Derivatives and Hedging Activities Derivatives and Hedging Activities (Impact of Derivative Instruments in Consolidated Balance Sheet) (Parenthetical) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Derivatives, Fair Value [Line Items]
Derivative assets	$ 39	$ 9
Derivative liabilities	34	23
Other Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities	24	20
Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities	9	1
Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	23	3
Deferred charges and other assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	14	4
Energy Related Derivative [Member] | Other Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities		1
Energy Related Derivative [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets	2
Embedded Derivative [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets		1
Foreign Exchange Forward [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets		1
Interest Rate Swap [Member] | Other Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities		1
Interest Rate Swap [Member] | Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities	$ 1