Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Available-for-sale securities, at fair value:
Fixed maturity securities (amortized cost: 2013 - $74,078; 2012 - $72,718)	$ 82,711	$ 82,036
Variable interest entities' fixed maturity securities (amortized cost: 2013 - $679; 2012 - $677)	708	708
Equity securities (cost: 2013 - $131; 2012 - $137)	148	157
Trading securities	2,528	2,554
Mortgage loans on real estate	7,057	7,029
Real estate	65	65
Policy loans	2,727	2,766
Derivative investments	2,268	2,652
Other investments	1,073	1,098
Total investments	99,285	99,065
Cash and invested cash	3,107	4,230
Deferred acquisition costs and value of business acquired	6,936	6,667
Premiums and fees receivable	440	380
Accrued investment income	1,078	1,015
Reinsurance recoverables	6,489	6,449
Funds withheld reinsurance assets	798	837
Goodwill	2,273	2,273
Other assets	2,569	2,580
Separate account assets	101,366	95,373
Total assets	224,341	218,869
Liabilities
Future contract benefits	19,149	19,780
Other contract holder funds	72,760	72,218
Short-term debt	706	200
Long-term debt	4,889	5,439
Reinsurance related embedded derivatives	199	215
Funds withheld reinsurance liabilities	926	940
Deferred gain on business sold through reinsurance	301	319
Payables for collateral on investments	4,107	4,181
Variable interest entities' liabilities	83	92
Other liabilities	4,993	5,139
Separate account liabilities	101,366	95,373
Total liabilities	209,479	203,896
Contingencies and Commitments (See Note 8)
Stockholders Equity
Preferred stock - 10,000,000 shares authorized; Series A - 9,532 shares issued and outstanding as of March 31, 2013, and December 31, 2012
Common stock - 800,000,000 shares authorized; 268,457,558 and 271,402,586 shares issued and outstanding as of March 31, 2013, and December 31, 2012, respectively	7,043	7,121
Retained earnings	4,238	4,044
Accumulated other comprehensive income (loss)	3,581	3,808
Total stockholders' equity	14,862	14,973
Total liabilities and stockholders' equity	$ 224,341	$ 218,869