Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2013

Compensation and Retirement Disclosure [Abstract]

Changes in Projected Benefit Obligations, Fair Value of Plan Assets, and Funded Status of Plan

The following table summarizes the benefit obligations for the SERPs and Agents Non-Qualified Plan for the periods presented:

	Year Ended December 31,
	2013			2012
Change in benefit obligation:
Benefit obligation, January 1	$	97.2		$	98.7
Interest cost	3.8			4.4
Benefits paid	(7.8		)	(9.3		)
Actuarial (gains) losses on obligation	(9.1		)	3.4
Benefit obligation, December 31	$	84.1		$	97.2

Schedule of Amounts Recognized in Consolidated Balance Sheets

Amounts recognized on the Consolidated Balance Sheets consist of:

	December 31,
	2013			2012
Accrued benefit cost	$	(84.1	)	$	(97.2	)
Accumulated other comprehensive income (loss):
Prior service cost (credit)	(6.1		)	(7.3		)
Net amount recognized	$	(90.2	)	$	(104.5	)

Schedule of Weighted Average Assumptions Used

The weighted-average assumptions used in the measurement of the December 31, 2013 and 2012 benefit obligation for the SERPs and Agents Non-Qualified Plan, were as follows:

	2013		2012
Discount rate	4.95	%	4.05	%
Rate of compensation increase	4.00	%	4.00	%

The weighted-average assumptions used in calculating the net pension cost were as follows:

	2013		2012		2011
Discount rate	4.05	%	4.75	%	5.50	%
Rate of compensation increase	4.00	%	4.00	%	4.00	%

Schedule of Net Periodic Benefit Costs

Net periodic benefit costs for the SERPs and Agents Non-Qualified Plan were as follows for the periods presented:

	Year Ended December 31,
	2013			2012			2011
Interest cost	$	3.8		$	4.4		$	5.0
Net (gain) loss recognition	(9.1		)	3.4			16.0
Amortization of prior service cost (credit)	(1.2		)	(1.2		)	—
The effect of any curtailment or settlement	—			—			2.2
Net periodic (benefit) cost	$	(6.5	)	$	6.6		$	23.2