CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2019	Sep. 30, 2018
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income		$ 2,544	$ 5,462	[1],[2]
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization		3,247	2,819	[2]
Nuclear fuel and other amortization		190	183	[2]
Unrealized losses on marked to market derivative contracts – net		135	88	[2]
Foreign currency transaction losses (gains)		10	(5)	[2]
Deferred income taxes		125	1,550	[2]
Cost recovery clauses and franchise fees		93	(79)	[2]
Equity in earnings of equity method investees		80	(371)	[2],[3]
Distributions of earnings from equity method investees		337	242	[2]
Gains on disposal of businesses, assets and investments – net		(415)	(131)	[2]
Gain on NEP deconsolidation		0	(3,927)	[2],[3]
Other - net		(74)	(65)	[2]
Changes in operating assets and liabilities:
Current assets		(310)	(698)	[2]
Noncurrent assets		(87)	(97)	[2]
Current liabilities		356	219	[2]
Noncurrent liabilities		12	41	[2]
Net cash provided by operating activities		6,243	5,231	[2]
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures of FPL		(3,603)	(3,493)	[2]
Acquisition and capital expenditures of Gulf Power		(4,928)	0	[2]
Independent power and other investments of NEER		(3,880)	(4,825)	[2]
Nuclear fuel purchases		(245)	(217)	[2]
Other capital expenditures, acquisitions and other investments		(957)	(722)	[2]
Sale of independent power and other investments of NEER		1,003	327	[2]
Proceeds from sale or maturity of securities in special use funds		2,812	2,579	[2]
Purchases of securities in special use funds		(2,901)	(2,860)	[2]
Distributions from equity method investees of independent power investments		0	637	[2]
Other - net		236	13	[2]
Net cash used in investing activities		(12,463)	(8,561)	[2]
CASH FLOWS FROM FINANCING ACTIVITIES
Issuances of long-term debt		10,923	4,028	[2]
Retirements of long-term debt		(3,561)	(2,593)	[2]
Net change in commercial paper		(234)	773	[2]
Proceeds from other short-term debt		0	625	[2]
Repayments of other short-term debt		(4,725)	(450)	[2]
Payments from related parties under a cash sweep and credit support agreement – net		460	720	[2]
Issuances of common stock - net		1,488	714	[2]
Dividends		(1,797)	(1,570)	[2]
Other - net		(31)	(178)	[2]
Net cash provided by (used in) financing activities		2,523	2,069	[2]
Effects of currency translation on cash, cash equivalents and restricted cash		2	(1)	[2]
Net increase (decrease) in cash, cash equivalents and restricted cash		(3,695)	(1,262)	[2]
Cash, cash equivalents and restricted cash at beginning of period		5,253	1,983	[2]
Cash, cash equivalents and restricted cash at end of period		1,558	721	[2]
SUPPLEMENTAL SCHEDULE OF NONCASH INVESTING AND FINANCING ACTIVITIES
Accrued property additions		2,071	1,963	[2]
FPL [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income	[4]	1,934	1,764	[5],[6]
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization		2,005	1,865	[6]
Nuclear fuel and other amortization		130	111	[6]
Deferred income taxes		48	195	[6]
Cost recovery clauses and franchise fees		104	(79)	[6]
Other - net		(19)	(17)	[6]
Changes in operating assets and liabilities:
Current assets		(318)	(301)	[6]
Noncurrent assets		(47)	(14)	[6]
Current liabilities		403	31	[6]
Noncurrent liabilities		(6)	(3)	[6]
Net cash provided by operating activities		4,234	3,552	[6]
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures of FPL		(3,603)	(3,493)	[6]
Nuclear fuel purchases		(150)	(104)	[6]
Proceeds from sale or maturity of securities in special use funds		1,798	1,623	[6]
Purchases of securities in special use funds		(1,885)	(1,786)	[6]
Other - net		31	205	[6]
Net cash used in investing activities		(3,809)	(3,555)	[6]
CASH FLOWS FROM FINANCING ACTIVITIES
Issuances of long-term debt		2,498	1,594	[6]
Retirements of long-term debt		(85)	(1,580)	[6]
Net change in commercial paper		(811)	(1,482)	[6]
Repayments of other short-term debt		0	(250)	[6]
Capital contributions from NEE		250	1,786	[6]
Dividends		(2,200)	0	[6]
Other - net		(43)	(34)	[6]
Net cash provided by (used in) financing activities		(391)	34	[6]
Net increase (decrease) in cash, cash equivalents and restricted cash		34	31	[6]
Cash, cash equivalents and restricted cash at beginning of period		254	174	[6]
Cash, cash equivalents and restricted cash at end of period		288	205	[6]
SUPPLEMENTAL SCHEDULE OF NONCASH INVESTING AND FINANCING ACTIVITIES
Accrued property additions		557	460	[6]
NEE's noncash contribution of a consolidated subsidiary - net		$ 0	$ 526	[6]

[1] Amounts have been retrospectively adjusted for an accounting standards update related to leases.

[2] Amounts have been retrospectively adjusted for an accounting standards update related to leases.

[3] Amounts have been retrospectively adjusted for an accounting standards update related to leases.

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

[5] Amounts have been retrospectively adjusted for an accounting standards update related to leases.

[6] Amounts have been retrospectively adjusted for an accounting standards update related to leases.