Indemnity Supplemental Information (Details 2) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income attributable to Indemnity shareholder interest
Service agreement revenue	$ 8	$ 8	$ 16	$ 16
Total revenues	1,632	1,598	3,237	3,109
Net investment income	127	111	240	220
Net realized investment (losses) gains	(7)	133	49	189
Net impairment losses recognized in earnings	(2)	0	(4)	0
Equity in earnings of limited partnerships	72	27	100	77
Income (loss) from operations before income taxes and noncontrolling interest	295	147	492	303
Provision for income taxes	98	44	159	91
Net income attributable to Indemnity	56	49	95	95
Indemnity
Income attributable to Indemnity shareholder interest
Net investment income	5	4	9	8
Net realized investment (losses) gains	0	0	0	1
Equity in earnings of limited partnerships	11	3	13	9
Income (loss) from operations before income taxes and noncontrolling interest	86	75	145	144
Provision for income taxes	30	26	50	49
Net income attributable to Indemnity	56	49	95	95
Indemnity | Management operations
Income attributable to Indemnity shareholder interest
Management fee revenue, net	395	366	738	685
Service agreement revenue	7	8	15	15
Total revenues	402	374	753	700
Cost of management operations	332	306	630	574
Income (loss) from operations before income taxes and noncontrolling interest	70	68	123	126
Indemnity | Investment operations
Income attributable to Indemnity shareholder interest
Net investment income	5	4	9	8
Net realized investment (losses) gains	0	0	0	1
Net impairment losses recognized in earnings	0	0	0	0
Equity in earnings of limited partnerships	11	3	13	9
Income (loss) from operations before income taxes and noncontrolling interest	$ 16	$ 7	$ 22	$ 18