XML 18 R1.htm IDEA: XBRL DOCUMENT v3.10.0.1
Document Entity Information - USD ($)
 9 Months Ended
Sep. 30, 2018
Jun. 30, 2017
Entity Information [Line Items]    
Entity Registrant Name NEXTERA ENERGY INC  
Entity Central Index Key 0000753308  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
Entity Public Float   $ 65,589,650,954
Entity Filer Category Large Accelerated Filer  
Entity Emerging Growth Company false  
Entity Small Business false  
Entity Common Stock, Shares Outstanding 477,945,257  
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus Q3  
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Sep. 30, 2018  
FPL [Member]    
Entity Information [Line Items]    
Entity Registrant Name FLORIDA POWER & LIGHT CO  
Entity Central Index Key 0000037634  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
Entity Filer Category Non-accelerated Filer  
Entity Emerging Growth Company false  
Entity Small Business false  
Entity Common Stock, Shares Outstanding 1,000