Indemnity Supplemental Information (Details 3) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Condensed financial statements
Service agreement fee received	$ 15	$ 15
Net investment income received	222	233
Limited partnership distributions	79	54
Commissions and bonuses paid to agents	(356)	(320)
Income taxes paid	(149)	(227)
Net cash provided by (used in) operating activities	330	191
Net cash provided by (used in) investing activities	(335)	(57)
Net cash provided by (used in) financing activities	(30)	(79)
Net increase (decrease) in cash and cash equivalents	(35)	55
Cash and cash equivalents at beginning of period	400	185
Cash and cash equivalents at end of period	365	240
Indemnity
Condensed financial statements
Management fee received	604	555
Service agreement fee received	15	15
Net investment income received	11	14
Limited partnership distributions	12	6
Decrease in reimbursements collected from affiliates	0	(1)
Commissions and bonuses paid to agents	(356)	(320)
Salaries and wages paid	(76)	(67)
Pension contribution and employee benefits paid	(28)	(30)
General operating expenses paid	(83)	(68)
Income taxes paid	(42)	(38)
Net cash provided by (used in) operating activities	57	66
Net cash provided by (used in) investing activities	15	33
Net cash provided by (used in) financing activities	(45)	(97)
Net increase (decrease) in cash and cash equivalents	27	2
Cash and cash equivalents at beginning of period	12	11
Cash and cash equivalents at end of period	$ 39	$ 13