CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Millions, except Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Revenues
Premiums earned	$ 1,047	$ 989	$ 2,077	$ 1,967
Net investment income	113	108	218	212
Net realized investment gains (losses)	39	(213)	188	(88)
Net impairment losses recognized in earnings	0	(4)	0	(6)
Equity in earnings of limited partnerships	38	27	110	30
Other income	8	9	17	17
Total revenues	1,245	916	2,610	2,132
Benefits and expenses
Insurance losses and loss expenses	1,170	737	1,876	1,498
Policy acquisition and underwriting expenses	249	230	496	457
Total benefits and expenses	1,419	967	2,372	1,955
(Loss) income from operations before income taxes and noncontrolling interest	(174)	(51)	238	177
Provision for income taxes	(67)	(20)	71	46
Net (loss) income	(107)	(31)	167	131
Less: Net (loss) income attributable to noncontrolling interest in consolidated entity - Exchange	(159)	(80)	71	35
Net income attributable to Indemnity	52	49	96	96
Class A | Indemnity
Net income attributable to Indemnity per share
Common stock - basic (in dollars per share)	$ 1.05	$ 0.96	$ 1.93	$ 1.87
Common stock - diluted (in dollars per share)	$ 0.94	$ 0.86	$ 1.72	$ 1.68
Weighted average shares outstanding attributable to Indemnity - Basic
Common stock - basic (in shares)	49,250,061	51,013,358	49,518,069	51,099,071
Weighted average shares outstanding attributable to Indemnity - Diluted
Common stock - diluted (in shares)	55,436,976	57,197,603	55,704,984	57,282,684
Dividends declared per share
Common stock (in dollars per share)	$ 0.515	$ 0.48	$ 1.03	$ 0.96
Class B | Indemnity
Net income attributable to Indemnity per share
Common stock - basic (in dollars per share)	$ 158.33	$ 138.21	$ 291.07	$ 271.03
Common stock - diluted (in dollars per share)	$ 158.33	$ 138.21	$ 291.07	$ 271.03
Weighted average shares outstanding attributable to Indemnity - Basic
Common stock - basic (in shares)	2,546	2,546	2,546	2,546
Weighted average shares outstanding attributable to Indemnity - Diluted
Common stock - diluted (in shares)	2,546	2,546	2,546	2,546
Dividends declared per share
Common stock (in dollars per share)	$ 77.25	$ 72.00	$ 154.500	$ 144.000
Indemnity
Revenues
Net investment income	4	9	8	18
Net realized investment gains (losses)	6	(3)	7	2
Net impairment losses recognized in earnings	0	(1)	0	(1)
Benefits and expenses
(Loss) income from operations before income taxes and noncontrolling interest	81	74	148	141
Provision for income taxes	29	25	52	45
Net (loss) income	52	49	96	96
Exchange
Revenues
Net investment income	109	99	210	194
Net realized investment gains (losses)	33	(210)	181	(90)
Net impairment losses recognized in earnings	0	(3)	0	(5)
Benefits and expenses
Net (loss) income			$ 71