Consolidated Balance Sheets (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Investments
Fixed maturities, at fair value	$ 17,049	$ 16,217
Equity securities, at fair value	107	100
Commercial mortgage loans	3,259	3,301
Policy loans	1,488	1,502
Real estate	79	87
Other long-term investments	1,095	1,058
Short-term investments	187	225
Total investments	23,264	22,490
Cash and cash equivalents	2,111	4,690
Accrued investment income	291	252
Premiums, accounts and notes receivable, net	1,897	1,358
Reinsurance recoverables	6,187	6,256
Deferred policy acquisition costs	884	817
Property and equipment	1,083	1,024
Deferred income taxes, net	533	803
Goodwill	5,726	3,164
Other assets, including other intangibles	2,328	1,750
Separate account assets	8,481	8,093
Total assets	52,785	50,697
Liabilities
Contractholder deposit funds	8,566	8,553
Future policy benefits	8,404	8,593
Unpaid claims and claim expenses	4,176	4,146
Health Care medical claims payable	1,698	1,095
Unearned premiums and fees	1,050	502
Total insurance and contractholder liabilities	23,894	22,889
Accounts payable, accrued expenses and other liabilities	6,632	6,627
Short-term debt	227	104
Long-term debt	4,990	4,990
Separate account liabilities	8,481	8,093
Total liabilities	44,224	42,703
Shareholders' Equity
Common stock (par value per share, $0.25; shares issued, 366; authorized, 600)	92	92
Additional paid-in capital	3,268	3,188
Net unrealized appreciation, fixed maturities	762	739
Net unrealized appreciation, equity securities	2	1
Net unrealized depreciation, derivatives	(28)	(23)
Net translation of foreign currencies	38	3
Postretirement benefits liability adjustment	(1,496)	(1,507)
Accumulated other comprehensive loss	(722)	(787)
Retained earnings	11,123	10,787
Less treasury stock, at cost	(5,200)	(5,286)
Total shareholders' equity	8,561	7,994
Total equity	8,561	7,994
Total liabilities and equity	$ 52,785	$ 50,697
Shareholders' Equity Per Share	$ 29.69	$ 28.00