CONSOLIDATED STATEMENTS OF COMMON SHAREHOLDERS' EQUITY - USD ($) $ in Millions		Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Additional Paid-in Capital [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Accumulated Other Comprehensive Income (Loss) [Member]		Accumulated Other Comprehensive Income (Loss) [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Retained Earnings [Member]	Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]		Total common Shareholders' Equity [Member]		Total common Shareholders' Equity [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]		Noncontrolling Interest [Member]		Noncontrolling Interest [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	FPL[Member]		FPL[Member] Common Stock [Member]	FPL[Member] Additional Paid-in Capital [Member]	FPL[Member] Retained Earnings [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Temporary Equity, Carrying Amount, Including Portion Attributable to Noncontrolling Interests		$ 0
Balances (in shares) at Dec. 31, 2017			1,883,000,000
Beginning Balance at Dec. 31, 2017		29,531	$ 19	$ 9,086	$ 590	$ 111		$ (328)	$ 19,020	$ 280		$ 28,236		$ 542		$ 1,295		$ 5,303
BEGINNING BALANCE at Dec. 31, 2017																			$ 17,040		$ 1,373	$ 8,291	$ 7,376
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		5,776							6,638			6,638							2,171	[1]
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest																(862)
NET INCOME		6,638																					2,171
Issuances of common stock - net				700								700
Issuances of common stock, net of issuance cost (in shares)			24,000,000
Share-based payment activity				121								121
Share-based payment activity (in shares)			4,000,000
Dividends on common stock	[2]								(2,101)			(2,101)
Other comprehensive income (loss)		(29)				(29)						(29)				0
Impact of NEP deconsolidation				0		58	[3]		0			58	[3]			(2,700)	[3]
Sales of differential membership interests to NEP																(941)
Other differential membership interests activity				(21)								(21)				1,243
Capital contributions from NEE																			1,785			1,785
Dividends to NEE		2,101																	500				(500)
NEE's contribution of a consolidated subsidiary																						526
Other (in shares)			1,000,000
Other				0					0			0				(69)						(1)	(7)
ENDING BALANCE at Dec. 31, 2018																			21,014		1,373	10,601	9,040
Ending Balance at Dec. 31, 2018		37,413	$ 19	10,476		(188)			23,837			34,144				3,269
Balance (in shares) at Dec. 31, 2018			1,912,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Temporary Equity, Interest in Subsidiary Earnings		477
Temporary Equity, Other Changes		$ (9)
Common Stock, Dividends, Per Share, Cash Paid		$ 1.11
Temporary Equity, Carrying Amount, Including Portion Attributable to Noncontrolling Interests		$ 468
Net income (loss)		3,388							3,769			3,769							2,334	[1]
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest																(371)
NET INCOME		3,769																					2,334
Issuances of common stock - net				1,470								1,470
Issuances of common stock, net of issuance cost (in shares)			40,000,000
Share-based payment activity				164								164
Share-based payment activity (in shares)			4,000,000
Dividends on common stock	[2]								(2,408)			(2,408)
Other comprehensive income (loss)		21				20						20				1
Premium on equity units				(120)								(120)
Other differential membership interests activity				(20)								(20)				1,270
Capital contributions from NEE																			250			250
Dividends to NEE		2,408																	2,200				(2,200)
Other			$ 1	(15)		(1)			1			(14)				186
ENDING BALANCE at Dec. 31, 2019		37,005																	21,398		1,373	10,851	9,174
Ending Balance at Dec. 31, 2019		$ 41,360	$ 20	11,955		(169)			25,199	$ (11)	[4]	37,005		$ (11)	[4]	4,355			$ 21,398
Balance (in shares) at Dec. 31, 2019		1,956,000,000	1,956,000,000																1,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Temporary Equity, Net Income		$ (9)
Temporary Equity, Interest in Subsidiary Earnings		29
Temporary Equity, Other Changes		$ (1)
Common Stock, Dividends, Per Share, Cash Paid		$ 1.25
Temporary Equity, Carrying Amount, Including Portion Attributable to Noncontrolling Interests		$ 487
Net income (loss)		2,369							2,919			2,919							$ 2,650	[1]
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest																(546)
NET INCOME		2,919																					2,650
Issuances of common stock - net				(92)								(92)
Issuances of common stock, net of issuance cost (in shares)			0
Share-based payment activity				153								153
Share-based payment activity (in shares)			4,000,000
Dividends on common stock	[2]								(2,743)			(2,743)
Other comprehensive income (loss)		74				67						67				7
Impact of disposal of a business				0		10			0			10
Premium on equity units				(587)								(587)
Other differential membership interests activity				(36)								(36)				3,809
Sale of noncontrolling interests				(169)								(169)				689
Capital contributions from NEE																			1,900			1,900
Dividends to NEE		2,743																	2,210				(2,210)
Other				(2)					(1)			(3)				102						2	0
ENDING BALANCE at Dec. 31, 2020		36,513																	23,740		$ 1,373	$ 12,753	$ 9,614
Ending Balance at Dec. 31, 2020		$ 44,929	$ 20	$ 11,222		$ (92)			$ 25,363			$ 36,513				$ 8,416			$ 23,740
Balance (in shares) at Dec. 31, 2020		1,960,000,000	1,960,000,000																1,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Temporary Equity, Net Income		$ (4)
Temporary Equity, Interest in Subsidiary Earnings		$ (483)
Common Stock, Dividends, Per Share, Cash Paid		$ 1.40
Temporary Equity, Carrying Amount, Including Portion Attributable to Noncontrolling Interests		$ 0

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

[2] Dividends per share were $1.40, $1.25 and $1.11 for the years ended December 31, 2020, 2019 and 2018, respectively

[3] See Note 1 - Basis of Presentation.

[4] See Note 1 - Measurement of Credit Losses on Financial Instruments.