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Debt - Additional Information (Detail) - USD ($)				3 Months Ended
Debt - Additional Information (Detail) - USD ($)	Oct. 30, 2018	May 10, 2018	Apr. 18, 2018	Mar. 31, 2019	Dec. 31, 2018	May 08, 2018
Debt Instrument [Line Items]
Senior secured long-term borrowing						$ 2,260,000,000
Letter of credit facility fee percentage				0.50%
Letter of credit outstanding fronting fee percentage				0.25%
Minimum fixed charge coverage ratio				1.50%
Maximum permitted leverage ratio				4.25%
Debt instrument covenant minimum liquidity				$ 200,000,000
Future maturities 2019				17,000,000
Future maturities 2020				23,000,000
JRM Mexico [Member]
Debt Instrument [Line Items]
Receivables sold				35,000,000
Factoring costs trade receivables				$ 1,000,000
Percentage of receivables sold withheld and received				10.00%
Cash received from receivables, net of fees and amounts withheld				$ 31,000,000
Fiscal Quarter Ending on or Before September 30, 2019 [Member]
Debt Instrument [Line Items]
Maximum permitted leverage ratio				4.25%
Fiscal Quarter Ending December 31, 2019 [Member]
Debt Instrument [Line Items]
Maximum permitted leverage ratio				4.00%
Fiscal Quarter Ending After December 31, 2019 and on or Before December 31, 2020 [Member]
Debt Instrument [Line Items]
Maximum permitted leverage ratio				3.75%
Fiscal Quarter Ending After December 31, 2020 and on or Before December 31, 2021 [Member]
Debt Instrument [Line Items]
Maximum permitted leverage ratio				3.50%
Fiscal Quarter Ending after December 31, 2021 [Member]
Debt Instrument [Line Items]
Maximum permitted leverage ratio				3.25%
Interest Rate Swap [Member] \| Designated as Hedging Instrument [Member] \| Cash Flow Hedging [Member]
Debt Instrument [Line Items]
Interest rate derivatives						1,940,000,000
Financial Letters of Credit [Member]
Debt Instrument [Line Items]
Letter of credit participation fee percentage				4.25%
Performance Stand By Letters Of Credit [Member]
Debt Instrument [Line Items]
Letter of credit participation fee percentage				2.125%
Maximum [Member] \| JRM Mexico [Member]
Debt Instrument [Line Items]
Base rate and applicable margin				2.00%
Maximum [Member] \| Interbank Equilibrium Interest Rate [Member] \| Mexico [Member]
Debt Instrument [Line Items]
Base rate and applicable margin				1.70%
Maximum [Member] \| Financial Letters of Credit [Member]
Debt Instrument [Line Items]
Letter of credit participation fee percentage				4.25%
Maximum [Member] \| Performance Stand By Letters Of Credit [Member]
Debt Instrument [Line Items]
Letter of credit participation fee percentage				2.125%
Minimum [Member] \| JRM Mexico [Member]
Debt Instrument [Line Items]
Base rate and applicable margin				1.40%
Minimum [Member] \| Interbank Equilibrium Interest Rate [Member] \| Mexico [Member]
Debt Instrument [Line Items]
Base rate and applicable margin				1.40%
Minimum [Member] \| Financial Letters of Credit [Member]
Debt Instrument [Line Items]
Letter of credit participation fee percentage				3.75%
Minimum [Member] \| Performance Stand By Letters Of Credit [Member]
Debt Instrument [Line Items]
Letter of credit participation fee percentage				1.875%
Letter of Credit Facility [Member]
Debt Instrument [Line Items]
Senior secured long-term borrowing				$ 1,390,000,000
Available capacity under credit facility				$ 19,000,000
Facility expire month and year				2023-05
Letters of credit outstanding				$ 1,370,000,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Senior secured long-term borrowing				1,000,000,000.0
Available capacity under credit facility				$ 714,000,000
Facility expire month and year				2023-05
Borrowing outstanding				$ 178,000,000
Maximum borrowing outstanding				317,000,000
Letters of credit outstanding				$ 108,000,000
