Fair Value Measurements (Details - Assets by level) (USD $) In Millions	Sep. 30, 2011	Dec. 31, 2010
Fixed maturities:
Total fixed maturities	$ 16,272	$ 14,709
Equity securities	134	127
Short-term investments	290	174
Separate account assets
Total separate account assets	7,918	7,908
Fair Value, Inputs, Level 1 [Member]
Fixed maturities:
Federal government and agency	218	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	218	133
Equity securities	4	6
Subtotal	222	139
Short-term investments	0	0
GMIB assets	0	0
Other derivative assets	0	0
Total financial assets at fair value, excluding separate accounts	222	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	238	286
Non-guaranteed separate accounts	1,545	1,947
Total separate account assets	1,783	2,233
Fair Value, Inputs, Level 2 [Member]
Fixed maturities:
Federal government and agency	726	550
State and local government	2,461	2,467
Foreign government	1,219	1,137
Corporate	10,228	9,080
Federal agency mortgage-backed	9	10
Other mortgage-backed	80	85
Other asset-backed	358	348
Total fixed maturities	15,081	13,677
Equity securities	96	87
Subtotal	15,177	13,764
Short-term investments	290	174
GMIB assets	0	0
Other derivative assets	45	19
Total financial assets at fair value, excluding separate accounts	15,512	13,957
Financial liabilities at fair value:
GMIB liabilities	0	0
Other derivative liabilities	24	32
Total financial liabilities at fair value	24	32
Separate account assets
Guaranteed separate accounts	1,446	1,418
Non-guaranteed separate accounts	3,936	3,663
Total separate account assets	5,382	5,081
Fair Value, Inputs, Level 3 [Member]
Fixed maturities:
Federal government and agency	3	4
State and local government	0	0
Foreign government	21	17
Corporate	395	364
Federal agency mortgage-backed	0	0
Other mortgage-backed	1	3
Other asset-backed	553	511
Total fixed maturities	973	899
Equity securities	34	34
Subtotal	1,007	933
Short-term investments	0	0
GMIB assets	741	480
Other derivative assets	0	0
Total financial assets at fair value, excluding separate accounts	1,748	1,413
Financial liabilities at fair value:
GMIB liabilities	1,384	903
Other derivative liabilities	0	0
Total financial liabilities at fair value	1,384	903
Separate account assets
Guaranteed separate accounts	0	0
Non-guaranteed separate accounts	753	594
Total separate account assets	753	594
Level 3 Financial Assets Carried At Fair Value [Abstract]
Other asset and mortgage-backed securities valued using pricing models	554	514
Corporate and government bonds valued using pricing models	358	312
Corporate bonds valued at transaction price	61	73
Equity securities valued at transaction price	$ 34	$ 34