Pension and Postretirement Benefits (Tables)

6 Months Ended

Jun. 30, 2011

Pension and Postretirement Benefits

Net Periodic Benefit Cost / (Income)

Net Periodic Benefit Cost / (Income)		Pension						Postretirement
$ in millions		2011			2010			2011			2010
Service cost	$	1.5		$	1.1		$	0.1		$	-
Interest cost		4.3			4.5			0.2			0.3
Expected return on assets (a)		(6.1	)		(5.6	)		-			(0.1	)
Amortization of unrecognized:
Actuarial (gain) / loss		2.2			1.8			(0.2	)		(0.1	)
Prior service cost		0.6			0.9			-			-
Net periodic benefit cost / (income) before adjustments	$	2.5		$	2.7		$	0.1		$	0.1

(a) For purposes of calculating the expected return on pension plan assets, under GAAP, the market-related value of assets (MRVA) is used. GAAP requires that the difference between actual plan asset returns and estimated plan asset returns be included in the MRVA equally over a period not to exceed five years. We use a methodology under which we include the difference between actual and estimated asset returns in the MRVA equally over a three year period. The MRVA used in the calculation of expected return on pension plan assets for the 2011 net periodic benefit cost was approximately $316 million.

Net Periodic Benefit Cost / (Income)		Pension						Postretirement
$ in millions		2011			2010			2011			2010
Service cost	$	2.9		$	2.2		$	0.1		$	-
Interest cost		8.6			9.0			0.5			0.7
Expected return on assets (a)		(12.2	)		(11.2	)		(0.1	)		(0.2	)
Amortization of unrecognized:
Actuarial (gain) / loss		4.5			3.6			(0.4	)		(0.4	)
Prior service cost		1.1			1.9			-			0.1
Net periodic benefit cost / (income) before adjustments	$	4.9		$	5.5		$	0.1		$	0.2

(a) For purposes of calculating the expected return on pension plan assets, under GAAP, the market-related value of assets (MRVA) is used. GAAP requires that the difference between actual plan asset returns and estimated plan asset returns be included in the MRVA equally over a period not to exceed five years. We use a methodology under which we include the difference between actual and estimated asset returns in the MRVA equally over a three year period. The MRVA used in the calculation of expected return on pension plan assets for the 2011 net periodic benefit cost was approximately $316 million.

Schedule of Estimated Future Benefit Payments

Estimated Future Benefit Payments and Medicare Part D Reimbursements
$ in millions		Pension	Postretirement
2011	$	10.7	$	1.3
2012	$	23.1	$	2.4
2013	$	23.1	$	2.4
2014	$	23.6	$	2.3
2015	$	24.0	$	2.1
2016 - 2020	$	122.9	$	8.8