SCHEDULE V - VALUATION ALLOWANCES AND QUALIFYING ACCOUNTS (Details) (Allowance for estimated losses on mortgage loans, USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Allowance for estimated losses on mortgage loans
Valuation allowances and qualifying accounts
Balance as of beginning of period	$ 21	$ 42	$ 63
Additions charged to costs and expenses	(5)	(11)	(5)
Deductions	8	10	16
Balance as of end of period	$ 8	$ 21	$ 42