Closed Block (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Revenues
Premiums	$ 512	$ 554	$ 1,538	$ 1,657
Net investment income	555	553	1,644	1,697
Net investment gains (losses)	6	22	30	32
Net derivative gains (losses)	(9)	17	(7)	3
Total revenues	1,064	1,146	3,205	3,389
Expenses
Policyholder benefits and claims	654	731	2,016	2,166
Policyholder dividends	278	304	821	897
Other expenses	45	48	136	146
Total expenses	977	1,083	2,973	3,209
Revenues, net of expenses before provision for income tax expense (benefit)	87	63	232	180
Provision for income tax expense (benefit)	30	25	82	63
Revenues, net of expenses and provision for income tax expense (benefit) from continuing operations	57	38	150	117
Revenues, net of expenses and provision for income tax expense (benefit) from discontinued operations	0	0	4	1
Revenues, net of expenses and provision for income tax expense (benefit) and discontinued operations	$ 57	$ 38	$ 154	$ 118