CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
CASH FLOWS FROM OPERATING ACTIVITIES
Net income		$ 2,762	$ 2,469	$ 1,908
NET INCOME		2,752	2,465	1,908
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization		2,831	2,551	2,163
Nuclear fuel and other amortization		372	345	358
Impairment charges		2	11	300
Unrealized gains on marked to market energy contracts		(337)	(411)	(10)
Deferred income taxes		1,162	1,205	853
Cost recovery clauses and franchise fees		176	(67)	(166)
Purchased power agreement termination		(521)	0	0
Benefits associated with differential membership interests - net		(216)	(199)	(165)
Gain from discontinued operations, net of income taxes		0	0	(231)
Other - net		(23)	134	144
Changes in operating assets and liabilities:
Customer and other receivables		90	(7)	(268)
Materials, supplies and fossil fuel inventory		17	(135)	(81)
Other current assets		(34)	(30)	8
Other assets		(106)	(220)	8
Accounts payable and customer deposits		(206)	110	122
Margin cash collateral		81	(59)	156
Income taxes		28	(75)	(56)
Other current liabilities		161	(110)	143
Other liabilities		(123)	(12)	(84)
Net cash provided by operating activities		6,116	5,500	5,102
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures of FPL		(3,428)	(3,067)	(2,691)
Independent power and other investments of NEER		(4,505)	(3,588)	(3,478)
Cash grants under the American Recovery and Reinvestment Act of 2009		8	343	165
Nuclear fuel purchases		(361)	(287)	(371)
Other capital expenditures and other investments		(83)	(75)	(142)
Sale of independent power and other investments of NEER		52	307	165
Change in loan proceeds restricted for construction		(9)	(40)	228
Proceeds from sale or maturity of securities in special use funds and other investments		4,851	4,621	4,405
Purchases of securities in special use funds and other investments		(4,982)	(4,767)	(4,470)
Proceeds from the sale of a noncontrolling interest in subsidiaries		345	438	0
Other - net		107	(246)	66
Net cash used in investing activities		(8,005)	(6,361)	(6,123)
CASH FLOWS FROM FINANCING ACTIVITIES
Issuances of long-term debt		5,772	5,054	4,371
Retirements of long-term debt		(3,972)	(4,750)	(2,396)
Proceeds from differential membership investors		761	978	448
Payments to differential membership investors		(92)	(71)	(63)
Proceeds from Notes Payable		1,225	500	0
Repayments of Notes Payable		(813)	(500)	(200)
Net change in commercial paper		(768)	451	(520)
Issuances of common stock - net		1,298	633	842
Dividends on common stock		(1,385)	(1,261)	(1,122)
Other - net		(143)	(34)	(230)
Net cash provided by (used in) financing activities		1,883	1,000	1,130
Net increase (decrease) in cash and cash equivalents		(6)	139	109
Cash and cash equivalents at beginning of year		577	438	329
Cash and cash equivalents at end of year		571	577	438
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Cash paid for interest (net of amount capitalized)		1,143	1,181	1,070
Cash paid (received) for income taxes - net		33	46	(20)
SUPPLEMENTAL SCHEDULE OF NONCASH INVESTING AND FINANCING ACTIVITIES
Accrued property additions		2,616	956	1,098
Sale of hydropower generation plants through assumption of debt by buyer		0	0	700
Assumption of debt and acquisition holdbacks in connection with the acquisition of the Texas pipeline business		1,078	0	0
Decrease (increase) in property, plant and equipment as a result of a settlement		(45)	181	0
FPL [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
NET INCOME	[1]	1,648	1,517	1,349
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization		1,576	1,432	1,159
Nuclear fuel and other amortization		209	201	184
Deferred income taxes		504	601	617
Cost recovery clauses and franchise fees		176	(67)	(166)
Purchased power agreement termination		(521)	0	0
Other - net		(56)	94	46
Changes in operating assets and liabilities:
Customer and other receivables		(79)	(10)	(5)
Materials, supplies and fossil fuel inventory		22	(106)	(16)
Other current assets		(32)	(9)	15
Other assets		(53)	(103)	(12)
Accounts payable and customer deposits		(72)	28	(1)
Income taxes		14	(34)	384
Other current liabilities		98	(64)	11
Other liabilities		(41)	(26)	(7)
Net cash provided by operating activities		3,393	3,454	3,558
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures of FPL		(3,428)	(3,067)	(2,691)
Nuclear fuel purchases		(205)	(174)	(212)
Proceeds from sale or maturity of securities in special use funds and other investments		3,731	3,349	3,342
Purchases of securities in special use funds and other investments		(3,792)	(3,414)	(3,389)
Other - net		19	(268)	30
Net cash used in investing activities		(3,675)	(3,574)	(2,920)
CASH FLOWS FROM FINANCING ACTIVITIES
Issuances of long-term debt		1,084	997	497
Retirements of long-term debt		(551)	(355)	(453)
Proceeds from Notes Payable		100	0	0
Net change in commercial paper		(1,086)	938	99
Capital contributions from NEE		1,454	100	275
Dividends on common stock		(700)	(1,550)	(1,070)
Other - net		(10)	(15)	(7)
Net cash provided by (used in) financing activities		291	115	(659)
Net increase (decrease) in cash and cash equivalents		9	(5)	(21)
Cash and cash equivalents at beginning of year		14	19	40
Cash and cash equivalents at end of year		23	14	19
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Cash paid for interest (net of amount capitalized)		435	417	410
Cash paid (received) for income taxes - net		439	342	(166)
SUPPLEMENTAL SCHEDULE OF NONCASH INVESTING AND FINANCING ACTIVITIES
Accrued property additions		$ 474	$ 404	$ 386

[1] FPL's comprehensive income is the same as reported net income