CONSOLIDATED STATEMENTS OF COMMON SHAREHOLDERS' EQUITY - USD ($) $ in Millions		Total		Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]		Retained Earnings [Member]		Total common Shareholders' Equity [Member]		Noncontrolling Interest [Member]		FPL[Member]		FPL[Member] Common Stock [Member]	FPL[Member] Additional Paid-in Capital [Member]	FPL[Member] Retained Earnings [Member]
Common Stock, Dividends, Per Share, Cash Paid		$ 3.48
Balances (in shares) at Dec. 31, 2015				461,000,000
Beginning Balance at Dec. 31, 2015		$ 23,112	[1]	$ 5	$ 8,596	$ (167)		$ 14,140	[1]	$ 22,574	[1]	$ 538	[1]
BEGINNING BALANCE at Dec. 31, 2015														$ 15,553		$ 1,373	$ 7,733	$ 6,447
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		2,999	[2],[3],[4]					2,906	[1]	2,906	[1]	93	[1]	1,727	[5],[6],[7]
NET INCOME		2,906	[2]															1,727
Issuances of common stock, net of issuance cost of less than $1					527					527	[1]
Issuances of common stock, net of issuance cost (in shares)				6,000,000
Share-based payment activity					135					135	[1]
Exercise of stock options and other incentive plan activity (in shares)				1,000,000
Dividends on common stock	[1],[8]							(1,612)		(1,612)
Other comprehensive income (loss)		(97)	[3]			(97)				(97)	[1]
Premium on equity units					(200)					(200)	[1]
Sale of NEER assets to NEP	[1]											433
Adoption of accounting standards update(a)	[1]							32		32		1
Capital contributions from NEE														600	[6]		600
Dividends to NEE		1,612	[4]											1,300	[6]			(1,300)
Other (in shares)				0
Other					(110)			18	[1]	(92)	[1]	(74)	[1]				(1)	1
ENDING BALANCE at Dec. 31, 2016														16,580		1,373	8,332	6,875
Ending Balance at Dec. 31, 2016		$ 25,358	[1]	$ 5	8,948	(70)		15,484	[1]	24,367	[1]	991	[1]
Balance (in shares) at Dec. 31, 2016				468,000,000
Common Stock, Dividends, Per Share, Cash Paid		$ 3.93
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		$ 5,323	[2],[3],[4]					5,380	[1]	5,380	[1]	(57)	[1]	1,880	[5],[6],[7]
NET INCOME		5,380	[2]															1,880
Issuances of common stock, net of issuance cost of less than $1					33					33	[1]
Issuances of common stock, net of issuance cost (in shares)				2,000,000
Share-based payment activity					122					122	[1]
Exercise of stock options and other incentive plan activity (in shares)				1,000,000
Dividends on common stock	[1],[8]							(1,845)		(1,845)
Other comprehensive income (loss)		(192)	[3]			(181)				181	[1]	(11)	[1]
Sale of NEER assets to NEP	[1]											460
Capital contributions from NEE	[6]													0
Dividends to NEE		1,845	[4]											1,450	[6]			(1,450)
Other (in shares)				0
Other					(3)			1	[1]	(2)	[1]	(110)	[1]				(41)	71
ENDING BALANCE at Dec. 31, 2017		28,236	[9]											17,040		1,373	8,291	7,376
Ending Balance at Dec. 31, 2017		$ 29,531	[1],[9]	$ 5	9,100	111		19,020	[1]	28,236	[1]	1,295	[1]	$ 17,040	[10]
Balance (in shares) at Dec. 31, 2017		471,000,000		471,000,000										1,000
Common Stock, Dividends, Per Share, Cash Paid		$ 4.44
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		$ 5,776						6,638	[1]	6,638	[1]	(862)	[1]	$ 2,171	[7]
NET INCOME		6,638																2,171
Issuances of common stock, net of issuance cost of less than $1					700					700	[1]
Issuances of common stock, net of issuance cost (in shares)				6,000,000
Share-based payment activity					121					121	[1]
Exercise of stock options and other incentive plan activity (in shares)				1,000,000
Dividends on common stock	[1],[8]							(2,101)		(2,101)
Other comprehensive income (loss)		29				29				29	[1]
Impact of NEP deconsolidation		(2,700)				58	[11]			58	[1],[11]	(2,700)	[1],[11]
Sales of differential membership interests to NEP	[1]											(941)
Adoption of accounting standards update(a)	[12]				590	(328)		280	[1]	542	[1]	5,303	[1]
Differential membership interests activity					(21)					(21)	[1]	1,243	[1]
Capital contributions from NEE																	1,785
Dividends to NEE		2,101												500				(500)
NEE's contribution of a consolidated subsidiary																	526
Other					0			0	[1]	0	[1]	(69)	[1]				(1)	(7)
ENDING BALANCE at Dec. 31, 2018		34,144												21,014		$ 1,373	$ 10,601	$ 9,040
Ending Balance at Dec. 31, 2018		$ 37,413	[1]	$ 5	$ 10,490	$ (188)		$ 23,837	[1]	$ 34,144	[1]	$ 3,269	[1]	$ 21,014
Balance (in shares) at Dec. 31, 2018		478,000,000		478,000,000										1,000

[1] Prior period amounts have been retrospectively adjusted as discussed in Note 14.

[2] Amounts have been retrospectively adjusted as discussed in Note 14 and Note 3 - Amendments to Presentation of Retirement Benefits.

[3] Amounts have been retrospectively adjusted as discussed in Note 14.

[4] Amounts have been retrospectively adjusted as discussed in Note 14.

[5] Amounts have been retrospectively adjusted as discussed in Note 14.

[6] Amounts have been retrospectively adjusted as discussed in Note 14.

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

[8] Dividends per share were $4.44, $3.93 and $3.48 for the years ended December 31, 2018, 2017 and 2016, respectively

[9] Amounts have been retrospectively adjusted as discussed in Note 14.

[10] Amounts have been retrospectively adjusted as discussed in Note 14.

[11] See Note 1 - NextEra Energy Partners, LP.

[12] See Note 1 - NextEra Energy Partners, LP and - Sales of Differential Membership Interests, Note 2, Note 5 - Financial Instruments Accounting Standards Update and Note 6.