Shareholders' Equity (Tables)

6 Months Ended

Jun. 30, 2011

Shareholders' equity [Abstract]

Accumulated other comprehensive income (loss), net of tax

							Pension and
	Pretax			Foreign			Other									Accumulated
	Net Unrealized			Currency			Postretirement						Noncon-			Other
	Gains (Losses)			Translation			Plans			Tax			trolling			Comprehensive
	on Securities			Adjustment			Adjustment			Effects			Interests			Income (Loss)
Balance at December 31, 2010	$	736	(a)	$	9		$	(13	)	$	(253	)	$	—		$	479	(a)
Unrealized holding gains on securities arising during the period		179			—			—			(63	)		(3	)		113
Realized gains included in net income		(30	)		—			—			10			1			(19	)
Foreign currency translation gains		—			5			—			—			—			5
Other		—			—			1			—			—			1
Balance at June 30, 2011	$	885	(a)	$	14		$	(12	)	$	(306	)	$	(2	)	$	579	(a)
Balance at December 31, 2009	$	258		$	1		$	(13	)	$	(86	)	$	3		$	163
Unrealized holding gains on securities arising during the period		405			—			—			(142	)		(3	)		260
Realized gains included in net income		(32	)		—			—			11			1			(20	)
Foreign currency translation losses		—			(1	)		—			—			—			(1	)
Other		(6	)		—			1			1			—			(4	)
Balance at June 30, 2010	$	625		$	—		$	(12	)	$	(216	)	$	1		$	398

(a) Includes a net pretax unrealized gain of $1 million at June 30, 2011 compared to a net pretax unrealized loss of $17 million at December 31, 2010 ($11 million net of tax) related to securities for which only the credit portion of an other-than-temporary impairment has been recorded in earnings.