Financial Instruments Energy (Details) (USD $) In Millions, unless otherwise specified																							3 Months Ended	9 Months Ended		3 Months Ended		9 Months Ended																		3 Months Ended		9 Months Ended
	Sep. 30, 2014 Not Designated as Hedging Instrument [Member] Accrued expenses and other liabilities [Member]		Dec. 31, 2013 Not Designated as Hedging Instrument [Member] Accrued expenses and other liabilities [Member]		Sep. 30, 2014 Foreign exchange contracts Not Designated as Hedging Instrument [Member] Accrued expenses and other liabilities [Member]		Dec. 31, 2013 Foreign exchange contracts Not Designated as Hedging Instrument [Member] Accrued expenses and other liabilities [Member]		Sep. 30, 2014 Credit contracts Not Designated as Hedging Instrument [Member] Accrued expenses and other liabilities [Member]		Dec. 31, 2013 Credit contracts Not Designated as Hedging Instrument [Member] Accrued expenses and other liabilities [Member]		Sep. 30, 2014 Commodity contracts Not Designated as Hedging Instrument [Member] Accrued expenses and other liabilities [Member]		Dec. 31, 2013 Commodity contracts Not Designated as Hedging Instrument [Member] Accrued expenses and other liabilities [Member]		Sep. 30, 2014 Energy Segment [Member] Commodity contracts Not Designated as Hedging Instrument [Member] Accrued expenses and other liabilities [Member]	Dec. 31, 2013 Energy Segment [Member] Commodity contracts Not Designated as Hedging Instrument [Member] Accrued expenses and other liabilities [Member]	Sep. 30, 2014 Swap [Member] Energy Segment [Member] Commodity contracts Not Designated as Hedging Instrument [Member] bbl	Dec. 31, 2013 Swap [Member] Energy Segment [Member] Commodity contracts Not Designated as Hedging Instrument [Member] bbl	Sep. 30, 2014 Swap [Member] Energy Segment [Member] Commodity contracts Not Designated as Hedging Instrument [Member] Accrued expenses and other liabilities [Member]	Dec. 31, 2013 Swap [Member] Energy Segment [Member] Commodity contracts Not Designated as Hedging Instrument [Member] Accrued expenses and other liabilities [Member]	Sep. 30, 2013 Other income (loss), net [Member] Energy Segment [Member] Commodity contracts Not Designated as Hedging Instrument [Member]	Sep. 30, 2014 Other income (loss), net [Member] Energy Segment [Member] Commodity contracts Not Designated as Hedging Instrument [Member]	Sep. 30, 2013 Other income (loss), net [Member] Energy Segment [Member] Commodity contracts Not Designated as Hedging Instrument [Member]	Sep. 30, 2014 Other income (loss), net [Member] Swap [Member] Energy Segment [Member] Commodity contracts Not Designated as Hedging Instrument [Member]	Sep. 30, 2013 Other income (loss), net [Member] Swap [Member] Energy Segment [Member] Commodity contracts Not Designated as Hedging Instrument [Member]	Sep. 30, 2014 Other income (loss), net [Member] Swap [Member] Energy Segment [Member] Commodity contracts Not Designated as Hedging Instrument [Member]	Sep. 30, 2013 Other income (loss), net [Member] Swap [Member] Energy Segment [Member] Commodity contracts Not Designated as Hedging Instrument [Member]	Sep. 30, 2014 Cash Flow Hedging [Member] Designated as Hedging Instrument [Member] Accrued expenses and other liabilities [Member]		Dec. 31, 2013 Cash Flow Hedging [Member] Designated as Hedging Instrument [Member] Accrued expenses and other liabilities [Member]		Sep. 30, 2014 Cash Flow Hedging [Member] Foreign exchange contracts Designated as Hedging Instrument [Member] Accrued expenses and other liabilities [Member]		Dec. 31, 2013 Cash Flow Hedging [Member] Foreign exchange contracts Designated as Hedging Instrument [Member] Accrued expenses and other liabilities [Member]		Sep. 30, 2014 Cash Flow Hedging [Member] Commodity contracts Designated as Hedging Instrument [Member] Accrued expenses and other liabilities [Member]		Dec. 31, 2013 Cash Flow Hedging [Member] Commodity contracts Designated as Hedging Instrument [Member] Accrued expenses and other liabilities [Member]		Sep. 30, 2014 Cash Flow Hedging [Member] Interest rate swap contracts Designated as Hedging Instrument [Member] Accrued expenses and other liabilities [Member]		Dec. 31, 2013 Cash Flow Hedging [Member] Interest rate swap contracts Designated as Hedging Instrument [Member] Accrued expenses and other liabilities [Member]		Sep. 30, 2014 Cash Flow Hedging [Member] Energy Segment [Member] Interest rate swap contracts Designated as Hedging Instrument [Member]	Sep. 30, 2013 Cash Flow Hedging [Member] Energy Segment [Member] Interest rate swap contracts Designated as Hedging Instrument [Member]	Sep. 30, 2014 Cash Flow Hedging [Member] Energy Segment [Member] Interest rate swap contracts Designated as Hedging Instrument [Member]	Sep. 30, 2013 Cash Flow Hedging [Member] Energy Segment [Member] Interest rate swap contracts Designated as Hedging Instrument [Member]	Jul. 02, 2012 Cash Flow Hedging [Member] Energy Segment [Member] Interest rate swap contracts Designated as Hedging Instrument [Member]	Sep. 30, 2014 Debt Facility [Member] Term Loan [Member] Energy Segment [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives, Gross	$ 106	[1]	$ 687	[1]	$ 0	[1]	$ 0	[1]	$ 2	[1]	$ 0	[1]	$ 0	[1]	$ 33	[1]														$ 2	[2]	$ 5	[2]	$ 0	[2]	$ 1	[2]	$ 1	[2]	$ 2	[2]	$ 1	[2]	$ 2	[2]
Derivative contract at fair value (liability)																	0	1			62	16
Realized loss on commodity derivatives																							1	(1)	(2)	26	72	171	175
Barrels of crack spreads hedging margin on future gasoline and distillate production																			9,800,000	23,300,000
Balance of debt partially hedged																																																			125
Notional value of interest rate swap agreements																																														63		63
Lower fixed interest rate paid on interest rate swaps																																														1.94%		1.94%		1.975%
Frequency of interest rate swap settlements																																																90 days
Average fixed interest rate paid on interest rate swaps																																														1.96%		1.96%
Effective interest rate on debt hedged																																																			4.60%
Realized loss on interest rate swaps reclassified from AOCI into interest expense																																														$ 1	$ (1)	$ (1)	$ (1)

[1] Net liability derivatives are located within accrued expenses and other liabilities in our consolidated balance sheets.

[2] Located within accrued expenses and other liabilities in our consolidated balance sheets.