Fair Value Measurements and Financial Instruments (Details 1) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Designated derivative instruments
Derivative assets, designated	$ 117	$ 138
Derivative liabilities, designated	30	5
Derivatives not designated
Derivative assets not designated	16	13
Derivative liabilities not designated	0	0
Total derivative instruments, Assets	133	151
Total derivative instruments, Liabilities	30	5
Other financial instruments
Total other financial instruments	87	61
Other current assets
Other financial instruments
Marketable securities	87	61
Other current assets | Interest rate swap contracts
Designated derivative instruments
Derivative assets, designated	0	0
Other current assets | Foreign currency contracts
Designated derivative instruments
Derivative assets, designated	103	131
Other current assets | Commodity contracts
Designated derivative instruments
Derivative assets, designated	0	0
Other assets | Interest rate swap contracts
Designated derivative instruments
Derivative assets, designated	14	7
Other assets | Foreign currency contracts
Designated derivative instruments
Derivative assets, designated	0	0
Derivatives not designated
Derivative assets not designated	16	13
Other accruals | Interest rate swap contracts
Designated derivative instruments
Derivative liabilities, designated	0	0
Other accruals | Foreign currency contracts
Designated derivative instruments
Derivative liabilities, designated	30	5
Other accruals | Commodity contracts
Designated derivative instruments
Derivative liabilities, designated	0	0
Other liabilities | Interest rate swap contracts
Designated derivative instruments
Derivative liabilities, designated	0	0
Other liabilities | Foreign currency contracts
Designated derivative instruments
Derivative liabilities, designated	0	0
Derivatives not designated
Derivative liabilities not designated	$ 0	$ 0