Derivative Financial Instruments and Hedging Activities (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Other current assets [Member]
Derivatives designated as hedges
Derivative asset designated as hedging instrument	$ 13	$ 11
Derivatives not designated as hedges
Other current assets	22	24
Other long-term assets [Member]
Derivatives designated as hedges
Derivative asset designated as hedging instrument	36	85
Other current liabilities [Member]
Derivatives designated as hedges
Derivative liability designated as hedging instrument	4	4
Derivatives not designated as hedges
Other current liabilities	26	31
Other long-term liabilites [Member]
Derivatives designated as hedges
Derivative liability designated as hedging instrument	76	2
Japanese Yen notes due 2018 [Member] | Non-derivative net investment hedge [Member]
Derivatives, Fair Value [Line Items]
Debt denominated in foreign currency designated as non-derivative net investment hedging instrument	95	116
Designated as Hedging Instrument [Member] | Fair Value Hedging [Member] | Fixed-to-floating interest rate swaps
Derivatives designated as hedges
Derivative, Notional Amount	3,090	1,290
Period of derivatives designated as hedges	3 months to 20 years	6 months to 21 years
Designated as Hedging Instrument [Member] | Fair Value Hedging [Member] | Fixed-to-floating interest rate swaps | Other current assets [Member]
Derivatives designated as hedges
Derivative asset designated as hedging instrument	1	2
Designated as Hedging Instrument [Member] | Fair Value Hedging [Member] | Fixed-to-floating interest rate swaps | Other long-term assets [Member]
Derivatives designated as hedges
Derivative asset designated as hedging instrument	36	85
Designated as Hedging Instrument [Member] | Fair Value Hedging [Member] | Fixed-to-floating interest rate swaps | Other current liabilities [Member]
Derivatives designated as hedges
Derivative liability designated as hedging instrument	0	0
Designated as Hedging Instrument [Member] | Fair Value Hedging [Member] | Fixed-to-floating interest rate swaps | Other long-term liabilites [Member]
Derivatives designated as hedges
Derivative liability designated as hedging instrument	76	0
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Floating-to-fixed interest rate swaps
Derivatives designated as hedges
Derivative, Notional Amount	300	300
Period of derivatives designated as hedges	6 months	1 year
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Floating-to-fixed interest rate swaps | Other current assets [Member]
Derivatives designated as hedges
Derivative asset designated as hedging instrument	0	0
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Floating-to-fixed interest rate swaps | Other long-term assets [Member]
Derivatives designated as hedges
Derivative asset designated as hedging instrument	0	0
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Floating-to-fixed interest rate swaps | Other current liabilities [Member]
Derivatives designated as hedges
Derivative liability designated as hedging instrument	1	0
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Floating-to-fixed interest rate swaps | Other long-term liabilites [Member]
Derivatives designated as hedges
Derivative liability designated as hedging instrument	0	2
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Currency exchange contracts
Derivatives designated as hedges
Derivative, Notional Amount	393	451
Period of derivatives designated as hedges	12 to 36 months	12 to 36 months
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Currency exchange contracts | Other current assets [Member]
Derivatives designated as hedges
Derivative asset designated as hedging instrument	12	9
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Currency exchange contracts | Other long-term assets [Member]
Derivatives designated as hedges
Derivative asset designated as hedging instrument	0	0
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Currency exchange contracts | Other current liabilities [Member]
Derivatives designated as hedges
Derivative liability designated as hedging instrument	3	4
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Currency exchange contracts | Other long-term liabilites [Member]
Derivatives designated as hedges
Derivative liability designated as hedging instrument	0	0
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Commodity contracts
Derivatives designated as hedges
Derivative, Notional Amount	1	17
Period of derivatives designated as hedges	12 months	12 months
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Commodity contracts | Other current assets [Member]
Derivatives designated as hedges
Derivative asset designated as hedging instrument	0	0
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Commodity contracts | Other long-term assets [Member]
Derivatives designated as hedges
Derivative asset designated as hedging instrument	0	0
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Commodity contracts | Other current liabilities [Member]
Derivatives designated as hedges
Derivative liability designated as hedging instrument	0	0
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Commodity contracts | Other long-term liabilites [Member]
Derivatives designated as hedges
Derivative liability designated as hedging instrument	0	0
Not Designated as Hedging Instrument [Member] | Currency exchange contracts
Derivatives designated as hedges
Derivative, Notional Amount	4,277	4,997
Derivatives not designated as hedges
Period of derivatives not designated as hedges	12 months	12 months
Not Designated as Hedging Instrument [Member] | Currency exchange contracts | Other current assets [Member]
Derivatives not designated as hedges
Other current assets	22	23
Not Designated as Hedging Instrument [Member] | Currency exchange contracts | Other current liabilities [Member]
Derivatives not designated as hedges
Other current liabilities	26	31
Not Designated as Hedging Instrument [Member] | Commodity contracts
Derivatives designated as hedges
Derivative, Notional Amount		19
Derivatives not designated as hedges
Period of derivatives not designated as hedges		12 months
Not Designated as Hedging Instrument [Member] | Commodity contracts | Other current assets [Member]
Derivatives not designated as hedges
Other current assets		1
Not Designated as Hedging Instrument [Member] | Commodity contracts | Other current liabilities [Member]
Derivatives not designated as hedges
Other current liabilities		$ 0