Components of the net periodic benefit costs for the three and six months ended June 30, 2013 and 2012 were as follows:



Pension Plans	Southern Company			Alabama Power			Georgia Power			Gulf Power			Mississippi Power
	(in millions)
Three Months Ended June 30, 2013
Service cost	$	58		$	14		$	18		$	2		$	2
Interest cost	97			23			35			5			4
Expected return on plan assets	(150		)	(39		)	(53		)	(7		)	(6		)
Amortization:
Prior service costs	6			1			2			1			—
Net (gain)/loss	50			13			18			2			3
Net cost	$	61		$	12		$	20		$	3		$	3
Six Months Ended June 30, 2013
Service cost	$	116		$	27		$	35		$	5		$	5
Interest cost	194			46			69			9			9
Expected return on plan assets	(301		)	(78		)	(106		)	(13		)	(13		)
Amortization:
Prior service costs	13			3			5			1			—
Net (gain)/loss	100			26			37			4			5
Net cost	$	122		$	24		$	40		$	6		$	6
Three Months Ended June 30, 2012
Service cost	$	49		$	11		$	15		$	3		$	3
Interest cost	99			24			36			4			4
Expected return on plan assets	(146		)	(41		)	(55		)	(7		)	(6		)
Amortization:
Prior service costs	8			1			3			1			1
Net (gain)/loss	23			6			8			1			—
Net cost	$	33		$	1		$	7		$	2		$	2
Six Months Ended June 30, 2012
Service cost	$	99		$	22		$	30		$	5		$	5
Interest cost	197			47			71			8			9
Expected return on plan assets	(291		)	(81		)	(110		)	(13		)	(12		)
Amortization:
Prior service costs	15			3			6			1			1
Net (gain)/loss	47			12			16			2			1
Net cost	$	67		$	3		$	13		$	3		$	4



Postretirement Benefits	Southern Company			Alabama Power			Georgia Power			Gulf Power			Mississippi Power
	(in millions)
Three Months Ended June 30, 2013
Service cost	$	6		$	1		$	1		$	1		$	1
Interest cost	18			4			8			—			1
Expected return on plan assets	(14		)	(6		)	(6		)	—			(1		)
Amortization:
Transition obligation	1			—			1			—			—
Prior service costs	1			1			—			—			—
Net (gain)/loss	3			1			2			—			—
Net cost	$	15		$	1		$	6		$	1		$	1
Six Months Ended June 30, 2013
Service cost	$	12		$	3		$	3		$	1		$	1
Interest cost	37			9			16			1			2
Expected return on plan assets	(28		)	(12		)	(12		)	—			(1		)
Amortization:
Transition obligation	2			—			2			—			—
Prior service costs	2			2			—			—			—
Net (gain)/loss	6			1			4			—			—
Net cost	$	31		$	3		$	13		$	2		$	2
Three Months Ended June 30, 2012
Service cost	$	6		$	2		$	2		$	1		$	1
Interest cost	21			6			10			1			1
Expected return on plan assets	(15		)	(6		)	(7		)	(1		)	(1		)
Amortization:
Transition obligation	3			—			1			—			—
Prior service costs	1			1			—			—			—
Net (gain)/loss	1			—			1			—			—
Net cost	$	17		$	3		$	7		$	1		$	1
Six Months Ended June 30, 2012
Service cost	$	11		$	3		$	3		$	1		$	1
Interest cost	42			11			19			2			2
Expected return on plan assets	(30		)	(12		)	(14		)	(1		)	(1		)
Amortization:
Transition obligation	5			1			3			—			—
Prior service costs	2			2			—			—			—
Net (gain)/loss	3			—			2			—			—
Net cost	$	33		$	5		$	13		$	2		$	2