Derivatives and Hedging Activities (Impact Of Derivative Instruments In Consolidated Balance Sheet) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013
Derivatives, Fair Value [Line Items]
Derivative Liabilities	$ 18		$ 34
Derivative Assets	17		39
Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities	14		34
Derivative Assets	16		37
Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities	4		0
Derivative Assets	1		2
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities	2	[1]	0
Derivative Assets	1	[2]	0
Energy Related Derivative [Member] | Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities	2	[1]	0
Derivative Assets	0		2	[2]
Cash Flow Hedging [Member] | Foreign Exchange Forward [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities	14	[1]	33	[3]
Derivative Assets	16	[4]	37	[5]
Fair Value Hedging [Member] | Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities	0		1	[6]
Derivative Assets	$ 0		$ 0

[1] Included in Other accrued liabilities in the accompanying consolidated balance sheet.

[2] Included in Other current assets in the accompanying consolidated balance sheet.

[3] Includes $24 million recorded in Other accrued liabilities and $9 million recorded in Other liabilities in the accompanying consolidated balance sheet.

[4] Includes $14 million recorded in Other current assets and $2 million recorded in Deferred charges and other assets in the accompanying consolidated balance sheet.

[5] Includes $23 million recorded in Other current assets and $14 million recorded in Deferred charges and other assets in the accompanying consolidated balance sheet.

[6] Included in Other liabilities in the accompanying consolidated balance sheet.