Condensed Consolidated Statements of Shareholders Equity (USD $) In Millions	Total	Scenario, Previously Reported	Effect Of New Guidance Adoption On Deferred Policy Acquisition Costs	Common Stock	Common Stock Scenario, Previously Reported	Paid-In Capital	Paid-In Capital Scenario, Previously Reported	Retained Earnings	Retained Earnings Scenario, Previously Reported	Retained Earnings Effect Of New Guidance Adoption On Deferred Policy Acquisition Costs	Accumulated Other Comprehensive Income	Accumulated Other Comprehensive Income Scenario, Previously Reported	Treasury Stock	Treasury Stock Scenario, Previously Reported
Balance at Dec. 31, 2010	$ 5,012	$ 5,032	$ (20)	$ 393	$ 393	$ 1,091	$ 1,091	$ 3,960	$ 3,980	$ (20)	$ 769	$ 769	$ (1,201)	$ (1,201)
Balance (in shares) at Dec. 31, 2010				163	163
Net income	11							11
Other comprehensive income, net	134										134
Dividends declared	(131)							(131)
Stock-based awards exercised and vested	(2)					(5)							3
Stock-based compensation	7					7
Other	4					1							3
Balance at Jun. 30, 2011	5,035			393		1,094		3,840			903		(1,195)
Balance (in shares) at Jun. 30, 2011				163
Balance at Dec. 31, 2011	5,033			393		1,096		3,863			901		(1,220)
Balance (in shares) at Dec. 31, 2011	196			162
Net income	118							118
Other comprehensive income, net	109										109
Dividends declared	(130)							(130)
Stock-based awards exercised and vested	2					1							1
Stock-based compensation	8					8
Other	4					1							3
Balance at Jun. 30, 2012	$ 5,144			$ 393		$ 1,106		$ 3,851			$ 1,010		$ (1,216)
Balance (in shares) at Jun. 30, 2012	197			162