CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
CASH FLOWS FROM OPERATING ACTIVITIES
Net income		$ 3,005	$ 2,762	$ 2,469
NET INCOME		2,912	2,752	2,465
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization		3,077	2,831	2,551
Nuclear fuel and other amortization		300	372	345
Unrealized gains on marked to market derivative contracts - net		(44)	(337)	(411)
Foreign currency transaction losses		13	0	0
Deferred income taxes		1,230	1,162	1,205
Cost recovery clauses and franchise fees		94	176	(67)
Purchased power agreement termination		0	(521)	0
Benefits associated with differential membership interests - net		(309)	(216)	(199)
Gains on disposal of assets - net		(490)	(89)	(133)
Recoverable storm-related costs		(223)	0	0
Other - net		(94)	68	278
Changes in operating assets and liabilities:
Current assets		(120)	73	(172)
Noncurrent assets		(67)	(106)	(220)
Current liabilities		(24)	64	(134)
Noncurrent liabilities		(12)	(123)	(12)
Net cash provided by operating activities		6,336	6,116	5,500
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures of FPL		(3,776)	(3,428)	(3,067)
Independent power and other investments of NEER		(5,396)	(4,505)	(3,588)
Cash grants under the American Recovery and Reinvestment Act of 2009		335	8	343
Nuclear fuel purchases		(283)	(361)	(287)
Other capital expenditures and other investments		(181)	(83)	(75)
Sale of independent power and other investments of NEER		658	52	307
Proceeds from sale or maturity of securities in special use funds and other investments		3,776	4,851	4,621
Purchases of securities in special use funds and other investments		(3,829)	(4,982)	(4,767)
Proceeds from the sale of a noncontrolling interest in subsidiaries		645	345	438
Other - net		(59)	98	(286)
Net cash used in investing activities		(8,110)	(8,005)	(6,361)
CASH FLOWS FROM FINANCING ACTIVITIES
Issuances of long-term debt		5,657	5,772	5,054
Retirements of long-term debt		(3,310)	(3,972)	(4,750)
Proceeds from differential membership investors		1,859	761	978
Payments to differential membership investors		(122)	(92)	(71)
Proceeds from other short-term debt		500	1,225	500
Repayments of other short-term debt		(662)	(813)	(500)
Net change in commercial paper		(106)	(768)	451
Issuances of common stock - net		537	1,298	633
Dividends on common stock		(1,612)	(1,385)	(1,261)
Other - net		(246)	(143)	(34)
Net cash provided by (used in) financing activities		2,495	1,883	1,000
Net increase (decrease) in cash and cash equivalents		721	(6)	139
Cash and cash equivalents at beginning of year		571	577	438
Cash and cash equivalents at end of year		1,292	571	577
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Cash paid for interest (net of amount capitalized)		1,193	1,143	1,181
Cash paid for income taxes - net		91	33	46
SUPPLEMENTAL SCHEDULE OF NONCASH INVESTING AND FINANCING ACTIVITIES
Accrued property additions		3,626	2,616	956
Assumption of debt/acquisition holdbacks in connection with Texas pipeline acquisition		0	1,078	0
Decrease in property, plant and equipment - net as a result of cash grants under the American Recovery and Reinvestment Act of 2009		419	224	161
Decrease (increase) in property, plant and equipment as a result of a settlement		(72)	(45)	181
Proceeds from differential membership investors used to reduce debt		100	0	0
FPL [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
NET INCOME	[1]	1,727	1,648	1,517
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization		1,651	1,576	1,432
Nuclear fuel and other amortization		218	209	201
Deferred income taxes		932	504	601
Cost recovery clauses and franchise fees		94	176	(67)
Purchased power agreement termination		0	(521)	0
Recoverable storm-related costs		(223)	0	0
Other - net		42	(56)	94
Changes in operating assets and liabilities:
Current assets		26	(89)	(125)
Noncurrent assets		(31)	(53)	(103)
Current liabilities		16	40	(70)
Noncurrent liabilities		(86)	(41)	(26)
Net cash provided by operating activities		4,366	3,393	3,454
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures of FPL		(3,776)	(3,428)	(3,067)
Nuclear fuel purchases		(158)	(205)	(174)
Proceeds from sale or maturity of securities in special use funds and other investments		2,495	3,731	3,349
Purchases of securities in special use funds and other investments		(2,506)	(3,792)	(3,414)
Other - net		(15)	19	(268)
Net cash used in investing activities		(3,960)	(3,675)	(3,574)
CASH FLOWS FROM FINANCING ACTIVITIES
Issuances of long-term debt		309	1,084	997
Retirements of long-term debt		(262)	(551)	(355)
Proceeds from other short-term debt		500	100	0
Repayments of other short-term debt		(450)	0	0
Net change in commercial paper		212	(1,086)	938
Capital contributions from NEE		600	1,454	100
Dividends on common stock		(1,300)	(700)	(1,550)
Other - net		(5)	(10)	(15)
Net cash provided by (used in) financing activities		(396)	291	115
Net increase (decrease) in cash and cash equivalents		10	9	(5)
Cash and cash equivalents at beginning of year		23	14	19
Cash and cash equivalents at end of year		33	23	14
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Cash paid for interest (net of amount capitalized)		434	435	417
Cash paid for income taxes - net		147	439	342
SUPPLEMENTAL SCHEDULE OF NONCASH INVESTING AND FINANCING ACTIVITIES
Accrued property additions		$ 664	$ 474	$ 404

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