Derivatives And Hedging Activities (Footnotes and Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended					12 Months Ended													12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Designated as Hedging Instrument [Member]	Dec. 31, 2011 Designated as Hedging Instrument [Member]	Dec. 31, 2012 Floating To Fixed Interest Rate Swap [Member]	Dec. 31, 2010 Interest Rate Swap [Member]	Sep. 30, 2011 Fixed To Floating Interest Rate Swap Member Long-term Debt [Member]	Dec. 31, 2012 Foreign Exchange Contract [Member] Cash Flow Hedging [Member]	Dec. 31, 2012 Cash Flow Hedging [Member] Foreign Exchange Contract [Member] Designated as Hedging Instrument [Member]		Dec. 31, 2011 Cash Flow Hedging [Member] Foreign Exchange Contract [Member] Designated as Hedging Instrument [Member]		Dec. 31, 2012 Cash Flow Hedging [Member] Foreign Exchange Contract [Member] Designated as Hedging Instrument [Member] Other Current Assets [Member]	Dec. 31, 2012 Cash Flow Hedging [Member] Foreign Exchange Contract [Member] Designated as Hedging Instrument [Member] Deferred Charges and Other Assets [Member]	Dec. 31, 2012 Cash Flow Hedging [Member] Foreign Exchange Contract [Member] Designated as Hedging Instrument [Member] Other Accrued Liabilities [Member]	Dec. 31, 2011 Cash Flow Hedging [Member] Foreign Exchange Contract [Member] Designated as Hedging Instrument [Member] Other Accrued Liabilities [Member]	Dec. 31, 2012 Cash Flow Hedging [Member] Foreign Exchange Contract [Member] Designated as Hedging Instrument [Member] Other Liabilities [Member]	Dec. 31, 2011 Cash Flow Hedging [Member] Foreign Exchange Contract [Member] Designated as Hedging Instrument [Member] Other Liabilities [Member]	Dec. 31, 2011 Restructuring And Other Charges [Member] Not Designated as Hedging Instrument [Member] Foreign Exchange Contract [Member]	Sep. 30, 2010 Not Designated as Hedging Instrument [Member] Fixed To Floating Interest Rate Swap Member	Sep. 30, 2010 Not Designated as Hedging Instrument [Member] Floating To Fixed Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Maturity period of hedges, maximum (in years)								3 years
Floating-to-fixed interest rate swap notional to offset the embedded derivative					$ 150
AOCI balance, after tax, that is expected to be reclassified to earnings	9
Additions and adjustments																			5
Notional Amount of Interest Rate Derivatives																				1,000	1,000
Unamortized gain (loss) on interest rate swap unwinds							27
Derivative assets	9	6	7	0					7	[1]	0		3	4
Derivative liabilities	23	68	21	63					21	[2]	53	[3]			20	32	1	21
Gain due to changes in fair value						22
Collateral threshold based on company's current credit rating	10
Interest rate swap notional	$ 18	$ 67

[1] Includes $3 million recorded in Other current assets and $4 million recorded in Deferred charges and other assets in the accompanying consolidated balance sheet.

[2] Includes $20 million recorded in Other accrued liabilities and $1 million recorded in Other liabilities in the accompanying consolidated balance sheet.

[3] Includes $32 million recorded in Other accrued liabilities and $21 million recorded in Other liabilities in the accompanying consolidated balance sheet.