General (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Premiums and contract charges by product
Premiums	$ 156	$ 145
Contract charges	267	264
Total premiums and contract charges	423	409
Traditional life insurance
Premiums and contract charges by product
Premiums	123	112
Immediate annuities with life contingencies
Premiums and contract charges by product
Premiums	5	7
Accident and health insurance
Premiums and contract charges by product
Premiums	28	26
Interest-sensitive life insurance
Premiums and contract charges by product
Contract charges	261	261
Fixed annuities
Premiums and contract charges by product
Contract charges	$ 6	$ 3