Components of Net Periodic Pension and Postretirement Benefit Costs

6 Months Ended

Jun. 30, 2011

Components of Net Periodic Pension and Postretirement Benefit Costs

Components of Net Periodic Pension and Postretirement Benefit Costs

11.  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,
		2011		2010		2011		2010
Pension benefits
Service cost	$	38	$	37	$	76	$	75
Interest cost		80		80		161		160
Expected return on plan assets		(92)		(82)		(184)		(165)
Amortization of:
Prior service credit		(1)		--		(1)		(1)
Net actuarial loss		39		39		77		79
Settlement loss		8		13		17		26
Net periodic pension cost	$	72	$	87	$	146	$	174
Postretirement benefits
Service cost	$	3	$	3	$	6	$	6
Interest cost		9		10		18		20
Amortization of:
Prior service credit		(5)		(5)		(11)		(11)
Net actuarial gain		(8)		(6)		(15)		(11)
Net periodic postretirement benefit cost	$	(1)	$	2	$	(2)	$	4