Reinsurance - Guaranteed Minimum Death Benefit Contracts, Future Policy Benefits (Details) (Variable Annuity [Member], Guaranteed Minimum Death Benefit [Member], USD $) In Millions, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2014	Dec. 31, 2013
Variable Annuity [Member] | Guaranteed Minimum Death Benefit [Member]
Activity in future policy benefits reserves for GMDB business [Line Items]
Future Policy Benefit Reserve, beginning balance, gross	$ 1,396	$ 1,090
Claims payable, beginning balance, gross	18	24
Less: Reinsurance and other amounts recoverable	1,317	42
Balance at January 1, net	97	1,072
Add: Incurred benefits	2	699
Less: Paid benefits	0	1,674
Ending balance, net	99	97
Claims payable, ending balance, gross	19	18
Add: Reinsurance and other amounts recoverable	1,234	1,317
Future Policy Benefit Reserve, ending balance, gross	$ 1,314	$ 1,396