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Employee Retirement Benefits (Tables)
9 Months Ended
Sep. 30, 2024
Retirement Benefits [Abstract]  
Net periodic benefit (income) cost
The components of net periodic cost (income) for the plans are as follows:
 Pension BenefitsPostretirement BenefitsPension BenefitsPostretirement Benefits
 Three Months Ended September 30,Three Months Ended September 30,Nine Months Ended September 30,Nine Months Ended September 30,
 20242023202420232024202320242023
 (millions)
Service cost$17 $16 $ $— $53 $48 $1 $
Interest cost33 33 2 99 99 6 
Expected return on plan assets(100)(98) — (304)(294) — 
Special termination benefit(a)
(1)—  — 27 —  — 
Net periodic cost (income) at NEE$(51)$(49)$2 $$(125)$(147)$7 $
Net periodic cost (income) allocated to FPL$(32)$(32)$2 $$(72)$(96)$6 $
———————————————
(a)Reflects enhanced early retirement benefit.