Pension Benefits and Postretirement Benefits Other Than Pensions (Tables)

9 Months Ended

Sep. 30, 2011

Pension Plans [Member]

Defined Benefit Plan Disclosure [Line Items]

Schedule of Defined Benefit Plans Disclosures [Text Block]

The components of Pension Expense for the nine and three months endedSeptember 30, 2011 and 2010 were:

	Nine Months Ended						Three Months Ended
(Dollars in Millions)	Sep 30, 2011			Sep 30, 2010			Sep 30, 2011			Sep 30, 2010
Service Cost on Benefits Earned	$	7.7		$	6.8		$	2.6		$	2.3
Interest Cost on Projected Benefit Obligation	17.2			16.8			5.7			5.6
Expected Return on Plan Assets	(18.3		)	(17.8		)	(6.1		)	(6.0		)
Net Amortization and Deferral	7.0			1.7			2.3			0.6
Total Pension Expense	$	13.6		$	7.5		$	4.5		$	2.5

Postretirement Benefits Other than Pensions [Member]

Defined Benefit Plan Disclosure [Line Items]

Schedule of Defined Benefit Plans Disclosures [Text Block]

The components of Postretirement Benefits Other than Pensions Expense for the nine and three months endedSeptember 30, 2011 and 2010 were:

	Nine Months Ended						Three Months Ended
(Dollars in Millions)	Sep 30, 2011			Sep 30, 2010			Sep 30, 2011			Sep 30, 2010
Service Cost on Benefits Earned	$	0.1		$	0.1		$	—		$	—
Interest Cost on Projected Benefit Obligation	1.4			1.5			0.5			0.5
Net Amortization and Deferral	(0.5		)	(0.8		)	(0.2		)	(0.3		)
Total Postretirement Benefits Other than Pensions Expense	$	1.0		$	0.8		$	0.3		$	0.2