Related Party Transactions (Effects of Affiliated Reinsurance on Statements of Operations) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Premiums:
Net premiums	$ 283	$ 178
Universal life and investment-type product policy fees:
Net universal life and investment-type product policy fees	718	805
Other revenues:
Other revenues	120	142
Policyholder benefits and claims:
Net policyholder benefits and claims	592	568
Interest credited to policyholder account balances:
Net interest credited to policyholder account balances	257	269
Other expenses:
Net other expenses	647	677
Affiliated Entity
Universal life and investment-type product policy fees:
Net universal life and investment-type product policy fees	63	67
Other revenues:
Other revenues	50	53
Other expenses:
Net other expenses	391	333
Affiliated Entity | Assumed
Premiums:
Reinsurance assumed	25	10
Universal life and investment-type product policy fees:
Reinsurance assumed	31	81
Other revenues:
Reinsurance assumed	0	4
Policyholder benefits and claims:
Reinsurance assumed	35	37
Interest credited to policyholder account balances:
Reinsurance assumed	19	23
Other expenses:
Reinsurance assumed	15	18
Affiliated Entity | Ceded
Premiums:
Reinsurance ceded	(200)	(263)
Universal life and investment-type product policy fees:
Reinsurance ceded	(87)	(94)
Other revenues:
Reinsurance ceded	58	71
Policyholder benefits and claims:
Reinsurance ceded	(240)	(310)
Interest credited to policyholder account balances:
Reinsurance ceded	(37)	(33)
Other expenses:
Reinsurance ceded	50	22
Affiliated Entity | Reinsurance [Member]
Premiums:
Net premiums	(175)	(253)
Universal life and investment-type product policy fees:
Net universal life and investment-type product policy fees	(56)	(13)
Other revenues:
Other revenues	58	75
Policyholder benefits and claims:
Net policyholder benefits and claims	(205)	(273)
Interest credited to policyholder account balances:
Net interest credited to policyholder account balances	(18)	(10)
Other expenses:
Net other expenses	$ 65	$ 40