Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2011

Commitments and Contingencies [Abstract]

Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]

At December 31, 2011, future minimum lease payments required under operating leases having initial or remaining non-cancellable lease terms in excess of one year, exclusive of exited leases which are recorded as a restructuring liability, are as follows:

(dollars in millions)
2012	$	17.4
2013	13.9
2014	10.5
2015	7.0
2016	2.3
Thereafter	1.9
Total	$	53.0

Schedule of Change in Asset Retirement Obligation [Table Text Block]

The following table presents the activity for the Company’s asset retirement obligations, which are included in "Other noncurrent liabilities" in the Consolidated Balance Sheets:

	December 31,
(dollars in millions)	2011			2010
Balance, beginning of period	$	5.1		$	5.0
Liabilities settled	—			(0.2		)
Liabilities incurred	0.2			—
Revisions to estimated cash flow	(0.2		)	—
Accretion expense	0.3			0.3
Balance, end of period	$	5.4		$	5.1