Pension and Postretirement Plans (Tables)

6 Months Ended

Jun. 30, 2013

General Discussion of Pension and Other Postretirement Benefits [Abstract]

Schedule of Net Benefit Costs [Table Text Block]

or the three and six months ended June 30, 2013 and 2012, pension and postretirement benefit costs were as follows:

	Three Months Ended June 30,
	2013			2012			2013			2012
(dollars in millions)	Pension Benefits						Postretirement and Other Benefits
Service cost	$	0.8		$	0.7		$	0.1		$	0.1
Interest cost on projected benefit obligation	4.2			4.6			0.7			1.2
Expected return on plan assets	(6.8		)	(6.1		)	—			—
Curtailment gain	(0.6		)	—			—			—
Amortization of:
Prior service cost (benefit)	0.1			0.1			(3.3		)	(3.3		)
Actuarial loss	5.0			5.8			1.3			1.8
Total amortization	5.1			5.9			(2.0		)	(1.5		)
Benefit costs	$	2.7		$	5.1		$	(1.2	)	$	(0.2	)

	Six Months Ended June 30,
	2013			2012			2013			2012
(dollars in millions)	Pension Benefits						Postretirement and Other Benefits
Service cost	$	1.4		$	1.3		$	0.2		$	0.2
Interest cost on projected benefit obligation	9.4			10.7			2.0			2.8
Expected return on plan assets	(12.9		)	(13.0		)	—			—
Curtailment gain	(0.6		)	—			—			—
Amortization of:
Prior service cost (benefit)	0.1			0.1			(6.5		)	(6.6		)
Actuarial loss	11.0			9.7			2.9			3.4
Total amortization	11.1			9.8			(3.6		)	(3.2		)
Benefit costs	$	8.4		$	8.8		$	(1.4	)	$	(0.2	)