CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenue
Premium Income	$ 2,153.6	$ 2,089.4	$ 6,438.7	$ 6,258.5
Net Investment Income	609.0	611.4	1,831.9	1,841.1
Realized Investment Gain (Loss)
Other-Than-Temporary Impairment Loss on Fixed Maturity Securities	0.0	0.0	0.0	(30.5)
Net Realized Investment Gain, Excluding Other-Than-Temporary Impairment Loss on Fixed Maturity Securities	9.8	11.0	28.9	26.3
Net Realized Investment Gain (Loss)	9.8	11.0	28.9	(4.2)
Other Income	46.7	51.5	148.1	154.6
Total Revenue	2,819.1	2,763.3	8,447.6	8,250.0
Benefits and Expenses
Benefits and Change in Reserves for Future Benefits	1,765.6	1,742.6	5,266.6	5,205.9
Commissions	262.4	256.8	793.9	771.7
Interest and Debt Expense	40.1	45.2	119.8	126.2
Deferral of Acquisition Costs	(154.8)	(147.8)	(470.1)	(447.0)
Amortization of Deferred Acquisition Costs	123.7	118.8	403.5	377.2
Compensation Expense	221.8	210.1	644.7	620.6
Other Expenses	193.5	205.5	630.5	618.9
Total Benefits and Expenses	2,452.3	2,431.2	7,388.9	7,273.5
Income Before Income Tax	366.8	332.1	1,058.7	976.5
Income Tax (Benefit)
Current	139.4	84.0	301.8	242.7
Deferred	(24.9)	12.1	29.6	50.4
Total Income Tax	114.5	96.1	331.4	293.1
Net Income	$ 252.3	$ 236.0	$ 727.3	$ 683.4
Net Income Per Common Share
Basic	$ 1.12	$ 1.01	$ 3.20	$ 2.89
Assuming Dilution	$ 1.12	$ 1.01	$ 3.19	$ 2.88