Pension and Postretirement Plans (Tables)

6 Months Ended

Jun. 30, 2014

General Discussion of Pension and Other Postretirement Benefits [Abstract]

Schedule of Net Benefit Costs [Table Text Block]

For the three and six months ended June 30, 2014 and 2013, pension and postretirement benefit costs were as follows:

	Three Months Ended June 30,
	2014			2013			2014			2013
(dollars in millions)	Pension Benefits						Postretirement and Other Benefits
Service cost	$	0.2		$	0.8		$	—		$	0.1
Interest cost on projected benefit obligation	6.0			4.2			1.1			0.7
Expected return on plan assets	(7.3		)	(6.8		)	—			—
Curtailment gain	—			(0.6		)	—			—
Amortization of:
Prior service cost (benefit)	0.1			0.1			(3.9		)	(3.3		)
Actuarial loss	3.4			5.0			1.4			1.3
Total amortization	3.5			5.1			(2.5		)	(2.0		)
Benefit costs	$	2.4		$	2.7		$	(1.4	)	$	(1.2	)

	Six Months Ended June 30,
	2014			2013			2014			2013
(dollars in millions)	Pension Benefits						Postretirement and Other Benefits
Service cost	$	0.5		$	1.4		$	0.1		$	0.2
Interest cost on projected benefit obligation	10.5			9.4			2.0			2.0
Expected return on plan assets	(14.1		)	(12.9		)	—			—
Curtailment gain	—			(0.6		)	—			—
Amortization of:
Prior service cost (benefit)	0.1			0.1			(7.7		)	(6.5		)
Actuarial loss	8.7			11.0			2.7			2.9
Total amortization	8.8			11.1			(5.0		)	(3.6		)
Benefit costs	$	5.7		$	8.4		$	(2.9	)	$	(1.4	)