CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY AND NONCONTROLLING INTEREST (USD $) In Millions, unless otherwise specified	Total	Indemnity	Indemnity Total Indemnity shareholders' equity	Indemnity Common stock	Indemnity Common stock Class A	Indemnity Common stock Class B	Indemnity Additional paid-in capital	Indemnity Accumulated other comprehensive income	Indemnity Retained earnings	Indemnity Retained earnings Class A	Indemnity Retained earnings Class B	Indemnity Treasury stock	Exchange Noncontrolling interest in consolidated entity - Exchange
Balance at Dec. 31, 2008							$ 8	$ (136)	$ 1,729			$ (811)	$ 3,967
Increase (decrease) in shareholders' equity
Net income	108								108
Dividends declared - Class A ($2.0975, $1.955 and $1.83 per share, respectively) and Class B ($314.625, $293.25 and $274.50 per share, respectively)									(94)	(94)	0
Cumulative effect of change in accounting principle, net of tax (Note 2)	(101)	(6)						(6)	6
Unrealized (losses) gains, net of tax (Note 19)		75						75
Postretirement plans, net of tax (Note 19)		24						24
Net purchase of treasury stock												(3.0)
Comprehensive income	1,063												856
Balance at Dec. 31, 2009	5,725		902	2	2	0	8	(43)	1,749			(814)	4,823
Increase (decrease) in shareholders' equity
Net income	162								162
Dividends declared - Class A ($2.0975, $1.955 and $1.83 per share, respectively) and Class B ($314.625, $293.25 and $274.50 per share, respectively)									(99)	(99)	0
Unrealized (losses) gains, net of tax (Note 19)		(6)						9
Reclassification of unrealized gain on sale of P&C affiliated subsidiaries, net of tax	(15)							(15)	15
Postretirement plans, net of tax (Note 19)		(4)						(4)
Net purchase of treasury stock												(58.0)
Comprehensive income	766												599
Balance at Dec. 31, 2010	6,334		912	2	2	0	8	(53)	1,827			(872)	5,422
Increase (decrease) in shareholders' equity
Net income	169								169
Dividends declared - Class A ($2.0975, $1.955 and $1.83 per share, respectively) and Class B ($314.625, $293.25 and $274.50 per share, respectively)									(102)	(101)	(1)
Unrealized (losses) gains, net of tax (Note 19)		(11)						(11)
Postretirement plans, net of tax (Note 19)		(41)						(41)
Net purchase of treasury stock												(154.0)
Comprehensive income	207												90
Net realized gains (losses)	8						8
Balance at Dec. 31, 2011	$ 6,293		$ 781	$ 2	$ 2	$ 0	$ 16	$ (105)	$ 1,894			$ (1,026)	$ 5,512