CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
PROPERTY, PLANT AND EQUIPMENT
Electric plant in service and other property	$ 85,337	$ 80,150
Nuclear fuel	1,767	2,131
Construction work in progress	6,679	4,732
Accumulated depreciation and amortization	21,367	20,101
Total property, plant and equipment - net	72,416	66,912
CURRENT ASSETS
Cash and cash equivalents	1,714	1,292
Customer receivables, net of allowances	2,220	1,784
Other receivables	517	655
Materials, supplies and fossil fuel inventory	1,273	1,289
Regulatory assets	336	524
Derivatives	489	885
Assets held for sale	140	452
Other	468	528
Total current assets	7,157	7,409
OTHER ASSETS
Special use funds	6,003	5,434
Other investments ($470 and $479 related to a VIE, respectively)	2,959	2,482
Prepaid benefit costs	1,427	1,177
Regulatory assets ($37 and $107 related to a VIE, respectively)	2,469	1,894
Derivatives	1,315	1,350
Other	4,081	3,335
Total other assets	18,254	15,672
TOTAL ASSETS	97,827	89,993
CAPITALIZATION
Common stock	5	5
Additional paid-in capital	9,100	8,948
Retained earnings	18,992	15,458
Accumulated other comprehensive income (loss)	111	(70)
Total common shareholders' equity	28,208	24,341
Noncontrolling interests	1,290	990
Total equity	29,498	25,331
Long-term debt	31,463	27,818
Total capitalization	60,961	53,149
CURRENT LIABILITIES
Commercial paper	1,687	268
Other short-term debt	255	150
Current maturities of long-term debt	1,676	2,604
Accounts payable	3,235	3,447
Customer deposits	448	470
Accrued interest and taxes	622	480
Derivatives	364	404
Accrued construction-related expenditures	1,033	1,120
Regulatory liabilities	346	299
Liabilities associated with assets held for sale	18	451
Other	1,548	1,226
Total current liabilities	11,232	10,919
OTHER LIABILITIES AND DEFERRED CREDITS
Asset retirement obligations	3,031	2,736
Deferred income taxes	5,754	11,101
Regulatory liabilities	8,765	4,906
Derivatives	535	477
Deferral related to differential membership interests - VIEs	5,403	4,656
Other	2,146	2,049
Total other liabilities and deferred credits	25,634	25,925
COMMITMENTS AND CONTINGENCIES
TOTAL CAPITALIZATION AND LIABILITIES	97,827	89,993
FPL[Member]
ELECTRIC UTILITY PLANT AND OTHER PROPERTY
Plant in service and other property	47,167	44,966
Nuclear fuel	1,192	1,308
Construction work in progress	3,623	2,039
Accumulated depreciation and amortization	(12,802)	(12,304)
Total electric utility plant and other property - net	39,180	36,009
CURRENT ASSETS
Cash and cash equivalents	33	33
Customer receivables, net of allowances	1,073	768
Other receivables	160	148
Materials, supplies and fossil fuel inventory	840	851
Regulatory assets	335	524
Derivatives	2	209
Other	241	213
Total current assets	2,684	2,746
OTHER ASSETS
Special use funds	4,090	3,665
Prepaid benefit costs	1,351	1,301
Regulatory assets ($37 and $107 related to a VIE, respectively)	2,249	1,573
Other	690	207
Total other assets	8,380	6,746
TOTAL ASSETS	50,244	45,501
CAPITALIZATION
Common stock	1,373	1,373
Additional paid-in capital	8,291	8,332
Retained earnings	7,376	6,875
Total common shareholders' equity	17,040	16,580
Total equity	17,040	16,580
Long-term debt	11,236	9,705
Total capitalization	28,276	26,285
CURRENT LIABILITIES
Commercial paper	1,687	268
Other short-term debt	250	150
Current maturities of long-term debt	466	367
Accounts payable	893	837
Customer deposits	445	466
Accrued interest and taxes	439	240
Accrued construction-related expenditures	300	262
Regulatory liabilities	333	294
Other	984	497
Total current liabilities	5,797	3,381
OTHER LIABILITIES AND DEFERRED CREDITS
Asset retirement obligations	2,047	1,919
Deferred income taxes	5,005	8,541
Regulatory liabilities	8,642	4,893
Other	477	482
Total other liabilities and deferred credits	16,171	15,835
COMMITMENTS AND CONTINGENCIES
TOTAL CAPITALIZATION AND LIABILITIES	$ 50,244	$ 45,501