Components of Net Periodic Pension and Postretirement Benefit Costs

9 Months Ended

Sep. 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 September 30,						Nine months ended September 30,
		2011			2010			2011			2010
Pension benefits
Service cost	$	37		$	38		$	113		$	113
Interest cost		81			80			242			240
Expected return on plan assets		(92	)		(83	)		(276	)		(248	)
Amortization of:
Prior service credit		--			(1	)		(1	)		(2	)
Net actuarial loss		39			40			116			119
Settlement loss		9			13			26			39
Net periodic pension cost	$	74		$	87		$	220		$	261
Postretirement benefits
Service cost	$	2		$	3		$	8		$	9
Interest cost		9			10			27			30
Amortization of:
Prior service credit		(6	)		(6	)		(17	)		(17	)
Net actuarial gain		(7	)		(5	)		(22	)		(16	)
Settlement loss		1			--			1			--
Net periodic postretirement benefit cost	$	(1	)	$	2		$	(3	)	$	6