Debt - Additional Information (Detail) - USD ($)			1 Months Ended	3 Months Ended								9 Months Ended	12 Months Ended
	May 13, 2016	May 12, 2016	Apr. 30, 2014	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Sep. 30, 2016	Dec. 31, 2016	Dec. 31, 2015	Apr. 30, 2016	Apr. 18, 2016	Feb. 29, 2016	Oct. 31, 2015	Sep. 30, 2010
Debt Instrument [Line Items]
Debt issuance costs									$ 16,000,000			$ 16,000,000		$ 20,000,000
Bonds issued related to JRMSA general agreement of indemnity									85,000,000			85,000,000		54,000,000
Financial Letter of Credit [Member]
Debt Instrument [Line Items]
Letter of credit supported by Cash collateral									$ 21,000,000			$ 21,000,000		45,000,000
After March 31, 2016 But Before April 16, 2017
Debt Instrument [Line Items]
Aggregate amount																	$ 25,000,000
Senior Notes [Member]
Debt Instrument [Line Items]
Issue of second-lien seven-year senior secured notes			$ 500,000,000
Tangible equity units, aggregate principal amount			48,000,000
Letter of Credit Facility [Member]
Debt Instrument [Line Items]
Letter of credit, first lien	$ 450,000,000		400,000,000															$ 520,000,000
Debt instrument maturity year												2017
Minimum fixed charge coverage ratio											1.15%
Maximum Leverage Ratio									4.50%	4.50%	4.50%
Maximum leverage ratio, there after									3.50%			3.50%
Debt instrument covenant maximum capital expenditures														125,000,000
Line of credit facility, description												extend the maturity date of the LC Facility commitments to April 22, 2019, unless the Term Loan has not been repaid or refinanced by January 15, 2019, in which case the LC Facility commitments will expire on January 15, 2019;
Line of credit, extended maturity date												Apr. 22, 2019
Line of credit, expiration date												Jan. 15, 2019
Line of Credit facility maximum amount outstanding												$ 355,000,000		384,000,000
Cash collateralize letter of credit permitted to deposit, Amount									$ 300,000,000			300,000,000
Letter of credit supported by Cash collateral									$ 99,000,000			99,000,000		102,000,000
Letter of Credit Facility [Member] | Middle Eastern Bank [Member]
Debt Instrument [Line Items]
Letter of credit, first lien															$ 100,000,000
Line of Credit facility maximum amount outstanding												$ 83,000,000
Letter of Credit Facility [Member] | Maximum [Member]
Debt Instrument [Line Items]
Secured leverage ratio									2.00%	2.00%	2.00%
Secured leverage ratio thereafter												1.50%
Letter of Credit Facility [Member] | Scenario Forecast [Member]
Debt Instrument [Line Items]
Maximum Leverage Ratio				4.00%	4.00%	4.50%	4.50%	4.50%
Debt instrument covenant maximum capital expenditures													$ 250,000,000
Debt instrument covenant maximum capital expenditures thereafter													$ 375,000,000
Letter of Credit Facility [Member] | Scenario Forecast [Member] | Maximum [Member]
Debt Instrument [Line Items]
Secured leverage ratio				2.00%	2.00%	2.00%	2.00%	2.00%
Term Loan [Member]
Debt Instrument [Line Items]
Letter of credit, first lien			300,000,000
Debt instrument maturity year												2019
Increased applicable margin payable on term loan		3.00%
Voluntarily prepayment of Term Loan under credit agreement	75,000,000
Tangible Equity Units
Debt Instrument [Line Items]
Issue of tangible equity units			$ 288,000,000
DLV 2000 [Member]
Debt Instrument [Line Items]
Increase decrease in indebtedness	150,000,000															$ 20,000,000
DLV 2000 [Member] | Maximum [Member]
Debt Instrument [Line Items]
Covenant acquisition limit	150,000,000
Prepayment or purchase of junior priority debt covenant limit	$ 100,000,000
North Ocean 105 [Member] | Secured Debt [Member] | North Ocean Construction Financing [Member]
Debt Instrument [Line Items]
Percentage of interest acquired in subsidiary																			75.00%
Ownership percentage in Oceanteam ASA's																			25.00%
Reimbursement Agreement [Member]
Debt Instrument [Line Items]
Administrative or commitment fees														0
Bank guarantees issued									$ 248,000,000			$ 248,000,000		$ 118,000,000