v3.26.3
Derivative Instruments (Balance Sheet Disclosure) (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Derivatives, Fair Value [Line Items]    
Derivative assets $ 6,204 $ 2,995
Derivative Asset, Current 2,325 997
Derivative Asset, Noncurrent $ 3,879 $ 1,998
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration] Other assets, current Other assets, current
Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration]   Other
Derivative liability $ 2,798 $ 3,261
Derivative Liability, Current 1,067 1,113
Derivative Liability, Noncurrent $ 1,731 $ 2,148
Derivative Liability, Current, Statement of Financial Position [Extensible Enumeration] Other Liabilities, Current Other Liabilities, Current
Derivative Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Other Liabilities, Noncurrent Other Liabilities, Noncurrent
Balance Sheet Location [Axis]: us-gaap:DerivativeAssetsCurrent    
Derivatives, Fair Value [Line Items]    
Derivative Asset, Fair Value, Amount Offset Against Collateral $ 58 $ 68
Balance Sheet Location [Axis]: us-gaap:DerivativeAssetsNoncurrent    
Derivatives, Fair Value [Line Items]    
Derivative Asset, Fair Value, Amount Offset Against Collateral 93 99
Balance Sheet Location [Axis]: us-gaap:DerivativeLiabilitiesCurrent    
Derivatives, Fair Value [Line Items]    
Derivative Liability, Collateral, Right to Reclaim Cash, Offset 100 81
Commodity contracts | Fair value measurements made on a recurring basis [Member]    
Derivatives, Fair Value [Line Items]    
Derivative assets 3,055 2,715
Derivative liability 2,716 2,648
Derivative asset, netting (6,543) (4,007)
Derivative liability, netting 6,492 3,921
Commodity contracts | Level 1 | Fair value measurements made on a recurring basis [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Asset, Gross Asset 4,788 1,914
Derivative Liability, Gross Liability 4,943 2,082
Commodity contracts | Level 2 | Fair value measurements made on a recurring basis [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Asset, Gross Asset 2,992 2,958
Derivative Liability, Gross Liability 3,125 3,319
Commodity contracts | Level 3 | Fair value measurements made on a recurring basis [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Asset, Gross Asset 1,818 1,850
Derivative Liability, Gross Liability 1,140 1,168
Interest rate contracts | Fair value measurements made on a recurring basis [Member]    
Derivatives, Fair Value [Line Items]    
Derivative assets 3,287 234
Derivative liability 3 486
Derivative asset, netting (104) (77)
Derivative liability, netting 104 77
Interest rate contracts | Level 1 | Fair value measurements made on a recurring basis [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Asset, Gross Asset 0 0
Derivative Liability, Gross Liability 0 0
Interest rate contracts | Level 2 | Fair value measurements made on a recurring basis [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Asset, Gross Asset 3,391 311
Derivative Liability, Gross Liability 107 563
Interest rate contracts | Level 3 | Fair value measurements made on a recurring basis [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Asset, Gross Asset 0 0
Derivative Liability, Gross Liability 0 0
Foreign currency contracts | Fair value measurements made on a recurring basis [Member]    
Derivatives, Fair Value [Line Items]    
Derivative assets (138) 46
Derivative liability 79 127
Derivative asset, netting (194) 12
Derivative liability, netting 194 12
Foreign currency contracts | Level 1 | Fair value measurements made on a recurring basis [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Asset, Gross Asset 0 0
Derivative Liability, Gross Liability 0 0
Foreign currency contracts | Level 2 | Fair value measurements made on a recurring basis [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Asset, Gross Asset 56 34
Derivative Liability, Gross Liability 273 115
Foreign currency contracts | Level 3 | Fair value measurements made on a recurring basis [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Asset, Gross Asset 0 0
Derivative Liability, Gross Liability 0 0
Florida Power & Light Company    
Derivatives, Fair Value [Line Items]    
Derivative assets   40
Derivative Asset, Current 9 39
Derivative Asset, Noncurrent   1
Derivative liability 48 16
Derivative Liability, Current 15 15
Derivative Liability, Noncurrent 33 1
Florida Power & Light Company | Commodity contracts | Fair value measurements made on a recurring basis [Member]    
Derivatives, Fair Value [Line Items]    
Derivative assets 9 40
Derivative liability 48 16
Derivative asset, netting (3) (13)
Derivative liability, netting 3 13
Florida Power & Light Company | Commodity contracts | Level 1 | Fair value measurements made on a recurring basis [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Asset, Gross Asset 0 0
Derivative Liability, Gross Liability 0 0
Florida Power & Light Company | Commodity contracts | Level 2 | Fair value measurements made on a recurring basis [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Asset, Gross Asset 4 5
Derivative Liability, Gross Liability 40 13
Florida Power & Light Company | Commodity contracts | Level 3 | Fair value measurements made on a recurring basis [Member]    
Derivatives, Fair Value [Line Items]    
Derivative Asset, Gross Asset 8 48
Derivative Liability, Gross Liability $ 11 $ 16