Objectives And Strategies For Using Derivatives (Schedule Of Fair Value Of Derivative Instruments By Balance Sheet Location) (Details) (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Assets	$ 100	$ 70
Liabilities	64	48
Asset derivatives designated as hedging instruments	27	29
Liability derivatives designated as hedging instruments	56	28
Interest Rate Contracts [Member]
Assets	25	24
Liabilities	6	2
Interest Rate Contracts [Member] | Other Current Assets [Member]
Asset derivatives designated as hedging instruments	7
Interest Rate Contracts [Member] | Other Assets [Member]
Asset derivatives designated as hedging instruments	18	24
Interest Rate Contracts [Member] | Other Liabilities [Member]
Liability derivatives designated as hedging instruments	6	2
Foreign Exchange Contracts [Member]
Assets	75	46
Liabilities	54	39
Foreign Exchange Contracts [Member] | Other Current Assets [Member]
Asset derivatives designated as hedging instruments	2	4
Asset derivatives not designated as hedging instruments	73	41
Foreign Exchange Contracts [Member] | Other Assets [Member]
Asset derivatives designated as hedging instruments		1
Foreign Exchange Contracts [Member] | Accrued Expenses [Member]
Liability derivatives designated as hedging instruments	40	16
Foreign Exchange Contracts [Member] | Other Liabilities [Member]
Liability derivatives designated as hedging instruments	6	3
Commodity Contracts [Member]
Liabilities	4	7
Commodity Contracts [Member] | Accrued Expenses [Member]
Liability derivatives designated as hedging instruments	4	7
Foreign Exchange Contracts And Other [Member] | Accrued Expenses [Member]
Liability derivatives not designated as hedging instruments	$ 8	$ 20