Fair Value of Assets and Liabilities (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013
Assets
Fixed income securities	$ 61,161	$ 60,910
Equity securities	5,297	5,097
Short-term Investments	2,573	2,393
Free-standing derivatives, assets	5		4
Separate account assets	4,878	5,039
Other liabilities:
Free-standing derivatives, liabilities	(12)		(24)
Liabilities held for sale	(14,641)	(14,899)
LBL
Assets
Assets held for sale	15,390	15,593
Other liabilities:
Liabilities held for sale	(14,641)	(14,899)
U.S. government and agencies
Assets
Fixed income securities	3,806	2,913
Municipal
Assets
Fixed income securities	8,716	8,723
Corporate
Assets
Fixed income securities	41,159	40,603
Foreign government
Assets
Fixed income securities	1,737	1,824
Asset-backed securities ("ABS")
Assets
Fixed income securities	3,497	4,518
Residential mortgage-backed securities ("RMBS")
Assets
Fixed income securities	1,438	1,474
Commercial mortgage-backed securities ("CMBS")
Assets
Fixed income securities	783	829
Redeemable preferred stock
Assets
Fixed income securities	25	26
Quoted prices in active markets for identical assets (Level 1)
Assets
Total assets at fair value	14,561	13,715
Assets as a percent of assets measured at fair value	17.00%	16.00%
Other liabilities:
Total liabilities at fair value	(1)
Significant other observable inputs (Level 2)
Assets
Total assets at fair value	69,189	69,831
Assets as a percent of assets measured at fair value	80.70%	81.40%
Other liabilities:
Total liabilities at fair value	(132)	(194)
Liabilities as a percent of liabilities measured at fair value	1.20%	1.60%
Significant unobservable inputs (Level 3)
Assets
Total assets at fair value	1,979	2,239
Assets as a percent of assets measured at fair value	2.30%	2.60%
Other liabilities:
Total liabilities at fair value	(11,202)	(11,655)
Liabilities as a percent of liabilities measured at fair value	98.90%	98.50%
Counterparty and cash collateral netting
Assets
Total assets at fair value	(19)	(24)
Other liabilities:
Total liabilities at fair value	7	11
Liabilities as a percent of liabilities measured at fair value	(0.10%)	(0.10%)
Fair Value
Assets
Total assets at fair value	85,710	85,761
Assets as a percent of assets measured at fair value	100.00%	100.00%
Mortgage loans		8
Limited partnership interests	10	16
Other liabilities:
Total liabilities at fair value	(11,328)	(11,838)
Liabilities as a percent of liabilities measured at fair value	100.00%	100.00%
Recurring | LBL
Assets
Assets held for sale	11,620	12,028
Other liabilities:
Liabilities held for sale	(230)	(246)
Recurring | Quoted prices in active markets for identical assets (Level 1)
Assets
Fixed income securities	2,745	1,801
Equity securities	4,571	4,268
Short-term Investments	677	752
Separate account assets	4,878	5,039
Other assets	2	1
Assets held for sale	1,688	1,854
Total assets at fair value	14,561	13,715
Other liabilities:
Free-standing derivatives, liabilities	(1)
Total liabilities at fair value	(1)
Recurring | Quoted prices in active markets for identical assets (Level 1) | U.S. government and agencies
Assets
Fixed income securities	2,745	1,801
Recurring | Significant other observable inputs (Level 2)
Assets
Fixed income securities	56,846	57,412
Equity securities	709	697
Short-term Investments	1,866	1,626
Free-standing derivatives, assets	183	284
Assets held for sale	9,585	9,812
Total assets at fair value	69,189	69,831
Other liabilities:
Free-standing derivatives, liabilities	(132)	(194)
Total liabilities at fair value	(132)	(194)
Recurring | Significant other observable inputs (Level 2) | U.S. government and agencies
Assets
Fixed income securities	1,055	1,105
Recurring | Significant other observable inputs (Level 2) | Municipal
Assets
Fixed income securities	8,381	8,380
Recurring | Significant other observable inputs (Level 2) | Corporate
Assets
Fixed income securities	40,160	39,494
