Debt (Tables)

3 Months Ended

Mar. 31, 2013

Schedule of Long-Term Debt

Debt consists of the following:

	March 31,			December 31,
(in millions)	2013			2012
Senior debentures maturing June 15, 2021	$	300.0		$	300.0
Senior debentures maturing March 1, 2020		200.0			200.0
Senior debentures maturing October 15, 2025		120.9			120.9
Subordinated debentures maturing March 30, 2053		175.0			—
Subordinated debentures maturing February 3, 2027		59.7			59.7
FHLBB borrowings (secured)		125.0			171.3
Total principal debt	$	980.6		$	851.9
Unamortized debt discount		(2.5	)		(2.5	)
Total	$	978.1		$	849.4