Closed Block (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Revenues
Premiums	$ 528	$ 568	$ 1,026	$ 1,103
Net investment income	539	580	1,089	1,144
Net investment gains (losses)	13	3	24	10
Net derivative gains (losses)	11	4	2	(14)
Total revenues	1,091	1,155	2,141	2,243
Expenses
Policyholder benefits and claims	700	746	1,362	1,435
Policyholder dividends	275	296	543	593
Other expenses	46	49	91	98
Total expenses	1,021	1,091	1,996	2,126
Revenues, net of expenses before provision for income tax expense (benefit)	70	64	145	117
Provision for income tax expense (benefit)	25	21	52	38
Revenues, net of expenses and provision for income tax expense (benefit) from continuing operations	45	43	93	79
Revenues, net of expenses and provision for income tax expense (benefit) from discontinued operations	0	1	4	1
Revenues, net of expenses and provision for income tax expense (benefit) and discontinued operations	$ 45	$ 44	$ 97	$ 80