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Financial Instruments Energy (Details) bbl in Millions, $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2015 USD ($) bbl | Dec. 31, 2014 USD ($) bbl | Dec. 31, 2013 USD ($) | Jul. 01, 2011 | Jun. 30, 2011
Not Designated as Hedging Instrument [Member] | Other Assets [Member] |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Asset Derivatives, Gross | [1] | $ 430 | $ 60 |  |  |
Not Designated as Hedging Instrument [Member] | Accrued Expenses and Other Liabilities [Member] |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Liability Derivatives, Gross | [2] | 204 | 637 |  |  |
Equity contracts | Not Designated as Hedging Instrument [Member] | Other Assets [Member] |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Asset Derivatives, Gross | [1] | 339 | 0 |  |  |
Equity contracts | Not Designated as Hedging Instrument [Member] | Accrued Expenses and Other Liabilities [Member] |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Liability Derivatives, Gross | [2] | 122 | 552 |  |  |
Foreign exchange contracts | Not Designated as Hedging Instrument [Member] | Other Assets [Member] |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Asset Derivatives, Gross | [1] | 0 | 11 |  |  |
Foreign exchange contracts | Not Designated as Hedging Instrument [Member] | Accrued Expenses and Other Liabilities [Member] |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Liability Derivatives, Gross | [2] | 19 | 0 |  |  |
Credit contracts | Not Designated as Hedging Instrument [Member] | Other Assets [Member] |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Asset Derivatives, Gross | [1] | 45 | 1 |  |  |
Credit contracts | Not Designated as Hedging Instrument [Member] | Accrued Expenses and Other Liabilities [Member] |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Liability Derivatives, Gross | [2] | 53 | 85 |  |  |
Interest rate contracts | Not Designated as Hedging Instrument [Member] | Other Assets [Member] |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Asset Derivatives, Gross | [1] | 0 | 1 |  |  |
Interest rate contracts | Not Designated as Hedging Instrument [Member] | Accrued Expenses and Other Liabilities [Member] |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Liability Derivatives, Gross | [2] | 0 | 0 |  |  |
Commodity contracts | Not Designated as Hedging Instrument [Member] | Accrued Expenses and Other Liabilities [Member] |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Fair value of open commodity positions, net liability | [2] | 10 | $ 0 |  |  |
Interest rate contracts(2) |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative, Notional Amount |  | $ 16,000 |  |  |  |
Swap [Member] | Energy Segment [Member] | Commodity contracts | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Barrels of crack spreads hedging margin on future gasoline and distillate production | bbl |  | 2.5 | 9.1 |  |  |
Other Income (Loss) [Member] | Swap [Member] | Energy Segment [Member] | Commodity contracts | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Fair value of open commodity positions, net liability |  | $ 45 | $ 47 |  |  |
Realized loss on commodity derivatives |  | (36) | $ 187 | $ 60 |  |
Cash Flow Hedging [Member] | Energy Segment [Member] | Interest rate contracts(2) | Designated as Hedging Instrument [Member] |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative, Notional Amount |  | $ 63 |  |  |  |
Lower fixed interest rate paid on interest rate swaps |  |  |  |  | 1.975% | 1.94%
Frequency of interest rate swap settlements |  | 90 days |  |  |  |
Average fixed interest rate paid on interest rate swaps |  | 1.96% |  |  |  |
Realized loss on interest rate swaps reclassified from AOCI into interest expense |  | $ 1 |  |  |  |
Debt Facility [Member] | Term Loan [Member] | Energy Segment [Member] |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Balance of debt partially hedged |  | $ 125 |  |  |  |
[1] | Net asset derivatives are located within other assets in our consolidated balance sheets.
[2] | Net liability derivatives are located within accrued expenses and other liabilities in our consolidated balance sheets.

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