Debt (Tables)

12 Months Ended

Dec. 31, 2014

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments

Total amortized cost of debt outstanding at December 31, 2014 and 2013 was:

DOLLARS IN MILLIONS	2014		2013
Senior Notes:
6.00% Senior Notes due November 30, 2015	$	249.5	$	249.0
6.00% Senior Notes due May 15, 2017	358.5		357.9
7.375% Subordinated Debentures due February 27, 2054	144.1		—
Total Debt Outstanding	$	752.1	$	606.9

Schedule of Interest Expense

Interest Expense, including facility fees, accretion of discount and amortization of issuance costs, for the years ended December 31, 2014, 2013 and 2012 was:

DOLLARS IN MILLIONS	2014			2013			2012
Notes Payable under Revolving Credit Agreement	$	0.8		$	1.4		$	1.9
Senior Notes Payable:
6.00% Senior Notes due November 30, 2015	15.5			15.4			15.4
6.00% Senior Notes due May 15, 2017	22.2			22.2			22.1
7.375% Subordinated Debentures due February 27, 2054	9.4			—			—
Mortgage Note Payable	—			0.2			0.4
Interest Expense before Capitalization of Interest	47.9			39.2			39.8
Capitalization of Interest	(1.0		)	(0.9		)	(1.8		)
Total Interest Expense	$	46.9		$	38.3		$	38.0

Schedule of Interest Paid

Interest Paid, including facility fees, for the years ended December 31, 2014, 2013 and 2012 was:

DOLLARS IN MILLIONS	2014		2013		2012
Notes Payable under Revolving Credit Agreement	$	0.6	$	0.8	$	2.3
Senior Notes Payable:
6.00% Senior Notes due November 30, 2015	15.0		15.0		15.0
6.00% Senior Notes due May 15, 2017	21.6		21.6		21.6
7.375% Subordinated Debentures due February 27, 2054	8.5		—		—
Mortgage Note Payable	—		0.3		0.4
Total Interest Paid	$	45.7	$	37.7	$	39.3