CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenue
Premium Income	$ 2,221.0	$ 2,142.2	$ 4,471.0	$ 4,285.1
Net Investment Income	623.6	620.5	1,225.9	1,222.9
Realized Investment Gain (Loss)
Other-Than-Temporary Impairment Loss on Fixed Maturity Securities	0.0	0.0	1.0	0.0
Net Realized Investment Gain (Loss), Excluding Other-Than-Temporary Impairment Loss on Fixed Maturity Securities	(2.6)	8.1	(3.8)	19.1
Net Realized Investment Gain (Loss)	(2.6)	8.1	(4.8)	19.1
Other Income	48.3	51.2	97.8	101.4
Total Revenue	2,890.3	2,822.0	5,789.9	5,628.5
Benefits and Expenses
Benefits and Change in Reserves for Future Benefits	1,804.1	1,752.0	3,612.0	3,501.0
Commissions	273.5	261.3	555.8	531.5
Interest and Debt Expense	42.4	39.9	82.6	79.7
Deferral of Acquisition Costs	(165.7)	(153.2)	(335.0)	(315.3)
Amortization of Deferred Acquisition Costs	140.2	138.3	291.7	279.8
Compensation Expense	220.2	217.8	441.9	426.8
Other Expenses	220.8	204.3	445.0	433.1
Total Benefits and Expenses	2,535.5	2,460.4	5,094.0	4,936.6
Income Before Income Tax	354.8	361.6	695.9	691.9
Income Tax (Benefit)
Current	80.6	105.8	170.0	162.4
Deferred	(11.3)	10.7	(33.1)	54.5
Total Income Tax	69.3	116.5	136.9	216.9
Net Income	$ 285.5	$ 245.1	$ 559.0	$ 475.0
Net Income Per Common Share
Basic	$ 1.29	$ 1.08	$ 2.53	$ 2.08
Assuming Dilution	$ 1.29	$ 1.07	$ 2.52	$ 2.07