Condensed Consolidated Statements Of Stockholders' Equity (USD $) In Millions	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]	Noncontrolling Interest [Member]
Balances, at Dec. 31, 2011	$ 3,683	$ 935	$ 5,674	$ 23,583	$ (1,887)	$ (24,625)	$ 3
Net Earnings	4,180	0	0	4,180	0	0	0
Other comprehensive earnings (losses), net of deferred income taxes (benefit)	(153)	0	0	0	(153)	0	0
Stock Award Activity	24	0	14	0	0	10	0
Cash dividends declared	(3,447)	0	0	(3,447)	0	0	0
Repurchases of common stock	(1,116)	0	0	0	0	(1,116)	0
Other	(1)	0	0	0	0	0	(1)
Balances, at Dec. 31, 2012	3,170	935	5,688	24,316	(2,040)	(25,731)	2
Net Earnings	1,384	0	0	1,385	0	0	(1)
Other comprehensive earnings (losses), net of deferred income taxes (benefit)	(28)	0	0	0	(28)	0	0
Stock Award Activity	(15)	0	(32)	0	0	17	0
Cash dividends declared	(884)	0	0	(884)	0	0	0
Repurchases of common stock	(57)	0	0	0	0	(57)	0
Balances, at Mar. 31, 2013	$ 3,570	$ 935	$ 5,656	$ 24,817	$ (2,068)	$ (25,771)	$ 1