Indemnity Supplemental Information (Details 2) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income attributable to Indemnity shareholder interest
Service agreement revenue	$ 7	$ 8	$ 23	$ 24
Total revenues	1,346	1,426	4,583	4,535
Net investment income	120	115	360	335
Net realized investment (losses) gains	(292)	(85)	(243)	104
Net impairment losses recognized in earnings	(4)	(1)	(8)	(1)
Equity in earnings of limited partnerships	43	34	143	111
Income (loss) from operations before income taxes and noncontrolling interest	40	150	532	453
Provision for income taxes	7	42	166	133
Net income attributable to Indemnity	50	47	145	142
Indemnity
Income attributable to Indemnity shareholder interest
Net investment income	4	4	13	12
Net realized investment (losses) gains	0	0	0	1
Equity in earnings of limited partnerships	4	4	17	13
Income (loss) from operations before income taxes and noncontrolling interest	75	70	220	214
Provision for income taxes	25	23	75	72
Net income attributable to Indemnity	50	47	145	142
Indemnity | Management operations
Income attributable to Indemnity shareholder interest
Management fee revenue, net	389	362	1,127	1,047
Service agreement revenue	7	8	22	23
Total revenues	396	370	1,149	1,070
Cost of management operations	328	308	958	882
Income (loss) from operations before income taxes and noncontrolling interest	68	62	191	188
Indemnity | Investment operations
Income attributable to Indemnity shareholder interest
Net investment income	4	4	13	12
Net realized investment (losses) gains	0	0	0	1
Net impairment losses recognized in earnings	(1)	0	(1)	0
Equity in earnings of limited partnerships	4	4	17	13
Income (loss) from operations before income taxes and noncontrolling interest	$ 7	$ 8	$ 29	$ 26