v3.26.1
Summary of Significant Accounting and Reporting Policies - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Accounting Policies [Line Items]      
Restricted cash and cash equivalents, current $ 477.0   $ 194.0
Restricted cash related to margin cash collateral that is netted against derivative assets     (50.0)
restricted cash related to margin cash collateral that is netted against derivative liabilities 240.0   81.0
Supplier finance program, obligation 2,100.0   4,200.0
Operating lease income 103.0 $ 60.0  
Gain in connection with sale 257.0 36.0  
Interest expense 1,287.0 1,774.0  
Investment in equity method investees 5,989.0   5,528.0
Florida Power & Light Company      
Accounting Policies [Line Items]      
Tax credits sold 639.0 105.0  
Florida Power & Light Company      
Accounting Policies [Line Items]      
Restricted cash and cash equivalents, current 46.0   46.0
Interest expense 338.0 317.0  
Florida Power & Light Company | 2025 Rate Agreement      
Accounting Policies [Line Items]      
RSM reserve, authorized amount 306.0    
Decrease in income taxes (150.0)    
Decrease in depreciation and amortization (209.0)    
Decrease in income taxes, net (156.0)    
Florida Power & Light Company | 2025 Rate Agreement | Maximum      
Accounting Policies [Line Items]      
RSM reserve, authorized amount 1,500.0    
Florida Power & Light Company | 2021 Rate Agreement      
Accounting Policies [Line Items]      
Decrease in depreciation and amortization   (622.0)  
NextEra Energy Resources      
Accounting Policies [Line Items]      
income associated with differential membership interests 511.0 394.0  
Investment in equity method investees   $ 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] | Cash and Cash Equivalents | 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 $ (10,196.0)   $ (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%