Closed Block (Revenues and Expenses) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Revenues
Premiums	$ 461	$ 478	$ 1,380	$ 1,431
Net investment income	516	514	1,568	1,576
Net investment gains (losses)	0	(7)	8	20
Net derivative gains (losses)	17	(16)	13	(1)
Total revenues	994	969	2,969	3,026
Expenses
Policyholder benefits and claims	620	651	1,889	1,963
Policyholder dividends	255	251	731	740
Other expenses	39	39	118	124
Total expenses	914	941	2,738	2,827
Revenues, net of expenses before provision for income tax expense (benefit)	80	28	231	199
Provision for income tax expense (benefit)	28	10	81	70
Revenues, net of expenses and provision for income tax expense (benefit)	$ 52	$ 18	$ 150	$ 129