Closed Block (Revenues and Expenses) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Revenues
Premiums	$ 473	$ 489	$ 919	$ 953
Net investment income	522	529	1,052	1,062
Net investment gains (losses)	8	24	8	27
Net derivative gains (losses)	(3)	7	(4)	15
Total revenues	1,000	1,049	1,975	2,057
Expenses
Policyholder benefits and claims	645	669	1,269	1,312
Policyholder dividends	243	247	476	489
Other expenses	38	43	79	85
Total expenses	926	959	1,824	1,886
Revenues, net of expenses before provision for income tax expense (benefit)	74	90	151	171
Provision for income tax expense (benefit)	26	33	53	60
Revenues, net of expenses and provision for income tax expense (benefit)	$ 48	$ 57	$ 98	$ 111