Derivatives And Other Financial Instruments (Reconciliation Of Activity for Derivative Contracts On Net Basis) (Details) (Level 3 [Member], USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2011		Jun. 30, 2011
Level 3 [Member]
Balance at beginning of period	$ 969		$ 779
Sales - (decrease)	(19)		(37)
Cost of goods sold - (increase)	(6)		(11)
Other (income) expenses, net - (increase)	(13)		(34)
Other comprehensive income - (increase)	(135)		99
Purchases, sales, issuances, and settlements		[1]		[1]
Transfers into and (or) out of Level 3		[1]		[1]
Balance at end of period	796		796
Sales
Cost of goods sold
Other (income) expenses, net - (increase)	$ (14)		$ (36)

[1] * There were no purchases, sales, issuances, or settlements of Level 3 financial instruments. Additionally, there were no transfers of financial instruments into or out of Level 3.