Segment Reporting - Operating Information by Segment (Parenthetical) (Detail) - USD ($)

3 Months Ended

12 Months Ended

Dec. 31, 2019

Sep. 30, 2019

Jun. 30, 2019

Mar. 31, 2019

Dec. 31, 2018

Sep. 30, 2018

^[3]

Jun. 30, 2018

^[3]

Mar. 31, 2018

^[3]

Dec. 31, 2019

Dec. 31, 2018

Dec. 31, 2017

Segment Reporting Information [Line Items]

Transaction costs

$ 28,000,000

^[1]

$ 14,000,000

^[1]

$ 11,000,000

^[1]

$ 4,000,000

^[1]

$ 3,000,000

^[2],[3]

$ 5,000,000

^[2]

$ 37,000,000

^[2]

$ 3,000,000

^[2]

$ 57,000,000

$ 48,000,000

$ 9,000,000

Restructuring and integration costs

11,000,000

^[4]

14,000,000

^[4]

$ 20,000,000

^[4]

$ 69,000,000

^[4]

28,000,000

^[3],[4]

$ 31,000,000

^[4]

$ 63,000,000

^[4]

$ 12,000,000

^[4]

114,000,000

134,000,000

Impairment charges

$ 18,000,000

^[5]

58,000,000

^[3],[5]

18,000,000

58,000,000

1,000,000

Accrued and unpaid capital expenditures reported in PP&E and accrued liabilities

160,000,000

26,000,000

160,000,000

26,000,000

$ 8,000,000

Receivables from unconsolidated affiliates

$ 48,000,000

$ 15,000,000

48,000,000

15,000,000

Amazon Pipe-lay and Construction Vessel [Member]

Segment Reporting Information [Line Items]

Bareboat charter agreement, term

11 years

Corporate and Other [Member]

Segment Reporting Information [Line Items]

Transaction costs

57,000,000

48,000,000

$ 9,000,000

Restructuring and integration costs

114,000,000

134,000,000

Impairment charges

$ 18,000,000

58,000,000

Expense with need to make alternate arrangements

$ 25,000,000

Gain on sale of assets

$ 4,000,000

[1]	2019—primarily relates to legal and other professional fees associated with the sale processes for the pipe fabrication business and the Lummus Technology business and the now-terminated effort to sell our industrial storage tanks business, as well as professional and other fees associated with the Chapter 11 Cases.
[2]	2018—primarily relates to professional service fees (including audit, legal and advisory services) associated with the Combination. See Note 3, Business Combination, for further discussion.
[3]	Results in the second, third and fourth quarters of 2018 reflect impacts of the Combination from the Combination Date.
[4]	Primarily represents costs related to achieve our CPI. See Note 12, Restructuring and Integration Costs, for further discussion.
[5]	Represents charges associated with the impairment of vessels and other marine equipment, due to changes in their level of planned utilization. See Note 16, Fair Value Measurements, for further discussion.

MCDERMOTT INTERNATIONAL INC 10-K