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Equity Method Investments and Variable Interest Entities (Narrative) (Details) $ in Millions |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2015 USD ($) | Feb. 29, 2016 | Apr. 30, 2006 | Dec. 31, 2019 USD ($) transporter | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
Nonrecourse Project Finance Debt |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Ownership percentage (in percentage) |  |  |  | 50.00% |  |
Number of heavy equipment transporters | transporter |  |  |  | 91 |  |
Transactions with Related Parties |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Revenue from related parties |  |  |  | $ 684 | $ 721 | $ 133
JKC Joint Venture |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Variable interest entity, ownership percentage |  |  |  | 30.00% |  |
Affinity joint venture (U.K. MFTS project) |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Term of contracted services portion of project (in years) |  | 18 years |  |  |  |
Affinity joint venture (U.K. MFTS project) | Variable Interest Entity, Not Primary Beneficiary |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Nonconsolidated assets |  |  |  | $ 14 | 16 |
Nonconsolidated liabilities |  |  |  | 10 | 8 |
Aspire Defence Limited |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Term of contracted services portion of project (in years) |  |  | 35 years |  |  |
Term of construction portion of project (in years) |  |  | 9 years |  |  |
Aspire Defence Limited | Variable Interest Entity, Not Primary Beneficiary |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Nonconsolidated assets |  |  |  | 67 | 68 |
Nonconsolidated liabilities |  |  |  | 5 | 5 |
JKC joint venture (Ichthys LNG project) | Variable Interest Entity, Not Primary Beneficiary |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Nonconsolidated assets |  |  |  | 546 | 427 |
Nonconsolidated liabilities |  |  |  | $ 29 | 32 |
U.K. Road project joint ventures |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Variable interest entity, ownership percentage |  |  |  | 25.00% |  |
U.K. Road project joint ventures | Variable Interest Entity, Not Primary Beneficiary |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Nonconsolidated assets |  |  |  | $ 40 | 37 |
Nonconsolidated liabilities |  |  |  | $ 21 | 10 |
Middle East Petroleum Corporation (EBIC Ammonia project) | Parent Company |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Ownership percentage the enterprise has in a development company that has a minority interest in a VIE |  |  |  | 65.00% |  |
Middle East Petroleum Corporation (EBIC Ammonia project) | Variable Interest Entity, Not Primary Beneficiary |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Nonconsolidated assets |  |  |  | $ 47 | 51 |
Nonconsolidated liabilities |  |  |  | $ 1 | $ 1 |
KJV-G joint venture (Gorgon LNG project) |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Variable interest entity, ownership percentage |  |  |  | 30.00% |  |
Fasttrax Limited (Fasttrax project) |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Variable interest entity, ownership percentage |  |  |  | 50.00% |  |
Percentage of subsidiary owned by the parent entity |  |  |  | 100.00% |  |
Cash collateral for borrowed securities |  |  |  | $ 18 |  |
Property plant and equipment collateral for borrowed securities |  |  |  | $ 23 |  |
Brown & Root JV |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Ownership percentage (in percentage) | 50.00% |  |  |  |  |
Affinity Flying Training Services Limited |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Variable interest entity, ownership percentage |  |  |  | 50.00% |  |
Affinity Capital Works |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Variable interest entity, ownership percentage |  |  |  | 50.00% |  |
Aspire Defence Limited |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Variable interest entity, ownership percentage |  |  |  | 45.00% |  | 50.00%
Development Corporation | Middle East Petroleum Corporation (EBIC Ammonia project) |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Development company's ownership interest in a company that consolidates a VIE |  |  |  | 25.00% |  |
Industrial Services Business |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Proceeds from divestiture of businesses | $ 48 |  |  |  |  |

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