Debt (Tables)

12 Months Ended

Dec. 31, 2015

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments

Total amortized cost of debt outstanding at December 31, 2015 and 2014 was:

DOLLARS IN MILLIONS	2015		2014
Senior Notes:
6.00% Senior Notes due November 30, 2015	$	—	$	249.5
6.00% Senior Notes due May 15, 2017	359.1		358.5
4.35% Senior Notes due February 15, 2025	247.4		—
7.375% Subordinated Debentures due February 27, 2054	144.1		144.1
Total Debt Outstanding	$	750.6	$	752.1

Schedule of Interest Expense

Interest Expense, including facility fees, accretion of discount and amortization of issuance costs, for the years ended December 31, 2015, 2014 and 2013 was:

DOLLARS IN MILLIONS	2015			2014			2013
Notes Payable under Revolving Credit Agreement	$	0.8		$	0.8		$	1.4
Federal Home Loan Bank of Dallas	—			—			—
Federal Home Loan Bank of Chicago	—			—			—
Senior Notes Payable:
6.00% Senior Notes due November 30, 2015	3.7			15.5			15.4
6.00% Senior Notes due May 15, 2017	22.2			22.2			22.2
4.35% Senior Notes due February 15, 2025	9.5			—			—
7.375% Subordinated Debentures due February 27, 2054	11.1			9.4			—
Mortgage Note Payable	—			—			0.2
Interest Expense before Capitalization of Interest	47.3			47.9			39.2
Capitalization of Interest	(0.8		)	(1.0		)	(0.9		)
Total Interest Expense	$	46.5		$	46.9		$	38.3

Schedule of Interest Paid

Interest Paid, including facility fees, for the years ended December 31, 2015, 2014 and 2013 was:

DOLLARS IN MILLIONS	2015		2014		2013
Notes Payable under Revolving Credit Agreement	$	1.4	$	0.6	$	0.8
Federal Home Loan Bank of Dallas	—		—		—
Federal Home Loan Bank of Chicago	—		—		—
Senior Notes Payable:
6.00% Senior Notes due November 30, 2015	4.8		15.0		15.0
6.00% Senior Notes due May 15, 2017	21.6		21.6		21.6
4.35% Senior Notes due February 15, 2025	5.2		—		—
7.375% Subordinated Debentures due February 27, 2054	11.1		8.5		—
Mortgage Note Payable	—		—		0.3
Total Interest Paid	$	44.1	$	45.7	$	37.7