Recurring | Significant other observable inputs (Level 2) | Foreign government
Assets
Fixed income securities	1,737	1,824
Recurring | Significant other observable inputs (Level 2) | Asset-backed securities ("ABS")
Assets
Fixed income securities	3,323	4,326
Recurring | Significant other observable inputs (Level 2) | Residential mortgage-backed securities ("RMBS")
Assets
Fixed income securities	1,436	1,472
Recurring | Significant other observable inputs (Level 2) | Commercial mortgage-backed securities ("CMBS")
Assets
Fixed income securities	729	786
Recurring | Significant other observable inputs (Level 2) | Redeemable preferred stock
Assets
Fixed income securities	25	25
Recurring | Significant unobservable inputs (Level 3)
Assets
Fixed income securities	1,570	1,697
Equity securities	17	132
Short-term Investments	30	15
Free-standing derivatives, assets	5	9
Assets held for sale	347	362
Total assets at fair value	1,969	2,215
Contract holder funds:
Derivatives embedded in life and annuity contracts	(319)	(307)
Other liabilities:
Free-standing derivatives, liabilities	(12)	(14)
Liabilities held for sale	(230)	(246)
Total liabilities at fair value	(561)	(567)
Recurring | Significant unobservable inputs (Level 3) | U.S. government and agencies
Assets
Fixed income securities	6	7
Recurring | Significant unobservable inputs (Level 3) | Municipal
Assets
Fixed income securities	335	343
Recurring | Significant unobservable inputs (Level 3) | Corporate
Assets
Fixed income securities	999	1,109
Recurring | Significant unobservable inputs (Level 3) | Asset-backed securities ("ABS")
Assets
Fixed income securities	174	192
Recurring | Significant unobservable inputs (Level 3) | Residential mortgage-backed securities ("RMBS")
Assets
Fixed income securities	2	2
Recurring | Significant unobservable inputs (Level 3) | Commercial mortgage-backed securities ("CMBS")
Assets
Fixed income securities	54	43
Recurring | Significant unobservable inputs (Level 3) | Redeemable preferred stock
Assets
Fixed income securities		1
Recurring | Counterparty and cash collateral netting
Assets
Free-standing derivatives, assets	(19)	(24)
Total assets at fair value	(19)	(24)
Other liabilities:
Free-standing derivatives, liabilities	7	11
Total liabilities at fair value	7	11
Recurring | Fair Value
Assets
Fixed income securities	61,161	60,910
Equity securities	5,297	5,097
Short-term Investments	2,573	2,393
Free-standing derivatives, assets	169	269
Separate account assets	4,878	5,039
Other assets	2	1
Assets held for sale	11,620	12,028
Total assets at fair value	85,700	85,737
Contract holder funds:
Derivatives embedded in life and annuity contracts	(319)	(307)
Other liabilities:
Free-standing derivatives, liabilities	(138)	(197)
Liabilities held for sale	(230)	(246)
Total liabilities at fair value	(687)	(750)
Recurring | Fair Value | U.S. government and agencies
Assets
Fixed income securities	3,806	2,913
Recurring | Fair Value | Municipal
Assets
Fixed income securities	8,716	8,723
Recurring | Fair Value | Corporate
Assets
Fixed income securities	41,159	40,603
Recurring | Fair Value | Foreign government
Assets
Fixed income securities	1,737	1,824
Recurring | Fair Value | Asset-backed securities ("ABS")
Assets
Fixed income securities	3,497	4,518
Recurring | Fair Value | Residential mortgage-backed securities ("RMBS")
Assets
Fixed income securities	1,438	1,474
Recurring | Fair Value | Commercial mortgage-backed securities ("CMBS")
Assets
Fixed income securities	783	829
Recurring | Fair Value | Redeemable preferred stock
Assets
Fixed income securities	25	26
Non-recurring | Significant unobservable inputs (Level 3)
Assets
Total assets at fair value	10	24
Other liabilities:
Total liabilities at fair value	(10,641)	(11,088)
Non-recurring | Fair Value
Assets
Total assets at fair value	10	24
Other liabilities:
Total liabilities at fair value	$ (10,641)	$ (11,088)