Consolidated Variable Interest Entities - Effect of Consolidating FG VIE's on Financial Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Variable Interest Entity [Line Items]
Net earned premiums	$ 142	$ 132
Net investment income	101	103
Net realized investment gains (losses)	16	2
Fair value gains (losses) on FG VIEs	(7)	157
Other income (loss)	(9)	21
Loss and LAE	18	41
Income (loss) before income taxes	266	69
Provision (benefit) for income taxes	65	27
Net income (loss)	201	42
Net cash flows provided by (used in) operating activities	23	101
Effect on shareholders’ equity (decrease) increase	5,786		5,758
Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Net earned premiums	(5)	(17)
Net investment income	(3)	(3)
Fair value gains (losses) on FG VIEs	(7)	157
Other income (loss)	0	(2)
Loss and LAE	5	(1)
Income (loss) before income taxes	(10)	134
Provision (benefit) for income taxes	(4)	47
Net income (loss)	(6)	87
Net cash flows provided by (used in) operating activities	18	(8)
Effect on shareholders’ equity (decrease) increase	$ (49)		$ (44)