Fair Value Measurements (Details - Assets by level) (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Fixed maturities:
Total fixed maturities	$ 15,505	$ 14,709
Equity securities	149	127
Short-term investments	204	174
Financial liabilities at fair value:
Total financial liabilities at fair value		903
Separate account assets
Total separate account assets	8,327	7,908
Fair Value, Inputs, Level 1 [Member]
Fixed maturities:
Federal government and agency	207	133
State and local government	0	0
Foreign government	0	0
Corporate	0	0
Federal agency mortgage-backed	0	0
Other mortgage-backed	0	0
Other asset-backed	0	0
Total fixed maturities	207	133
Equity securities	8	6
Subtotal	215	139
Short-term investments	0	0
GMIB assets	0	0
Other derivative assets	0	0
Total financial assets at fair value, excluding separate accounts	215	139
Financial liabilities at fair value:
GMIB liabilities	0	0
Other derivative liabilities	0	0
Total financial liabilities at fair value	0	0
Separate account assets
Guaranteed separate accounts	292	286
Non-guaranteed separate accounts	1,864	1,947
Total separate account assets	2,156	2,233
Fair Value, Inputs, Level 2 [Member]
Fixed maturities:
Federal government and agency	556	550
State and local government	2,450	2,467
Foreign government	1,239	1,137
Corporate	9,726	9,080
Federal agency mortgage-backed	10	10
Other mortgage-backed	70	85
Other asset-backed	335	348
Total fixed maturities	14,386	13,677
Equity securities	103	87
Subtotal	14,489	13,764
Short-term investments	204	174
GMIB assets	0	0
Other derivative assets	22	19
Total financial assets at fair value, excluding separate accounts	14,715	13,957
Financial liabilities at fair value:
GMIB liabilities	0	0
Other derivative liabilities	43	32
Total financial liabilities at fair value	43	32
Separate account assets
Guaranteed separate accounts	1,410	1,418
Non-guaranteed separate accounts	4,117	3,663
Total separate account assets	5,527	5,081
Fair Value, Inputs, Level 3 [Member]
Fixed maturities:
Federal government and agency	4	4
State and local government	0	0
Foreign government	17	17
Corporate	369	364
Federal agency mortgage-backed	0	0
Other mortgage-backed	1	3
Other asset-backed	521	511
Total fixed maturities	912	899
Equity securities	38	34
Subtotal	950	933
Short-term investments	0	0
GMIB assets	490	480
Other derivative assets	0	0
Total financial assets at fair value, excluding separate accounts	1,440	1,413
Financial liabilities at fair value:
GMIB liabilities	917	903
Other derivative liabilities	0	0
Total financial liabilities at fair value	917
Separate account assets
Guaranteed separate accounts	0	0
Non-guaranteed separate accounts	644	594
Total separate account assets	644	594
Level 3 Financial Assets Carried At Fair Value [Abstract]
Other asset and mortgage-backed securities valued using pricing models	522	514
Corporate and government bonds valued using pricing models	328	312
Corporate bonds valued at transaction price	62	73
Equity securities valued at transaction price	$ 38	$ 34