v3.26.1
Summary of Significant Accounting and Reporting Policies - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Accounting Policies [Line Items]            
Restricted cash and cash equivalents, current $ 356.0     $ 356.0   $ 194.0
Restricted cash related to margin cash collateral that is netted against derivative assets (43.0)     (43.0)   (50.0)
restricted cash related to margin cash collateral that is netted against derivative liabilities 205.0     205.0   81.0
Supplier finance program, obligation 2,500.0     2,500.0   4,200.0
Tax credits sold       1,173.0 $ 310.0  
Operating lease income 113.0   $ 57.0 216.0 117.0  
Gain in connection with sale (7.0)   18.0 250.0 54.0  
Interest expense 487.0   1,060.0 1,774.0 2,834.0  
Investment in equity method investees 5,971.0     5,971.0   5,528.0
Florida Power & Light Company            
Accounting Policies [Line Items]            
Tax credits sold       169.0 0.0  
Florida Power & Light Company            
Accounting Policies [Line Items]            
Restricted cash and cash equivalents, current 42.0     42.0   46.0
Interest expense 349.0   326.0 687.0 644.0  
Florida Power & Light Company | 2025 Rate Agreement            
Accounting Policies [Line Items]            
RSM reserve, authorized amount 196.0     196.0    
Decrease in depreciation and amortization       (62.0)    
Decrease in income taxes, net       (46.0)    
Decrease in income taxes       (150.0)    
Florida Power & Light Company | 2025 Rate Agreement | Maximum            
Accounting Policies [Line Items]            
RSM reserve, authorized amount 1,500.0     1,500.0    
Florida Power & Light Company | 2021 Rate Agreement            
Accounting Policies [Line Items]            
Decrease in depreciation and amortization (147.0)   (19.0)   (641.0)  
Decrease in income taxes, net (110.0)          
NextEra Energy Resources            
Accounting Policies [Line Items]            
income associated with differential membership interests 536.0   417.0 1,047.0 811.0  
Investment in equity method investees     $ 1,700.0   $ 1,700.0  
NextEra Energy Resources | Rate-Regulated Transmission [Member] | Disposed of by Sale [Member]            
Accounting Policies [Line Items]            
Net gain in connection with sale       133.0    
Gain (after tax) in connection with sale       107.0    
Gain in connection with sale       253.0    
Interest expense       120.0    
Plant, Property, and Equipment, Decrease from Deconsolidation   $ 831.0        
Long-term Debt, Decrease from Deconsolidation   512.0        
Investment in equity method investees   287.0        
NextEra Energy Resources | Rate-Regulated Transmission [Member] | Balance Sheet Location [Axis]: us-gaap:CashAndCashEquivalentsAtCarryingValue | Disposed of by Sale [Member]            
Accounting Policies [Line Items]            
Purchase price   $ 287.0        
NextEra Energy Resources | Differential Membership Interests            
Accounting Policies [Line Items]            
Noncontrolling Interests associated with Differential Membership Interests $ (9,738.0)     $ (9,738.0)   $ (10,654.0)
Subsidiary of NEET | Rate-Regulated Transmission Asset Joint Venture | Rate-Regulated Transmission [Member] | Disposed of by Sale [Member]            
Accounting Policies [Line Items]            
Equity method investment, percentage sold   50.00%        
Subsidiary of NEET | Rate-Regulated Transmission Asset Joint Venture | Rate-Regulated Transmission [Member] | Disposed of by Sale [Member] | Rate-Regulated Transmission Asset Joint Venture            
Accounting Policies [Line Items]            
Equity method investment, ownership percentage   50.00%