CONSOLIDATED STATEMENT OF CASH FLOWS (unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash flows from operating activities:
Insurance policy income	$ 617.3	$ 592.9
Net investment income	285.8	281.0
Fee revenue and other income	14.2	16.2
Insurance policy benefits	(487.4)	(474.9)
Interest expense	(13.3)	(17.2)
Deferrable policy acquisition costs	(62.2)	(58.2)
Other operating costs	(212.9)	(216.6)
Income taxes	(1.1)	(0.7)
Net cash from operating activities	140.4	122.5
Cash flows from investing activities:
Sales of investments	1,181.5	452.5
Maturities and redemptions of investments	349.6	320.1
Purchases of investments	(1,524.9)	(1,019.9)
Net purchases of trading securities	(21.7)	(3.7)
Change in cash and cash equivalents held by variable interest entities	174.3	(90.2)
Other	(3.8)	(5.2)
Net cash provided (used) by investing activities	155.0	(346.4)
Cash flows from financing activities:
Payments on notes payable	0.0	(19.8)
Issuance of common stock	0.4	1.0
Payments to repurchase common stock	(93.7)	(81.5)
Common stock dividends paid	(12.7)	(12.1)
Amounts received for deposit products	340.1	286.1
Withdrawals from deposit products	(305.3)	(322.6)
Issuance of investment borrowings:
Related to variable interest entities	2.9	239.3
Payments on investment borrowings:
Federal Home Loan Bank	(0.2)	(0.2)
Related to variable interest entities and other	(23.5)	(50.9)
Investment borrowings - repurchase agreements, net	0.0	(0.1)
Net cash provided (used) by financing activities	(92.0)	39.2
Net increase (decrease) in cash and cash equivalents	203.4	(184.7)
Cash and cash equivalents, beginning of period	432.3	611.6
Cash and cash equivalents, end of period	$ 635.7	$ 426.9