CONSOLIDATED BALANCE SHEETS (USD $) In Millions, unless otherwise specified	Dec. 31, 2012		Dec. 31, 2011
Investments
Fixed Maturity Securities - at fair value (amortized cost: $37,751.5; $36,640.7)	$ 44,973.0		$ 42,486.7
Mortgage Loans	1,712.7	[1]	1,612.3
Policy Loans	3,133.8		3,051.4
Other Long-term Investments	625.0		639.2
Short-term Investments	1,460.3		1,423.5
Total Investments	51,904.8		49,213.1
Other Assets
Cash and Bank Deposits	77.3		116.6
Accounts and Premiums Receivable	1,632.6		1,672.2
Reinsurance Recoverable	4,842.6		4,854.6
Accrued Investment Income	694.6		681.8
Deferred Acquisition Costs	1,755.5		1,677.1
Goodwill	201.7		201.2
Property and Equipment	501.6		493.3
Other Assets	625.4		645.3
Total Assets	62,236.1		59,555.2
Liabilities
Policy and Contract Benefits	1,484.6		1,494.0
Reserves for Future Policy and Contract Benefits	44,694.4		43,051.9
Unearned Premiums	426.7		433.2
Other Policyholders' Funds	1,644.9		1,625.9
Income Tax Payable	54.2		38.2
Deferred Income Tax	269.4		44.7
Short-term Debt	455.8		312.3
Long-term Debt	2,755.4		2,570.2
Other Liabilities	1,838.1		1,815.1
Total Liabilities	53,623.5		51,385.5
Commitments and Contingent Liabilities - Note 13
Stockholders' Equity
Common Stock, $0.10 par, Authorized: 725,000,000 shares Issued: 359,751,943 and 358,691,567 shares	36.0		35.9
Additional Paid-in Capital	2,607.7		2,591.1
Accumulated Other Comprehensive Income (Loss)
Net Unrealized Gain on Securities Not Other-Than-Temporarily Impaired	873.5		614.8
Net Gain on Cash Flow Hedges	401.6		408.7
Foreign Currency Translation Adjustment	(72.6)		(117.6)
Unrecognized Pension and Postretirement Benefit Costs	(574.5)		(444.1)
Retained Earnings	7,371.6		6,611.0
Treasury Stock - at cost: 89,546,758 shares and 65,975,613 shares	(2,030.7)		(1,530.1)
Total Stockholders' Equity	8,612.6		8,169.7
Total Liabilities and Stockholders' Equity	$ 62,236.1		$ 59,555.2

[1] Amortized cost for fixed maturity securities and mortgage loans represents original cost reduced by repayments, write-downs from other-than-temporary declines in fair value, amortization of premiums, and accretion of discounts.