Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
ASSETS
Fixed maturity securities-available-for-sale (amortized cost of $6,418.5 and $6,209.9)	$ 7,120.4	$ 6,769.5
Commercial mortgage loans, net	5,149.0	4,902.3
Real estate, net	101.5	92.7
Other invested assets	179.7	130.9
Total investments	12,550.6	11,895.4
Cash and cash equivalents	172.4	138.4
Premiums and other receivables	129.0	118.8
Accrued investment income	113.6	111.7
Amounts recoverable from reinsurers	962.2	949.3
Deferred acquisition costs, value of business acquired and other intangible assets, net	344.0	344.9
Goodwill	36.0	36.0
Property and equipment, net	95.1	101.3
Other assets	146.6	113.9
Separate account assets	5,071.8	4,593.5
Total assets	19,621.3	18,403.2
Liabilities:
Future policy benefits and claims	5,821.5	5,683.6
Other policyholder funds	5,324.5	5,078.1
Deferred tax liabilities, net	152.8	103.0
Short-term debt	1.1	251.2
Long-term debt	551.5	300.9
Other liabilities	527.0	402.5
Separate account liabilities	5,071.8	4,593.5
Total liabilities	17,450.2	16,412.8
Commitments and contingencies (See Note 10)
Shareholders' equity:
Preferred stock, 100,000,000 shares authorized; none issued	0	0
Common stock, no par, 300,000,000 shares authorized; 44,239,608 and 44,268,859 shares issued at September 30, 2012 and December 31, 2011, respectively	84.1	82.4
Accumulated other comprehensive income	314.0	235.1
Retained earnings	1,773.0	1,672.9
Total shareholders' equity	2,171.1	1,990.4
Total liabilities and shareholders' equity	$ 19,621.3	$ 18,403.2