Consolidated Balance Sheet (Unaudited at June 30, 2013) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2012	Dec. 31, 2011
Assets
Fixed maturities, available for sale, at fair value (amortized cost $60,494 and $60,829)	$ 62,843	$ 65,393
Equity securities, available for sale, at fair value (cost $463 and $462)	701	645
Real estate investments	921	883
Short-term securities	3,394	3,483
Other investments	3,408	3,434
Total investments	71,267	73,838
Cash	308	330	230	214
Investment income accrued	734	752
Premiums receivable	6,268	5,872
Reinsurance recoverables	9,887	10,712
Ceded unearned premiums	913	856
Deferred acquisition costs	1,802	1,792
Deferred taxes	257
Contractholder receivables	4,448	4,806
Goodwill	3,365	3,365
Other intangible assets	358	381
Other assets	2,293	2,234
Total assets	101,900	104,938
Liabilities
Claims and claim adjustment expense reserves	49,620	50,922
Unearned premium reserves	11,557	11,241
Contractholder payables	4,448	4,806
Payables for reinsurance premiums	395	346
Deferred taxes		338
Debt	5,852	6,350
Other liabilities	5,138	5,530
Total liabilities	77,010	79,533
Shareholders' equity
Common stock (1,750.0 shares authorized; 373.5 and 377.4 shares issued and outstanding)	21,367	21,161	20,970	20,732
Retained earnings	22,806	21,352	20,541	19,579
Accumulated other comprehensive income	720	2,236	2,130	2,005
Treasury stock, at cost (380.3 and 372.3 shares)	(20,003)	(19,344)	(18,592)	(17,839)
Total shareholders' equity	24,890	25,405	25,049
Total liabilities and shareholders' equity	$ 101,900	$ 104,938