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Equity Method Investments And Variable Interest Entities (Schedule Of Variable Interest Entities) (Details) - USD ($) $ in Millions | Jun. 30, 2015 | Dec. 31, 2014
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Variable Interest Entity, Not Primary Beneficiary [Member] | Aspire Defence Project [Member] |  |
Schedule of Equity Method Investments [Line Items] |  |
Unconsolidated VIEs, Total assets | $ 17 | $ 17
Unconsolidated VIEs, Total liabilities | 125 | 118
Maximum exposure to loss | 17 |
Variable Interest Entity, Not Primary Beneficiary [Member] | U.K. Road Projects [Member] |  |
Schedule of Equity Method Investments [Line Items] |  |
Unconsolidated VIEs, Total assets | 37 | 34
Unconsolidated VIEs, Total liabilities | 11 | 11
Maximum exposure to loss | 37 |
Variable Interest Entity, Not Primary Beneficiary [Member] | Ichthys LNG Project [Member] |  |
Schedule of Equity Method Investments [Line Items] |  |
Unconsolidated VIEs, Total assets | 51 | 49
Unconsolidated VIEs, Total liabilities | 45 | 35
Maximum exposure to loss | 51 |
Variable Interest Entity, Not Primary Beneficiary [Member] | EBIC Ammonia Project [Member] |  |
Schedule of Equity Method Investments [Line Items] |  |
Unconsolidated VIEs, Total assets | 38 | 42
Unconsolidated VIEs, Total liabilities | 2 | 2
Maximum exposure to loss | 24 |
Variable Interest Entity, Primary Beneficiary [Member] | Fasttrax Limited Project [Member] |  |
Schedule of Equity Method Investments [Line Items] |  |
Consolidated VIEs, Total assets | 80 | 83
Consolidated VIEs, Total liabilities | 77 | 81
Variable Interest Entity, Primary Beneficiary [Member] | Escravos Gas-To-Liquids Project [Member] |  |
Schedule of Equity Method Investments [Line Items] |  |
Consolidated VIEs, Total assets | 18 | 23
Consolidated VIEs, Total liabilities | 35 | 36
Variable Interest Entity, Primary Beneficiary [Member] | Gorgon LNG Project [Member] |  |
Schedule of Equity Method Investments [Line Items] |  |
Consolidated VIEs, Total assets | 245 | 282
Consolidated VIEs, Total liabilities | $ 266 | $ 309

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