Condensed Financial Information (Parent Company) (Condensed Statements of Cash Flows) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities
Net income (loss)	$ 3,368	$ 1,324	$ 6,423
Goodwill impairment	0	1,868	0
Net cash provided by (used in) operating activities	16,131	17,160	10,273
Cash flows from investing activities
Sales of fixed maturity securities	117,523	103,823	104,302
Purchases of fixed maturity securities	(117,826)	(115,793)	(116,939)
Sales of equity securities	725	1,140	2,006
Cash received in connection with freestanding derivatives	1,567	1,933	2,815
Cash paid in connection with freestanding derivatives	(6,710)	(3,258)	(3,478)
Net change in short-term investments	2,955	593	(7,949)
Other, net	(86)	(158)	(169)
Net cash provided by (used in) investing activities	(15,165)	(11,929)	(22,218)
Cash flows from financing activities
Net change in payables for collateral under securities loaned and other transactions	(3,276)	(29)	6,444
Long-term debt issued	1,372	750	1,346
Long-term debt repaid	(1,746)	(1,702)	(2,042)
Cash received (paid) in connection with collateral financing arrangements	0	(44)	37
Common stock issued, net of issuance costs	1,000	1,000	2,950
Redemption of convertible preferred stock	0	0	(2,805)
Preferred stock redemption premium	0	0	(146)
Dividends on preferred stock	(122)	(122)	(122)
Dividends on common stock	(1,119)	(811)	(787)
Other, net	(192)	609	212
Net cash provided by (used in) financing activities	(8,907)	35	9,382
Change in cash and cash equivalents	(8,153)	5,277	(2,585)
Cash and cash equivalents, from continuing operations, beginning of year	15,738	10,461	12,957
Cash and cash equivalents, from continuing operations, end of year	7,585	15,738	10,461
Supplemental disclosures of cash flow information:
Net cash paid (received) for Interest	1,270	1,335	1,565
Parent Company [Member]
Cash flows from operating activities
Net income (loss)	3,368	1,324	6,423
Earnings of subsidiaries	(4,163)	(3,444)	(6,979)
Dividends from subsidiaries	2,734	3,177	2,578
Goodwill impairment	0	1,384	0
Other, net	(74)	177	697
Net cash provided by (used in) operating activities	1,865	2,618	2,719
Cash flows from investing activities
Sales of fixed maturity securities	5,108	5,645	3,265
Purchases of fixed maturity securities	(4,795)	(6,200)	(4,787)
Sales of equity securities	13	2	1
Cash received in connection with freestanding derivatives	424	197	257
Cash paid in connection with freestanding derivatives	(465)	(203)	(276)
Sales of businesses	17	0	180
Expense paid on behalf of subsidiaries	(85)	(80)	(75)
Repayments of loans to subsidiaries	645	175	1,275
Issuances of loans to subsidiaries	(1,942)	(175)	0
Redemption of preferred stock of subsidiary	300	0	0
Investment in preferred stock of subsidiary	0	0	(250)
Returns of capital from subsidiaries	267	9	591
Capital contributions to subsidiaries	(748)	(1,223)	(1,439)
Net change in short-term investments	(265)	372	(620)
Other, net	(49)	(48)	(10)
Net cash provided by (used in) investing activities	(1,575)	(1,529)	(1,888)
Cash flows from financing activities
Net change in payables for collateral under securities loaned and other transactions	85	(1,180)	520
Long-term debt issued	994	750	0
Long-term debt repaid	(750)	(797)	(750)
Cash received (paid) in connection with collateral financing arrangements	0	(44)	37
Common stock issued, net of issuance costs	1,000	1,000	2,950
Redemption of convertible preferred stock	0	0	(2,805)
Preferred stock redemption premium	0	0	(146)
Dividends on preferred stock	(122)	(122)	(122)
Dividends on common stock	(1,119)	(811)	(787)
Other, net	82	(6)	(43)
Net cash provided by (used in) financing activities	170	(1,210)	(1,146)
Change in cash and cash equivalents	460	(121)	(315)
Cash and cash equivalents, from continuing operations, beginning of year	188	309	624
Cash and cash equivalents, from continuing operations, end of year	648	188	309
Supplemental disclosures of cash flow information:
Net cash paid (received) for Interest	1,100	937	997
Net cash paid (received) for Income tax	69	24	(659)
Non-cash transactions:
Dividends from subsidiaries	32	203	170
Returns of capital from subsidiaries	0	356	47
Capital contributions to subsidiaries	121	559	316
Assumption of long-term debt from subsidiary	0	2,000	0
Investment in preferred stock of subsidiary	0	2,000	0
Issuance of long-term debt to subsidiary	350	750	0
Issuance of loan to subsidiary	350	750	0
Allocation of interest expense to subsidiary	28	33	29
Allocation of interest income to subsidiary	$ 68	$ 76	$ 68