v3.25.4
Employee Retirement Benefits - Net Periodic Income (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Pension Benefits [Member]      
Net periodic benefit (income) cost [Abstract]      
Service cost $ 69 $ 71 $ 64
Interest cost 136 131 132
Expected return on plan assets (414) (405) (392)
Amortization of prior service benefit (1) 0 0
Special termination benefits 0 27 0
Net periodic (income) cost (210) (176) (196)
Other Benefits [Member]      
Net periodic benefit (income) cost [Abstract]      
Service cost 1 1 1
Interest cost 8 9 9
Expected return on plan assets 0 0 0
Amortization of prior service benefit 0 0 0
Special termination benefits 0 0 0
Net periodic (income) cost 9 10 10
FPL | Pension Benefits [Member]      
Net periodic benefit (income) cost [Abstract]      
Net periodic (income) cost (119) (103) (127)
FPL | Other Benefits [Member]      
Net periodic benefit (income) cost [Abstract]      
Net periodic (income) cost $ 8 $ 8 $ 8