Indemnity Supplemental Information (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Income attributable to Indemnity shareholder interest
Service agreement revenue	$ 8	$ 8
Total revenues	1,511	1,571
Net investment income	109	103
Net realized gains on investments	56	249
Net impairment losses recognized in earnings	0	0
Equity in earnings of limited partnerships	50	36
Income (loss) from operations before income taxes and noncontrolling interest	156	436
Provision for income taxes	47	146
Net income attributable to Indemnity	46	37
Indemnity
Income attributable to Indemnity shareholder interest
Net investment income	4	4
Net realized gains on investments	1	0
Equity in earnings of limited partnerships	6	3
Income (loss) from operations before income taxes and noncontrolling interest	69	56
Provision for income taxes	23	19
Net income attributable to Indemnity	46	37
Indemnity | Management operations
Income attributable to Indemnity shareholder interest
Management fee revenue, net	319	296
Service agreement revenue	7	7
Total revenues	326	303
Cost of management operations	268	254
Income (loss) from operations before income taxes and noncontrolling interest	58	49
Indemnity | Investment operations
Income attributable to Indemnity shareholder interest
Net investment income	4	4
Net realized gains on investments	1	0
Net impairment losses recognized in earnings	0	0
Equity in earnings of limited partnerships	6	3
Income (loss) from operations before income taxes and noncontrolling interest	$ 11	$ 7