Notes Payable (Tables)

9 Months Ended

Sep. 30, 2011

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments [Table Text Block]

Total debt outstanding at September 30, 2011 and December 31, 2010 was:

(Dollars in Millions)	Sep 30, 2011		Dec 31, 2010
Notes Payable under Revolving Credit Agreement	$	65.0	$	—
Senior Notes at Amortized Cost:
6.00% Senior Notes due May 15, 2017	356.7		356.3
6.00% Senior Notes due November 30, 2015	248.1		247.8
Mortgage Note Payable at Amortized Cost	5.6		5.7
Notes Payable at Amortized Cost	$	675.4	$	609.8

Schedule of Interest Expense [Table Text Block]

Interest Expense, including facility fees and accretion of discount, for the nine and three months endedSeptember 30, 2011 and 2010 was:

	Nine Months Ended						Three Months Ended
(Dollars in Millions)	Sep 30, 2011			Sep 30, 2010			Sep 30, 2011			Sep 30, 2010
Notes Payable under Revolving Credit Agreement	$	1.5		$	1.3		$	0.6		$	0.4
Senior Notes Payable:
6.00% Senior Notes due May 15, 2017	16.5			16.5			5.5			5.5
6.00% Senior Notes due November 30, 2015	11.5			—			3.8			—
4.875% Senior Notes due November 1, 2010	—			7.6			—			2.6
Mortgage Note Payable	0.3			0.3			0.1			0.1
Interest Expense before Capitalization of Interest	29.8			25.7			10.0			8.6
Capitalization of Interest	(1.8		)	(1.3		)	(0.7		)	(0.5		)
Total Interest Expense	$	28.0		$	24.4		$	9.3		$	8.1

Schedule of Interest Paid [Table Text Block]

Interest paid, including facility fees, for the nine and three months endedSeptember 30, 2011 and 2010 was:

	Nine Months Ended				Three Months Ended
(Dollars in Millions)	Sep 30, 2011		Sep 30, 2010		Sep 30, 2011		Sep 30, 2010
Notes Payable under Revolving Credit Agreement	$	0.5	$	0.5	$	0.3	$	0.2
Senior Notes Payable:
6.00% Senior Notes due May 15, 2017	10.8		10.8		—		—
6.00% Senior Notes due November 30, 2015	7.8		—		—		—
4.875% Senior Notes due November 1, 2010	—		4.9		—		—
Mortgage Note Payable	0.3		0.3		0.1		0.1
Total Interest Paid	$	19.4	$	16.5	$	0.4	$	0.3