Retirement Benefits (Unaudited)

3 Months Ended

Mar. 31, 2012

Compensation and Retirement Disclosure [Abstract]

The cost of the company’s pension plans and post-retirement medical and life benefit plans is shown in the following table:



	Three Months Ended March 31
	Pension Benefits						Medical and Life Benefits
$ in millions	2012			2011			2012			2011
Components of net periodic benefit cost
Service cost		$131			$130			$ 8			$ 8
Interest cost	296			305			27			29
Expected return on plan assets	(427		)	(423		)	(17		)	(16		)
Amortization of:
Prior service cost (credit)	(15		)	6			(12		)	(13		)
Net loss from previous years	107			41			5			3
Other	2			—			—			—
Net periodic benefit cost		$ 94			$ 59			$11			$11

Employer Contributions

The company’s required minimum funding in 2012 for its defined benefit pension plans and its medical and life benefit plans are approximately $65 million and $120 million, respectively. For the three months ended March 31, 2012, contributions of $17 million have been made to the company’s defined benefit pension plans, and contributions of $14 million have been made to the company’s medical and life benefit plans. The company also sponsors defined contribution plans, and for the three months ended March 31, 2012, and 2011, contributions of $76 million and $85 million, respectively, were made to these plans.

- Definition

The entire disclosure for pension and other postretirement benefits.

+ References

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