(645)
Equity in earnings of subsidiaries																	0	0	0
Other income (deductions) - net																	349	313	202
Income (loss) from continuing operations before income taxes																	363	634	757
Income tax expense (benefit)																	(29)	(50)	(53)
Income (loss) from continuing operations																	392	684	810
NET GAIN FROM DISCONTINUED OPERATIONS, NET OF INCOME TAXES																	175	0	0
NET INCOME																	567	684	810
COMPREHENSIVE INCOME																	781	611	535
PROPERTY, PLANT AND EQUIPMENT
Electric plant in service and other property	29,511								26,638								29,511	26,638
Less accumulated depreciation and amortization	(5,774)								(4,800)								(5,774)	(4,800)
Total property, plant and equipment - net	23,737								21,838								23,737	21,838
CURRENT ASSETS
Cash and cash equivalents	418								287								418	287	339
Receivables	1,542								1,208								1,542	1,208
Other	1,814								1,421								1,814	1,421
Total current assets	3,774								2,916								3,774	2,916
OTHER ASSETS
Investment in subsidiaries	0								0								0	0
Other	5,129								4,749								5,129	4,749
Total other assets	5,129								4,749								5,129	4,749
TOTAL ASSETS	32,640								29,503								32,640	29,503
CAPITALIZATION
Common shareholders' equity	4,816								3,533								4,816	3,533
Long-term debt	15,496								14,848								15,496	14,848
Total capitalization	20,312								18,381								20,312	18,381
CURRENT LIABILITIES
Debt due within one year	3,896								3,624								3,896	3,624
Accounts payable	589								667								589	667
Other	2,203								2,317								2,203	2,317
Total current liabilities	6,688								6,608								6,688	6,608
OTHER LIABILITIES AND DEFERRED CREDITS
Asset retirement obligations	565								508								565	508
Deferred income taxes	1,963								891								1,963	891
Other	3,112								3,115								3,112	3,115
Total other liabilities and deferred credits	5,640								4,514								5,640	4,514
TOTAL CAPITALIZATION AND LIABILITIES	32,640								29,503								32,640	29,503
Condensed Consolidating Statements of Cash Flows [Abstract]
Net cash provided by operating activities																	1,466	1,091	1,446
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures, independent power and other investments and nuclear fuel purchases																	(3,756)	(5,176)	(3,109)
Capital contributions from NEE																	0	0	0
Cash grants under the Recovery Act																	165	196	406
Sale of independent power investments																	165	0	1,204
Change in loan proceeds restricted for construction																	228	314	(565)
Other - net																	17	20	60
Net cash used in investing activities																	(3,181)	(4,646)	(2,004)
CASH FLOWS FROM FINANCING ACTIVITIES
Issuances of long-term debt																	3,874	5,334	3,100
Retirements of long-term debt																	(1,943)	(1,562)	(2,076)
Proceeds from sale of differential membership interests																	448	808	466
Net change in short-term debt																	(819)	286	231
Issuances of common stock - net																	0	0	0
Dividends on common stock																	0	0	0
Other - net																	286	(1,363)	(1,106)
Net cash provided by (used in) financing activities																	1,846	3,503	615
Net increase (decrease) in cash and cash equivalents																	131	(52)	57
Cash and cash equivalents at beginning of year							287								339		287	339	282
Cash and cash equivalents at end of year	418								287								418	287	339
Other [Member]
Consolidated Statements of Income [Abstract]
Operating revenues																	10,433	10,102	10,601
Operating expenses																	(7,893)	(7,745)	(8,525)
Interest expense																	(408)	(408)	(376)
Equity in earnings of subsidiaries																	(1,915)	(1,925)	(1,878)
Other income (deductions) - net																	51	45	23
Income (loss) from continuing operations before income taxes																	268	69	(155)
Income tax expense (benefit)																	835	753	655
Income (loss) from continuing operations																	(567)	(684)	(810)
NET GAIN FROM DISCONTINUED OPERATIONS, NET OF INCOME TAXES																	0	0	0
NET INCOME																	(567)	(684)	(810)
COMPREHENSIVE INCOME																	(781)	(611)	(535)
PROPERTY, PLANT AND EQUIPMENT
Electric plant in service and other property	39,906								38,248								39,906	38,248
Less accumulated depreciation and amortization	(10,944)								(10,697)								(10,944)	(10,697)
Total property, plant and equipment - net	28,962								27,551								28,962	27,551
CURRENT ASSETS
Cash and cash equivalents	20								40								20	40	37
Receivables	669								450								669	450
Other	1,295								999								1,295	999
Total current assets	1,984								1,489								1,984	1,489
OTHER ASSETS
Investment in subsidiaries	(17,910)								(16,064)								(17,910)	(16,064)
Other	4,921								4,393								4,921	4,393
Total other assets	(12,989)								(11,671)								(12,989)	(11,671)
TOTAL ASSETS	17,957								17,369								17,957	17,369
CAPITALIZATION
Common shareholders' equity	(4,816)								(3,533)								(4,816)	(3,533)
Long-term debt	8,473								8,329								8,473	8,329
Total capitalization	3,657								4,796								3,657	4,796
CURRENT LIABILITIES
Debt due within one year	561								558								561	558
Accounts payable	611								613								611	613
Other	1,130								659								1,130	659
Total current liabilities	2,302								1,830								2,302	1,830
OTHER LIABILITIES AND DEFERRED CREDITS
Asset retirement obligations	1,285								1,207								1,285	1,207
Deferred income taxes	6,015								5,315								6,015	5,315
Other	4,698								4,221								4,698	4,221
Total other liabilities and deferred credits	11,998								10,743								11,998	10,743
TOTAL CAPITALIZATION AND LIABILITIES	17,957								17,369								17,957	17,369
Condensed Consolidating Statements of Cash Flows [Abstract]
Net cash provided by operating activities																	2,489	1,735	947
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures, independent power and other investments and nuclear fuel purchases																	(2,926)	(4,285)	(3,503)
Capital contributions from NEE																	777	440	410
Cash grants under the Recovery Act																	0	0	218
Sale of independent power investments																	0	0	0
Change in loan proceeds restricted for construction																	0	0	0
Other - net																	(16)	2	10
Net cash used in investing activities																	(2,165)	(3,843)	(2,865)
CASH FLOWS FROM FINANCING ACTIVITIES
Issuances of long-term debt																	497	1,296	840
Retirements of long-term debt																	(453)	(50)	(45)
Proceeds from sale of differential membership interests																	0	0	0
Net change in short-term debt																	99	(225)	229
Issuances of common stock - net																	0	0	0
Dividends on common stock																	0	0	0
Other - net																	(487)	1,090	911
Net cash provided by (used in) financing activities																	(344)	2,111	1,935
Net increase (decrease) in cash and cash equivalents																	(20)	3	17
Cash and cash equivalents at beginning of year							40								37		40	37	20
Cash and cash equivalents at end of year	$ 20								$ 40								$ 20	$ 40	$ 37

[1] 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.

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

[3] First quarter of 2013 includes impairment and other related charges. See Note 4 - Nonrecurring Fair Value Measurements.

[4] First quarter of 2013 includes an after-tax net gain from discontinued operations. See Note 6.