Condensed Financial Information (Parent Company) (Condensed Balance Sheet) (Details) (USD $) In Millions, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Investments:
Available-for-sale Securities, Debt Securities	$ 350,187	$ 374,266
Available-for-sale Securities, Equity Securities	3,402	2,891
Short-term Investments	13,955	16,906
Other Investments	16,229	21,145
Total investments	488,779	517,052
Cash and Cash Equivalents, at Carrying Value	7,585	15,738	10,461	12,957
Accrued Investment Income Receivable	4,255	4,374
Other Assets	8,369	7,876
Total assets	885,296	836,781
Liabilities
Payables for collateral under securities loaned and other transactions	30,411	33,687
Collateral financing arrangements	4,196	4,196
Junior subordinated debt securities	3,193	3,192
Other Liabilities	23,168	22,492
Total liabilities	822,313	771,823
Stockholders' Equity
Preferred stock, par value $0.01 per share; 200,000,000 shares authorized: 84,000,000 shares issued and outstanding; $2,100 aggregate liquidation preference	1	1
Common stock, par value $0.01 per share; 3,000,000,000 shares authorized; 1,125,224,024 and 1,094,880,623 shares issued at December 31, 2013 and 2012, respectively; 1,122,030,137 and 1,091,686,736 shares outstanding at December 31, 2013 and 2012, respectively	11	11
Additional paid-in capital	29,277	28,011
Retained earnings	27,332	25,205
Treasury stock, at cost; 3,193,887 shares at December 31, 2013 and 2012	(172)	(172)
Accumulated other comprehensive income (loss)	5,104	11,397	6,083	1,145
Total stockholders' equity	61,553	64,453
Total liabilities and stockholders' equity	885,296	836,781
Balance Sheet Related Disclosures [Abstract]
Amortized cost of fixed maturity securities available-for-sale	333,599	340,870
Cost of equity securities available-for-sale	3,012	2,838
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	200,000,000	200,000,000
Preferred stock, shares issued	84,000,000	84,000,000
Preferred stock, shares outstanding	84,000,000	84,000,000
Preferred stock, aggregate liquidation preference	$ 2,100.00	$ 2,100.00
Common stock, par value	$ 0.01	$ 0.01		$ 0.01
Common stock, shares authorized	3,000,000,000	3,000,000,000
Common stock, shares issued	1,125,224,024	1,094,880,623
Common stock, shares outstanding	1,122,030,137	1,091,686,736
Treasury stock, shares	3,193,887	3,193,887
Parent Company [Member]
Investments:
Available-for-sale Securities, Debt Securities	4,531	4,967
Available-for-sale Securities, Equity Securities	0	13
Short-term Investments	560	295
Other Investments	557	155
Total investments	5,648	5,430
Cash and Cash Equivalents, at Carrying Value	648	188	309	624
Accrued Investment Income Receivable	40	37
Investment in subsidiaries	76,871	81,769
Loans to subsidiaries	2,333	750
Receivables from subsidiaries	0	7
Other Assets	1,677	1,369
Total assets	87,217	89,550
Liabilities
Payables for collateral under securities loaned and other transactions	85	0
Long-term debt - unaffiliated	15,938	15,669
Long-term debt - affiliated	3,600	3,250
Collateral financing arrangements	2,797	2,797
Junior subordinated debt securities	1,748	1,748
Payables to subsidiaries	13	0
Other Liabilities	1,483	1,633
Total liabilities	25,664	25,097
Stockholders' Equity
Preferred stock, par value $0.01 per share; 200,000,000 shares authorized: 84,000,000 shares issued and outstanding; $2,100 aggregate liquidation preference	1	1
Common stock, par value $0.01 per share; 3,000,000,000 shares authorized; 1,125,224,024 and 1,094,880,623 shares issued at December 31, 2013 and 2012, respectively; 1,122,030,137 and 1,091,686,736 shares outstanding at December 31, 2013 and 2012, respectively	11	11
Additional paid-in capital	29,277	28,011
Retained earnings	27,332	25,205
Treasury stock, at cost; 3,193,887 shares at December 31, 2013 and 2012	(172)	(172)
Accumulated other comprehensive income (loss)	5,104	11,397
Total stockholders' equity	61,553	64,453
Total liabilities and stockholders' equity	87,217	89,550
Balance Sheet Related Disclosures [Abstract]
Amortized cost of fixed maturity securities available-for-sale	4,497	4,867
Cost of equity securities available-for-sale	$ 0	$ 15
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	200,000,000	200,000,000
Preferred stock, shares issued	84,000,000	84,000,000
Preferred stock, shares outstanding	84,000,000	84,000,000
Preferred stock, aggregate liquidation preference	$ 2,100.00	$ 2,100.00
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	3,000,000,000	3,000,000,000
Common stock, shares issued	1,125,224,024	1,094,880,623
Common stock, shares outstanding	1,122,030,137	1,091,686,736
Treasury stock, shares	3,193,887	3,193,887