CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Millions, except Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Revenues
Premiums earned	$ 1,061	$ 1,005	$ 3,138	$ 2,972
Net investment income	108	110	326	322
Net realized investment (losses) gains	(422)	205	(234)	117
Net impairment losses recognized in earnings	0	0	0	(6)
Equity in earnings of limited partnerships	40	28	150	58
Other income	9	9	26	26
Total revenues	796	1,357	3,406	3,489
Benefits and expenses
Insurance losses and loss expenses	848	710	2,724	2,208
Policy acquisition and underwriting expenses	253	242	749	699
Total benefits and expenses	1,101	952	3,473	2,907
(Loss) income from operations before income taxes and noncontrolling interest	(305)	405	(67)	582
Provision for income taxes	(125)	130	(54)	176
Net (loss) income	(180)	275	(13)	406
Less: Net (loss) income attributable to noncontrolling interest in consolidated entity - Exchange	(227)	221	(156)	256
Net income attributable to Indemnity	47	54	143	150
Class A | Indemnity
Net income attributable to Indemnity per share
Common stock - basic (in dollars per share)	$ 0.97	$ 1.05	$ 2.90	$ 2.92
Common stock - diluted (in dollars per share)	$ 0.87	$ 0.94	$ 2.59	$ 2.62
Weighted average shares outstanding attributable to Indemnity - Basic
Common stock - basic (in shares)	48,503,383	50,499,551	49,176,124	50,897,035
Weighted average shares outstanding attributable to Indemnity - Diluted
Common stock - diluted (in shares)	54,685,021	56,678,321	55,357,762	57,075,805
Dividends declared per share
Common stock (in dollars per share)	$ 0.515	$ 0.48	$ 1.545	$ 1.44
Class B | Indemnity
Net income attributable to Indemnity per share
Common stock - basic (in dollars per share)	$ 146.67	$ 150.87	$ 439.39	$ 421.91
Common stock - diluted (in dollars per share)	$ 146.67	$ 150.87	$ 439.39	$ 421.91
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	$ 231.750	$ 216.000
Indemnity
Revenues
Net investment income	4	10	12	28
Net realized investment (losses) gains	(6)	5	1	7
Net impairment losses recognized in earnings	0	0	0	(1)
Benefits and expenses
(Loss) income from operations before income taxes and noncontrolling interest	67	82	215	223
Provision for income taxes	20	28	72	73
Net (loss) income	$ 47	$ 54	$ 143	$ 150