Derivative Instruments (Credit Risk Disclosures) (Details) - USD ($)	Dec. 31, 2024	Dec. 31, 2023
Derivative [Line Items]
Fair value of derivative instruments with credit-risk-related contingent features that were in a liability position	$ 3,800,000,000	$ 4,700,000,000
Total required posted collateral should FPL's and Capital Holdings' credit ratings fall to BBB/Baa2	500,000,000	510,000,000
Total required posted collateral should FPL's and Capital Holdings' credit ratings fall below investment grade	2,400,000,000	2,400,000,000
Additional collateral requirements if non-ratings based contract provisions are triggered	1,400,000,000	1,700,000,000
Collateral Already Posted, Aggregate Fair Value	19,000,000	691,000,000
Letters Of Credit Already Posted Aggregate Fair Value	1,334,000,000	1,595,000,000
FPL [Member]
Derivative [Line Items]
Fair value of derivative instruments with credit-risk-related contingent features that were in a liability position	11,000,000	14,000,000
Total required posted collateral should FPL's and Capital Holdings' credit ratings fall to BBB/Baa2	0	0
Total required posted collateral should FPL's and Capital Holdings' credit ratings fall below investment grade	25,000,000	15,000,000
Additional collateral requirements if non-ratings based contract provisions are triggered	70,000,000	50,000,000
Collateral Already Posted, Aggregate Fair Value	0	0
Letters Of Credit Already Posted Aggregate Fair Value	$ 0	$ 0