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Document and Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2021
Jan. 31, 2022
Jun. 30, 2021
Entity Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2021    
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     $ 143,450,834,024
Entity Common Stock, Shares Outstanding   1,962,744,998  
Entity Central Index Key 0000753308    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2021    
Document Fiscal Period Focus FY    
Amendment Flag false    
ICFR Auditor Attestation Flag true    
Documents Incorporated by Reference
Portions of NextEra Energy, Inc.'s Proxy Statement for the 2022 Annual Meeting of Shareholders are incorporated by reference in Part III hereof.
__________________________________

This combined Form 10-K represents separate filings by NextEra Energy, Inc. and Florida Power & Light Company. Information contained herein relating to an individual registrant is filed by that registrant on its own behalf. Florida Power & Light Company makes no representations as to the information relating to NextEra Energy, Inc.'s other operations.

Florida Power & Light Company meets the conditions set forth in General Instruction I.(1)(a) and (b) of Form 10-K and is therefore filing this Form with the reduced disclosure format.
    
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