Fair Value of Assets and Liabilities (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013
Assets
Fixed income securities	$ 62,313	$ 60,910
Equity securities	4,335	5,097
Short-term Investments	2,463	2,393
Free-standing derivatives, assets	3		6
Separate account assets	4,521	5,039
Other liabilities:
Free-standing derivatives, liabilities	(9)		(16)
Liabilities held for sale		(14,899)
LBL
Assets
Assets held for sale		15,593
Other liabilities:
Liabilities held for sale		(14,899)
U.S. government and agencies
Assets
Fixed income securities	4,309	2,913
Municipal
Assets
Fixed income securities	8,535	8,723
Corporate
Assets
Fixed income securities	41,071	40,603
Foreign government
Assets
Fixed income securities	1,693	1,824
Asset-backed securities ("ABS")
Assets
Fixed income securities	4,709	4,518
Residential mortgage-backed securities ("RMBS")
Assets
Fixed income securities	1,289	1,474
Commercial mortgage-backed securities ("CMBS")
Assets
Fixed income securities	681	829
Redeemable preferred stock
Assets
Fixed income securities	26	26
Quoted prices in active markets for identical assets (Level 1)
Assets
Total assets at fair value	12,309	13,715
Assets as a percent of assets measured at fair value	16.70%	16.00%
Other liabilities:
Total liabilities at fair value	(1)
Liabilities as a percent of liabilities measured at fair value	0.30%
Significant other observable inputs (Level 2)
Assets
Total assets at fair value	59,861	69,831
Assets as a percent of assets measured at fair value	81.20%	81.40%
Other liabilities:
Total liabilities at fair value	(52)	(194)
Liabilities as a percent of liabilities measured at fair value	14.30%	1.60%
Significant unobservable inputs (Level 3)
Assets
Total assets at fair value	1,576	2,239
Assets as a percent of assets measured at fair value	2.10%	2.60%
Other liabilities:
Total liabilities at fair value	(330)	(11,655)
Liabilities as a percent of liabilities measured at fair value	90.60%	98.50%
Fair Value
Assets
Total assets at fair value	73,734	85,761
Counterparty and cash collateral netting	(12)	(24)
Assets as a percent of assets measured at fair value	100.00%	100.00%
Mortgage loans		8
Limited partnership interests	28	16
Other liabilities:
Total liabilities at fair value	(364)	(11,838)
Counterparty and cash collateral netting	19	11
Liabilities as a percent of liabilities measured at fair value	100.00%	100.00%
Counterparty and cash collateral netting as a percent of liabilities measured at fair value	(5.20%)	(0.10%)
Recurring | LBL
Assets
Assets held for sale		12,028
Other liabilities:
Liabilities held for sale		(246)
Recurring | Quoted prices in active markets for identical assets (Level 1)
Assets
Fixed income securities	3,245	1,801
Equity securities	3,959	4,268
Short-term Investments	584	752
Separate account assets	4,521	5,039
Other assets		1
Assets held for sale		1,854
Total assets at fair value	12,309	13,715
Other liabilities:
Free-standing derivatives, liabilities	(1)
Recurring | Quoted prices in active markets for identical assets (Level 1) | U.S. government and agencies
Assets
Fixed income securities	3,245	1,801
Recurring | Significant other observable inputs (Level 2)
Assets
Fixed income securities	57,607	57,412
Equity securities	293	697
Short-term Investments	1,879	1,626
Free-standing derivatives, assets	82	284
Assets held for sale		9,812
Total assets at fair value	59,861	69,831
Other liabilities:
Free-standing derivatives, liabilities	(52)	(194)
Total liabilities at fair value		(194)
Recurring | Significant other observable inputs (Level 2) | U.S. government and agencies
Assets
Fixed income securities	1,058	1,105
Recurring | Significant other observable inputs (Level 2) | Municipal
Assets
Fixed income securities	8,245	8,380
Recurring | Significant other observable inputs (Level 2) | Corporate
Assets
Fixed income securities	40,135	39,494
Recurring | Significant other observable inputs (Level 2) | Foreign government
Assets
Fixed income securities	1,693	1,824
Recurring | Significant other observable inputs (Level 2) | Asset-backed securities ("ABS")
Assets
Fixed income securities	4,535	4,326
Recurring | Significant other observable inputs (Level 2) | Residential mortgage-backed securities ("RMBS")
Assets
Fixed income securities	1,288	1,472
Recurring | Significant other observable inputs (Level 2) | Commercial mortgage-backed securities ("CMBS")
Assets
Fixed income securities	627	786
Recurring | Significant other observable inputs (Level 2) | Redeemable preferred stock
Assets
Fixed income securities	26	25
Recurring | Significant unobservable inputs (Level 3)
Assets
Fixed income securities	1,461	1,697
Equity securities	83	132
Short-term Investments		15
Free-standing derivatives, assets	3	9
Other assets	1
Assets held for sale		362
Total assets at fair value	1,548	2,215
Contract holder funds:
Derivatives embedded in life and annuity contracts	(321)	(307)
Other liabilities:
Free-standing derivatives, liabilities	(9)	(14)
Liabilities held for sale		(246)
Total liabilities at fair value		(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	290	343
Recurring | Significant unobservable inputs (Level 3) | Corporate
Assets
Fixed income securities	936	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	1	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 | Fair Value
Assets
Fixed income securities	62,313	60,910
Equity securities	4,335	5,097
Short-term Investments	2,463	2,393
Free-standing derivatives, assets	73	269
Separate account assets	4,521	5,039
Other assets	1	1
Assets held for sale		12,028
Total assets at fair value	73,706	85,737
Counterparty and cash collateral netting	(12)	(24)
Contract holder funds:
Derivatives embedded in life and annuity contracts	(321)	(307)
Other liabilities:
Free-standing derivatives, liabilities	(43)	(197)
Liabilities held for sale		(246)
Total liabilities at fair value		(750)
Counterparty and cash collateral netting	19	11
Liabilities as a percent of liabilities measured at fair value	100.00%	100.00%
Recurring | Fair Value | U.S. government and agencies
Assets
Fixed income securities	4,309	2,913
Recurring | Fair Value | Municipal
Assets
Fixed income securities	8,535	8,723
Recurring | Fair Value | Corporate
Assets
Fixed income securities	41,071	40,603
Recurring | Fair Value | Foreign government
Assets
Fixed income securities	1,693	1,824
Recurring | Fair Value | Asset-backed securities ("ABS")
Assets
Fixed income securities	4,709	4,518
Recurring | Fair Value | Residential mortgage-backed securities ("RMBS")
Assets
Fixed income securities	1,289	1,474
Recurring | Fair Value | Commercial mortgage-backed securities ("CMBS")
Assets
Fixed income securities	681	829
Recurring | Fair Value | Redeemable preferred stock
Assets
Fixed income securities	26	26
Non-recurring | Significant unobservable inputs (Level 3)
Assets
Total assets at fair value	28	24
Other liabilities:
Total liabilities at fair value		(11,088)
Non-recurring | Fair Value
Assets
Total assets at fair value	28	24
Other liabilities:
Total liabilities at fair value		$ (11,088)