Investment in unconsolidated affiliate related amortization.

No definition available.

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- Definition

Number of liquefied natural gas.

+ References

No definition available.

+ Details

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- Definition

Number of liquefied natural gas trains.

+ References

No definition available.

+ Details

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- Definition

Percentage of future ownership diluted

+ References

No definition available.

+ Details

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- Definition

Schedule of equity method investments and joint ventures.

+ References

No definition available.

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- Definition

Amount of payable due to an entity that is affiliated with the reporting entity by means of direct or indirect ownership. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19)(a)(5))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(k))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(12)(b)(3))
-URI http://asc.fasb.org/extlink&oid=6488278&loc=d3e603758-122996

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Balance Type:	credit
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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Amount of the entity's equity method investment which has been sold.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash outflow associated with the investment in or advances to an entity in which the reporting entity shares control of the entity with another party or group.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 5A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=108788376&loc=SL6759159-111685

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Joint Venture and Consortium Arrangements - Additional Information (Detail) $ in Millions			3 Months Ended
	Mar. 08, 2019 USD ($)	Nov. 08, 2018 USD ($)	Mar. 31, 2019 USD ($) Train LNG	Dec. 31, 2018 USD ($)
Schedule Of Equity Method Investments And Joint Ventures [Line Items]
Investment in unconsolidated affiliate related amortization			$ 3
Chevron-Lummus Global [Member]
Schedule Of Equity Method Investments And Joint Ventures [Line Items]
Equity method investment, percentage			50.00%
NET Power [Member]
Schedule Of Equity Method Investments And Joint Ventures [Line Items]
Equity method investment, percentage			32.20%
McDermott/CTCI [Member]
Schedule Of Equity Method Investments And Joint Ventures [Line Items]
Equity method investment, percentage			50.00%
io Oil and Gas [Member]
Schedule Of Equity Method Investments And Joint Ventures [Line Items]
Equity method investment, percentage			50.00%
Qingdao McDermott Wuchuan Offshore Engineering Company Ltd. [Member]
Schedule Of Equity Method Investments And Joint Ventures [Line Items]
Equity method investment, percentage			50.00%
Accrued Liabilities [Member] \| McDermott/CTCI [Member]
Schedule Of Equity Method Investments And Joint Ventures [Line Items]
Advances to ventures			$ 95	$ 95
Accrued Liabilities [Member] \| Proportionately Consolidated Joint Ventures [Member]
Schedule Of Equity Method Investments And Joint Ventures [Line Items]
Advances to ventures			$ 44	$ 53
CTCI [Member] \| McDermott/CTCI [Member]
Schedule Of Equity Method Investments And Joint Ventures [Line Items]
Equity method investment, percentage			50.00%
Exelon [Member] \| NET Power [Member]
Schedule Of Equity Method Investments And Joint Ventures [Line Items]
Equity method investment, percentage			32.20%
8 Rivers Capital [Member] \| NET Power [Member]
Schedule Of Equity Method Investments And Joint Ventures [Line Items]
Equity method investment, percentage			32.20%
Oxy Low Carbon Ventures LLC [Member] \| NET Power [Member]
Schedule Of Equity Method Investments And Joint Ventures [Line Items]
Equity method investment, percentage	3.30%	10.00%	3.30%
Equity method investment, amount sold		$ 60
Percentage of future ownership diluted		3.30%
Cash payment on equity method investment	$ 20
Baker Hughes [Member] \| io Oil and Gas [Member]
Schedule Of Equity Method Investments And Joint Ventures [Line Items]
Equity method investment, percentage			50.00%
Wuhan Wuchuan Investment Holding Co., Ltd. [Member] \| Qingdao McDermott Wuchuan Offshore Engineering Company Ltd. [Member]
Schedule Of Equity Method Investments And Joint Ventures [Line Items]
Equity method investment, percentage			50.00%
McDermott/Orano [Member] \| McDermott [Member] \| Variable Interest Entities ("VIEs") [Member]
Schedule Of Equity Method Investments And Joint Ventures [Line Items]
Ownership percentange in consolidated joint ventures			52.00%
McDermott/Orano [Member] \| Orano [Member] \| Variable Interest Entities ("VIEs") [Member]
Schedule Of Equity Method Investments And Joint Ventures [Line Items]
Ownership percentange in consolidated joint ventures			48.00%
McDermott/Zachry [Member]
Schedule Of Equity Method Investments And Joint Ventures [Line Items]
Ownership percentage by parent			50.00%
Number of liquefied natural gas trains \| Train			2
McDermott/Zachry [Member] \| Zachry [Member]
Schedule Of Equity Method Investments And Joint Ventures [Line Items]
Ownership percentage by noncontrolling owners			50.00%
McDermott/Zachry/Chiyoda [Member]
Schedule Of Equity Method Investments And Joint Ventures [Line Items]
Ownership percentage by parent			33.30%
McDermott/Zachry/Chiyoda [Member] \| Zachry [Member]
Schedule Of Equity Method Investments And Joint Ventures [Line Items]
Ownership percentage by noncontrolling owners			33.30%
McDermott/Zachry/Chiyoda [Member] \| Chiyoda [Member]
Schedule Of Equity Method Investments And Joint Ventures [Line Items]
Ownership percentage by noncontrolling owners			33.30%
McDermott/Chiyoda [Member]
Schedule Of Equity Method Investments And Joint Ventures [Line Items]
Ownership percentage by parent			50.00%
Number of Liquefied Natural Gas \| LNG			3
McDermott/Chiyoda [Member] \| Chiyoda [Member]
Schedule Of Equity Method Investments And Joint Ventures [Line Items]
Ownership percentage by noncontrolling owners			50.00%
McDermott/CTCI [Member]
Schedule Of Equity Method Investments And Joint Ventures [Line Items]
Ownership percentage by parent			42.50%
McDermott/CTCI [Member] \| CTCI [Member]
Schedule Of Equity Method Investments And Joint Ventures [Line Items]
Ownership percentage by noncontrolling owners			57.50%