Consolidated Variable Interest Entities - Effect of Consolidating FG VIE's on Financial Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016		Mar. 31, 2015	Dec. 31, 2015
Variable Interest Entity [Line Items]
Net earned premiums	$ 183	[1]	$ 142
Net investment income	99		101
Net realized investment gains (losses)	(13)		16
Fair value gains (losses) on FG VIEs	18		(7)
Other income (loss)	34		(9)
Loss and LAE	90		18
Income (loss) before income taxes	65		266
Provision (benefit) for income taxes	6		65
Net income (loss)	59		201
Net cash flows provided by (used in) operating activities	(90)		23
Effect on shareholders’ equity (decrease) increase	6,113			$ 6,063
Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Net earned premiums	(5)		(5)
Net investment income	(5)		(3)
Net realized investment gains (losses)	1		0
Fair value gains (losses) on FG VIEs	18		(7)
Loss and LAE	6		5
Income (loss) before income taxes	15		(10)
Provision (benefit) for income taxes	5		(4)
Net income (loss)	10		(6)
Net cash flows provided by (used in) operating activities	6		$ 18
Effect on shareholders’ equity (decrease) increase	$ (12)			$ (23)

[1] Excludes $5 million and $5 million for First Quarter 2016 and 2015, respectively, related to consolidated FG VIEs.