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Financial Instruments and Risk Management - Fair Value (Details) - USD ($) $ in Millions | Mar. 31, 2020 | Dec. 31, 2019
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Fair Value Measurements |  |
Total current derivative contracts, assets | $ 101 | $ 57
Total noncurrent derivative contracts, assets | 78 | 16
Total current derivative contracts, liabilities | 159 | 64
Total noncurrent derivative contracts, liabilities | 10 | 1
Commodity contracts |  |
Fair Value Measurements |  |
Total current derivative contracts, assets | 70 | 8
Total current derivative contracts, liabilities | 104 | 27
Total noncurrent derivative contracts, liabilities | 9 | 1
Foreign currency contracts |  |
Fair Value Measurements |  |
Total current derivative contracts, assets | 12 | 47
Total noncurrent derivative contracts, assets | 78 | 15
Total current derivative contracts, liabilities | 42 | 18
Total noncurrent derivative contracts, liabilities | 1 |
Other contracts |  |
Fair Value Measurements |  |
Total current derivative contracts, assets | 19 | 2
Total noncurrent derivative contracts, assets |  | 1
Total current derivative contracts, liabilities | 13 | 19
Derivatives Designated As Hedging Instruments |  |
Fair Value Measurements |  |
Total current derivative contracts, assets | 60 | 13
Total noncurrent derivative contracts, assets | 76 | 16
Total current derivative contracts, liabilities | 106 | 26
Total noncurrent derivative contracts, liabilities | 9 | 1
Derivatives Designated As Hedging Instruments | Commodity contracts |  |
Fair Value Measurements |  |
Total current derivative contracts, assets | 60 | 7
Total current derivative contracts, liabilities | 100 | 26
Total noncurrent derivative contracts, liabilities | 9 | 1
Derivatives Designated As Hedging Instruments | Foreign currency contracts |  |
Fair Value Measurements |  |
Total current derivative contracts, assets |  | 4
Total noncurrent derivative contracts, assets | 76 | 15
Total current derivative contracts, liabilities | 5 |
Derivatives Designated As Hedging Instruments | Other contracts |  |
Fair Value Measurements |  |
Total current derivative contracts, assets |  | 2
Total noncurrent derivative contracts, assets |  | 1
Total current derivative contracts, liabilities | 1 |
Derivatives Not Designated as Hedging Instruments |  |
Fair Value Measurements |  |
Total current derivative contracts, assets | 41 | 44
Total noncurrent derivative contracts, assets | 2 |
Total current derivative contracts, liabilities | 53 | 38
Total noncurrent derivative contracts, liabilities | 1 |
Derivatives Not Designated as Hedging Instruments | Commodity contracts |  |
Fair Value Measurements |  |
Total current derivative contracts, assets | 10 | 1
Total current derivative contracts, liabilities | 4 | 1
Derivatives Not Designated as Hedging Instruments | Foreign currency contracts |  |
Fair Value Measurements |  |
Total current derivative contracts, assets | 12 | 43
Total noncurrent derivative contracts, assets | 2 |
Total current derivative contracts, liabilities | 37 | 18
Total noncurrent derivative contracts, liabilities | 1 |
Derivatives Not Designated as Hedging Instruments | Other contracts |  |
Fair Value Measurements |  |
Total current derivative contracts, assets | 19 |
Total current derivative contracts, liabilities | $ 12 | $ 19

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- Definition Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 + Details
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