Consolidated Statements of Shareholders' Equity (USD $) In Millions, unless otherwise specified	Total	Common Stock	Common Stock Surplus	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income (Loss)
Balance, at Dec. 31, 2009	$ 12,423	$ 482	$ 1,518	$ 15,093	$ (3,463)	$ (1,207)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	2,624			2,624
Cash dividends declared	(641)			(641)
Stock-based awards	402		211		191
Shares purchased	(1,263)				(1,263)
Net gain (loss) on cash flow hedges	(229)					(229)
Balance, at Dec. 31, 2010	13,316	482	1,729	17,076	(4,535)	(1,436)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	2,526			2,526
Cash dividends declared	(685)			(685)
Stock-based awards	340		159		181
Shares purchased	(1,389)				(1,389)
Net gain (loss) on cash flow hedges	(876)					(876)
Balance, at Dec. 31, 2011	13,232	482	1,888	18,917	(5,743)	(2,312)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	(332)			(332)
Cash dividends declared	(725)			(725)
Stock-based awards	280		100		180
Shares purchased	(602)				(602)
Net gain (loss) on cash flow hedges	(463)					(463)
Balance, at Dec. 31, 2012	$ 11,390	$ 482	$ 1,988	$ 17,860	$ (6,165)	$ (2,775)