Pension Benefits and Postretirement Benefits Other Than Pensions (Tables)

6 Months Ended

Jun. 30, 2013

Pension Plans [Member]

Defined Benefit Plan Disclosure [Line Items]

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

The components of Pension Expense for the six and three months endedJune 30, 2013 and 2012 were:

	Six Months Ended						Three Months Ended
(Dollars in Millions)	June 30, 2013			June 30, 2012			June 30, 2013			June 30, 2012
Service Cost Earned	$	5.4		$	5.6		$	2.7		$	2.6
Interest Cost on Projected Benefit Obligation	11.2			11.2			5.7			5.6
Expected Return on Plan Assets	(14.9		)	(14.9		)	(7.5		)	(7.5		)
Amortization of Accumulated Unrecognized Actuarial Loss	13.1			9.4			7.2			4.9
Total Pension Expense Recognized	$	14.8		$	11.3		$	8.1		$	5.6

Postretirement Benefits Other than Pensions [Member]

Defined Benefit Plan Disclosure [Line Items]

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

The components of Postretirement Benefits Other than Pensions Expense for the six and three months endedJune 30, 2013 and 2012 were:

	Six Months Ended						Three Months Ended
(Dollars in Millions)	June 30, 2013			June 30, 2012			June 30, 2013			June 30, 2012
Service Cost on Benefits Earned	$	0.1		$	0.1		$	—		$	—
Interest Cost on Projected Benefit Obligation	0.6			0.8			0.3			0.4
Amortization of Accumulated Unrecognized Actuarial Gain	(0.6		)	(0.6		)	(0.3		)	(0.5		)
Total Postretirement Benefits Other than Pensions Expense	$	0.1		$	0.3		$	—		$	(0.1	)