Indemnity Supplemental Information (Details 3) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Condensed financial statements
Service agreement fee received	$ 15	$ 17
Net investment income received	233	224
Limited partnership distributions	54	67
Commissions and bonuses paid to agents	(320)	(313)
Income taxes paid	(227)	(13)
Net cash provided by operating activities	191	200
Net cash provided by (used in) investing activities	(57)	(397)
Net cash used in financing activities	(79)	(124)
Net increase (decrease) in cash and cash equivalents	55	(321)
Cash and cash equivalents at beginning of period	185	430
Cash and cash equivalents at end of period	240	109
Indemnity
Condensed financial statements
Management fee received	555	521
Service agreement fee received	15	17
Net investment income received	14	13
Limited partnership distributions	6	10
Decrease in reimbursements collected from affiliates	(1)	(18)
Commissions and bonuses paid to agents	(320)	(313)
Salaries and wages paid	(67)	(62)
Pension contribution and employee benefits paid	(30)	(11)
General operating expenses paid	(68)	(68)
Income taxes paid	(38)	(28)
Net cash provided by operating activities	66	61
Net cash provided by (used in) investing activities	33	(181)
Net cash used in financing activities	(97)	(142)
Net increase (decrease) in cash and cash equivalents	2	(262)
Cash and cash equivalents at beginning of period	11	310
Cash and cash equivalents at end of period	$ 13	$ 48