Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2020	Jan. 31, 2021	Jun. 30, 2020
Entity Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2020
Document Transition Report	false
Entity File Number	1-8841
Entity Registrant Name	NEXTERA ENERGY INC
Entity Tax Identification Number	59-2449419
Entity Address, Address Line One	700 Universe Boulevard
Entity Address, City or Town	Juno Beach
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	33408
City Area Code	561
Local Phone Number	694-4000
Entity Incorporation, State or Country Code	FL
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 117,405,158,883
Entity Common Stock, Shares Outstanding		1,959,874,682
Entity Central Index Key	0000753308
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Amendment Flag	false
ICFR Auditor Attestation Flag	true
Common Stock [Member]
Entity Information [Line Items]
Title of 12(b) Security	Common Stock, $0.01 Par Value
Trading Symbol	NEE
Security Exchange Name	NYSE
Corporate Units [Member]
Entity Information [Line Items]
Title of 12(b) Security	4.872% Corporate Units
Trading Symbol	NEE.PRO
Security Exchange Name	NYSE
Corporate Units 5.279% [Member]
Entity Information [Line Items]
Title of 12(b) Security	5.279% Corporate Units
Trading Symbol	NEE.PRP
Security Exchange Name	NYSE
Corporate Units 6.219% [Member]
Entity Information [Line Items]
Title of 12(b) Security	6.219% Corporate Units
Trading Symbol	NEE.PRQ
Security Exchange Name	NYSE
FPL[Member]
Entity Information [Line Items]
Entity File Number	2-27612
Entity Registrant Name	FLORIDA POWER & LIGHT CO
Entity Tax Identification Number	59-0247775
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		1,000
Entity Central Index Key	0000037634
Current Fiscal Year End Date	--12-31