Pension and Postretirement Benefits (Tables)

3 Months Ended

6 Months Ended

Jun. 30, 2012

Jun. 30, 2012

Pension and Postretirement Benefits [Abstract]

Net Periodic Benefit Cost / (Income)

	Pension						Postretirement
	Successor			Predecessor			Successor			Predecessor
$ in millions	2012			2011			2012			2011
Service cost	$	1.6		$	1.5		$	-		$	0.1
Interest cost		4.3			4.3			0.1			0.2
Expected return on assets (a)		(5.6	)		(6.1	)		-			-
Amortization of unrecognized:
Actuarial (gain) / loss		1.2			2.2			(0.2	)		(0.2	)
Prior service cost		0.3			0.6			-			-
Net periodic benefit cost / (income) before adjustments	$	1.8		$	2.5		$	(0.1	)	$	0.1

	Pension						Postretirement
	Successor			Predecessor			Successor			Predecessor
$ in millions	2012			2011			2012			2011
Service cost	$	3.1		$	2.9		$	0.1		$	0.1
Interest cost		8.6			8.6			0.4			0.5
Expected return on assets (a)		(11.3	)		(12.2	)		(0.1	)		(0.1	)
Amortization of unrecognized:
Actuarial (gain) / loss		2.4			4.5			(0.4	)		(0.4	)
Prior service cost		0.7			1.1			-			-
Net periodic benefit cost / (income) before adjustments	$	3.5		$	4.9		$	-		$	0.1

Estimated Future Benefit Payments and Medicare Part D Reimbursements

$ in millions	Pension		Postretirement
2012	$	11.5	$	1.2
2013		22.7		2.3
2014		23.2		2.2
2015		23.8		2.0
2016		24.0		1.9
2017 - 2021		124.4		7.5