Employee Retirement Benefits (Tables)

9 Months Ended

Sep. 30, 2023

Retirement Benefits [Abstract]

Net periodic benefit (income) cost

The components of net periodic cost (income) for the plans are as follows:

	Pension Benefits				Postretirement Benefits				Pension Benefits				Postretirement Benefits
	Three Months Ended September 30,				Three Months Ended September 30,				Nine Months Ended September 30,				Nine Months Ended September 30,
	2023		2022		2023		2022		2023		2022		2023		2022
	(millions)
Service cost	$	16	$	21	$	—	$	—	$	48	$	64	$	1	$	1
Interest cost	33		19		3		2		99		58		7		4
Expected return on plan assets	(98)		(90)		—		—		(294)		(271)		—		—
Amortization of actuarial loss	—		—		—		1		—		—		—		2
Amortization of prior service benefit	—		—		—		(1)		—		(1)		—		(3)
Special termination benefits(a)	—		—		—		—		—		52		—		—
Net periodic cost (income) at NEE	$	(49)	$	(50)	$	3	$	2	$	(147)	$	(98)	$	8	$	4
Net periodic cost (income) allocated to FPL	$	(32)	$	(33)	$	2	$	1	$	(96)	$	(60)	$	6	$	3