Closed Block (Revenues and Expenses) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenues
Premiums	$ 1,987	$ 2,139	$ 2,306
Net investment income	2,130	2,188	2,231
Net investment gains (losses)	25	61	32
Net derivative gains (losses)	(6)	(12)	8
Total revenues	4,136	4,376	4,577
Expenses
Policyholder benefits and claims	2,702	2,783	2,991
Policyholder dividends	979	1,072	1,137
Other expenses	165	179	193
Total expenses	3,846	4,034	4,321
Revenues, net of expenses before provision for income tax expense (benefit)	290	342	256
Provision for income tax expense (benefit)	101	120	89
Revenues, net of expenses and provision for income tax expense (benefit) from continuing operations	189	222	167
Revenues, net of expenses and provision for income tax expense (benefit) from discontinued operations	0	10	1
Revenues, net of expenses and provision for income tax expense (benefit)	$ 189	$ 232	$ 168