CONSOLIDATED STATEMENTS OF INCOME (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Revenue
Premium Income	$ 1,905.8	$ 1,927.6	$ 3,836.7	$ 3,849.5
Net Investment Income	626.1	633.5	1,247.2	1,253.0
Realized Investment Gain (Loss)
Other-Than-Temporary Impairment Loss on Fixed Maturity Securities	0	0	(0.8)	0
Other Net Realized Investment Gain (Loss)	13.3	(2.1)	24.4	10.3
Net Realized Investment Gain (Loss)	13.3	(2.1)	23.6	10.3
Other Income	56.7	58.9	119.2	116.4
Total Revenue	2,601.9	2,617.9	5,226.7	5,229.2
Benefits and Expenses
Benefits and Change in Reserves for Future Benefits	1,661.8	1,683.2	3,310.3	3,346.1
Commissions	220.8	230.8	459.0	463.1
Interest and Debt Expense	37.3	35.2	74.4	70.7
Deferral of Acquisition Costs	(113.3)	(119.2)	(231.5)	(236.6)
Amortization of Deferred Acquisition Costs	101.3	99.2	225.1	198.6
Compensation Expense	194.9	195.4	392.5	402.3
Other Expenses	187.6	196.9	381.6	378.6
Total Benefits and Expenses	2,290.4	2,321.5	4,611.4	4,622.8
Income Before Income Tax	311.5	296.4	615.3	606.4
Income Tax (Benefit)
Current	112.2	3.6	194.0	40.9
Deferred	(19.3)	76.4	(9.9)	135.2
Total Income Tax	92.9	80.0	184.1	176.1
Net Income	$ 218.6	$ 216.4	$ 431.2	$ 430.3
Net Income Per Common Share
Basic	$ 0.82	$ 0.76	$ 1.61	$ 1.50
Diluted	$ 0.82	$ 0.76	$ 1.61	$ 1.50