Employee Benefits (Tables)

3 Months Ended

Mar. 31, 2013

Benefit or (Income) Cost Related to Pension and Postretirement Health Care and Life Insurance

The following table summarizes the benefit (income) cost related to our pension and postretirement health care and life insurance plans:

(dollars in millions)                  Pension Health Care and Life  

Three Months Ended March 31,	2013			2012			2013			2012
Service cost	$	99		$	89		$	80		$	92
Amortization of prior service cost (credit)		1			(1	)		(62	)		(9	)
Subtotal		100			88			18			83
Expected return on plan assets		(311	)		(442	)		(36	)		(43	)
Interest cost		250			362			274			327
Net periodic benefit cost	$	39		$	8		$	256		$	367