Consolidated Statements Of Stockholders' Equity (USD $) In Millions	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Comprehensive Income (Loss) [Member]	Total
Balance at Dec. 31, 2007
Cumulative effect of a change in accounting principle (see Note 1) (Cumulative Effect Of A Change In Accounting Principle [Member])			$ (112)			$ (112)
Balance at Dec. 31, 2008 (Scenario, Previously Reported [Member])	393		11,621	(9,149)		2,865
Balance (As Adjusted [Member])	393		11,509	(9,149)		2,753
Net earnings			2,973		2,973	2,973
Repurchases of common stock	(25)	(440)	(1,386)			(1,851)
Common stock dividends declared			(908)			(908)
Stock-based awards and ESOP activity	5	440				445
Unrecognized amounts, net of tax				214	214	214
Recognition of previously deferred amounts, net of tax				281	281	281
Other, net				59	59	59
Balance at Dec. 31, 2009	373		12,188	(8,595)	3,527	3,966
Cumulative effect of a change in accounting principle (see Note 1)						(211)
Net earnings			2,878		2,878	2,878
Repurchases of common stock	(33)	(514)	(1,936)			(2,483)
Common stock dividends declared			(969)			(969)
Stock-based awards and ESOP activity	6	514				520
Unrecognized amounts, net of tax				(983)	(983)	(983)
Recognition of previously deferred amounts, net of tax				553	553	553
Other, net				15	15	15
Balance at Dec. 31, 2010	346		12,161	(9,010)	2,463	3,497
Net earnings			2,655		2,655	2,655
Repurchases of common stock	(32)	(589)	(1,781)			(2,402)
Common stock dividends declared			(1,098)			(1,098)
Stock-based awards and ESOP activity	7	589				596
Unrecognized amounts, net of tax				(2,858)	(2,858)	(2,858)
Recognition of previously deferred amounts, net of tax				666	666	666
Other, net				(55)	(55)	(55)
Balance at Dec. 31, 2011	$ 321		$ 11,937	$ (11,257)	$ 408	$ 1,001