Components of Net Periodic Pension and Postretirement Benefit Costs

6 Months Ended

Jun. 30, 2013

Components of Net Periodic Pension and Postretirement Benefit Costs

Components of Net Periodic Pension and Postretirement Benefit Costs

12.  Components of Net Periodic Pension and Postretirement Benefit Costs

The components of net periodic cost for the Company’s pension and postretirement benefit plans are as follows:

($ in millions)		Three months ended June 30,						Six months ended June 30,
		2013			2012			2013			2012
Pension benefits
Service cost	$	39		$	38		$	79		$	76
Interest cost		66			75			132			149
Expected return on plan assets		(96	)		(99	)		(193	)		(197	)
Amortization of:
Prior service credit		(1	)		(1	)		(1	)		(1	)
Net actuarial loss		65			45			130			89
Settlement loss		9			9			19			19
Net periodic pension cost	$	82		$	67		$	166		$	135
Postretirement benefits
Service cost	$	3		$	3		$	7		$	6
Interest cost		9			9			17			18
Amortization of:
Prior service credit		(6	)		(5	)		(12	)		(11	)
Net actuarial gain		(3	)		(5	)		(6	)		(10	)
Net periodic postretirement cost	$	3		$	2		$	6		$	3