Fair Value Measurements and Financial Instruments (Details 1) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Designated Derivative Instruments [Abstract]
Derivative assets, designated	$ 36	$ 138
Derivative liabilities, designated	4	5
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivative assets not designated	0	13
Derivative liabilities not designated	0	0
Total derivative instruments, Assets	36	151
Total derivative instruments, Liabilities	4	5
Financial Instruments, Owned, at Fair Value [Abstract]
Total other financial instruments	23	61
Other Current Assets
Financial Instruments, Owned, at Fair Value [Abstract]
Marketable securities	23	61
Other Current Assets | Foreign Government Debt Securities
Financial Instruments, Owned, at Fair Value [Abstract]
Marketable securities	48
Interest Rate Swap Contracts | Other Current Assets
Designated Derivative Instruments [Abstract]
Derivative assets, designated	1	0
Interest Rate Swap Contracts | Other Accruals
Designated Derivative Instruments [Abstract]
Derivative liabilities, designated	0	0
Interest Rate Swap Contracts | Other Assets
Designated Derivative Instruments [Abstract]
Derivative assets, designated	1	7
Interest Rate Swap Contracts | Other Liabilities
Designated Derivative Instruments [Abstract]
Derivative liabilities, designated	0	0
Foreign Currency Contracts | Other Current Assets
Designated Derivative Instruments [Abstract]
Derivative assets, designated	29	131
Foreign Currency Contracts | Other Accruals
Designated Derivative Instruments [Abstract]
Derivative liabilities, designated	4	5
Foreign Currency Contracts | Other Assets
Designated Derivative Instruments [Abstract]
Derivative assets, designated	5	0
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivative assets not designated	0	13
Foreign Currency Contracts | Other Liabilities
Designated Derivative Instruments [Abstract]
Derivative liabilities, designated	0	0
Derivative Instruments Not Designated as Hedging Instruments [Abstract]
Derivative liabilities not designated	0	0
Commodity Contracts | Other Current Assets
Designated Derivative Instruments [Abstract]
Derivative assets, designated	0	0
Commodity Contracts | Other Accruals
Designated Derivative Instruments [Abstract]
Derivative liabilities, designated	$ 0	$ 0