Segment Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Segment Reporting Information [Line Items]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ (467)	$ (190)	$ 28	$ (431)
Property and Casualty, Personal Insurance Product Line [Member]
Segment Reporting Information [Line Items]
Affinity Earned Premiums	755	714	0	0
Property & Casualty Commercial [Member]
Segment Reporting Information [Line Items]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	199	192	441	445
Group Benefits [Member]
Segment Reporting Information [Line Items]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	55	61	106	103
Consumer Markets [Member]
Segment Reporting Information [Line Items]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(30)	15	69	92
Talcott Resolution [Member]
Segment Reporting Information [Line Items]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(504)	(332)	(359)	(626)
Mutual Funds [Member]
Segment Reporting Information [Line Items]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	21	20	42	38
Property & Casualty Other Operations [Member]
Segment Reporting Information [Line Items]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(144)	(71)	(122)	(50)
Corporate Segment [Member]
Segment Reporting Information [Line Items]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ (64)	$ (75)	$ (149)	$ (433)