Unaudited Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Operating:
Net income	$ 176.0	$ 158.7
Adjustments to reconcile net income to net cash provided by operating activities:
Net realized capital losses	15.3	5.3
Depreciation and amortization	115.1	109.6
Deferral of acquisition costs, value of business acquired and other intangible assets, net	(66.5)	(58.9)
Deferred income taxes	(2.4)	(0.6)
Changes in other assets and liabilities:
Receivables and accrued income	(26.7)	(14.4)
Future policy benefits and claims	(4.5)	(30.1)
Other, net	105.4	48.4
Net cash provided by operating activities	311.7	218.0
Investing:
Proceeds from sale, maturity, or repayment of fixed maturity securities-available-for-sale	814.2	554.6
Proceeds from sale or repayment of commercial mortgage loans	999.4	982.2
Proceeds from sale of real estate	5.3	16.6
Proceeds from sale of other invested assets	11.8	14.9
Acquisition of fixed maturity securities-available-for-sale	(1,138.5)	(1,037.4)
Acquisition or origination of commercial mortgage loans	(1,224.8)	(930.3)
Acquisition of real estate	(1.2)	(0.8)
Acquisition of other invested assets	(61.6)	(87.4)
Acquisition of property and equipment, net	(17.2)	(12.7)
Net cash used in investing activities	(612.6)	(500.3)
Financing:
Policyholder fund deposits	1,938.2	2,233.3
Policyholder fund withdrawals	(1,570.5)	(1,912.7)
Repayment of debt	0.0	(47.1)
Issuance of common stock	11.4	12.2
Repurchases of common stock	0.0	(119.1)
Other financing activity, net	1.0	(0.3)
Net cash provided by financing activities	380.1	166.3
Increase (Decrease) in cash and cash equivalents	79.2	(116.0)
Cash and cash equivalents, beginning of period	251.1	379.3
Cash and cash equivalents, end of period	330.3	263.3
Cash paid (received) during the period for:
Interest	137.6	150.8
Income taxes	31.6	32.5
Non-cash transactions:
Real estate acquired through commercial mortgage loan foreclosure	0.4	4.4
Commercial mortgage loans originated on real estate sold	$ 0.0	$ 0.6