Statutory Net Income and Surplus and Dividend Restrictions (Details) (USD $)	3 Months Ended						12 Months Ended
	Dec. 31, 2014	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2012	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
statutorydisclosures[LineItems]
statutoryaccountingpracticesstatutorynetincome							$ 393,000,000	$ 406,000,000	$ 217,000,000
Statutory Surplus Balance	606,000,000		443,000,000				606,000,000	443,000,000
StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPayments	61,000,000						61,000,000
Distribution to parent	$ 75,000,000	$ 267,000,000	$ 100,000,000	$ 184,000,000	$ 160,000,000	$ 248,000,000	$ 342,000,000	$ 284,000,000	$ 408,000,000