Employee Retirement Benefits (Tables)

9 Months Ended

Sep. 30, 2018

Retirement Benefits [Abstract]

Net periodic benefit (income) cost

The components of net periodic benefit (income) cost 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,
	2018			2017			2018			2017			2018			2017			2018			2017
	(millions)
Service cost	$	18		$	16		$	—		$	—		$	52		$	49		$	1		$	1
Interest cost	20			21			2			2			62			63			5			6
Expected return on plan assets	(69		)	(67		)	—			—			(207		)	(202		)	—			—
Amortization of prior service benefit	—			—			(4		)	(4		)	(1		)	(1		)	(12		)	(6		)
Special termination benefits(a)	14			—			—			—			14			38			—			—
Postretirement benefits settlement	—			—			—			—			—			—			—			1
Net periodic benefit (income) cost at NEE	$	(17	)	$	(30	)	$	(2	)	$	(2	)	$	(80	)	$	(53	)	$	(6	)	$	2
Net periodic benefit (income) cost at FPL	$	(11	)	$	(20	)	$	(2	)	$	(2	)	$	(51	)	$	(32	)	$	(4	)	$	1

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(a) Reflects enhanced early retirement programs.