Segment Information (Details) (Textual) (Personal Lines [Member], USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011
Personal Lines [Member]
Segment Information (Textuals) [Abstract]
AARP earned premiums	$ 694	$ 716	$ 1,400