Inventories, Net (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Inventories, Net [Abstract]
General and administrative costs included in work-in-process inventories	$ 592,000,000	$ 518,000,000
General and administrative costs incurred and recorded in inventories	2,300,000,000	2,300,000,000	2,400,000,000
General and administrative costs charged to cost of sales from inventories	$ 2,200,000,000	$ 2,400,000,000	$ 2,100,000,000