Revolving Credit Facility [Member] \| Eurodollar Rate [Member]
Debt Instrument [Line Items]
Base rate and applicable margin				4.25%
Revolving Credit Facility [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Base rate and applicable margin				3.25%
Revolving Credit Facility [Member] \| Maximum [Member] \| Eurodollar Rate [Member]
Debt Instrument [Line Items]
Base rate and applicable margin				4.25%
Revolving Credit Facility [Member] \| Maximum [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Base rate and applicable margin				3.25%
Revolving Credit Facility [Member] \| Minimum [Member] \| Eurodollar Rate [Member]
Debt Instrument [Line Items]
Base rate and applicable margin				3.75%
Revolving Credit Facility [Member] \| Minimum [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Base rate and applicable margin				2.75%
Financial Letters of Credit [Member]
Debt Instrument [Line Items]
Letters of credit outstanding				$ 49,000,000
Term Facility [Member] \| Interest Rate Swap [Member] \| Designated as Hedging Instrument [Member] \| Cash Flow Hedging [Member]
Debt Instrument [Line Items]
Interest rate derivatives						$ 1,940,000,000
Term Facility [Member] \| Eurodollar Rate [Member]
Debt Instrument [Line Items]
Base rate and applicable margin				5.00%
Term Facility [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Base rate and applicable margin				4.00%
Term Facility [Member] \| Floor Rate [Member]
Debt Instrument [Line Items]
Base rate and applicable margin				1.00%
Term Facility [Member]
Debt Instrument [Line Items]
Term facility, borrowings outstanding Amount				$ 2,237,000,000	$ 2,243,000,000
Second-lien Notes [Member]
Debt Instrument [Line Items]
Aggregate principal amount redeemed				$ 500,000,000
Debt instrument interest rate				8.00%
Senior Notes [Member]
Debt Instrument [Line Items]
Debt instrument interest rate			10.625%
Issue of second-lien seven-year senior secured notes			$ 1,300,000,000
Debt instrument maturity month and year			2024-05
Redemption price percentage			100.00%
Senior Notes [Member] \| One or More Qualified Equity Offerings [Member]
Debt Instrument [Line Items]
Redemption price percentage			110.625%
Senior Notes [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Redemption price percentage			35.00%
Credit Agreement [Member]
Debt Instrument [Line Items]
Senior secured long-term borrowing		$ 4,650,000,000
Credit Agreement [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Debt instrument mandatory commitment reductions and prepayments subject to reinvestment rights with respect to asset sales		500,000,000
Credit Agreement [Member] \| Letter of Credit Facility [Member]
Debt Instrument [Line Items]
Senior secured long-term borrowing		$ 1,390,000,000
Excess cash flow		75.00%
Decrease in excess cash flow		50.00%
Excess cash flow percentage depending on secured leverage ratio		25.00%
Credit Agreement [Member] \| Term Facility Letters of Credit [Member]
Debt Instrument [Line Items]
Letter of credit facility fee percentage		3.00%
Credit Agreement [Member] \| Term Facility Letters of Credit [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Senior secured long-term borrowing				$ 319,900,000
Credit Agreement [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Senior secured long-term borrowing		$ 1,000,000,000.0
Credit Agreement [Member] \| Revolving Credit Facility [Member] \| Maximum [Member] \| Financial Letters of Credit [Member]
Debt Instrument [Line Items]
Avilable credit facility for issuance		200,000,000
Credit Agreement [Member] \| Term Facility [Member]
Debt Instrument [Line Items]
Senior secured long-term borrowing		$ 2,260,000,000
Term facility maturity period		7 years
Weighted average interest rate				7.70%
Debt instrument periodic payment				$ 5,650,000
Credit Agreement [Member] \| Term Facility [Member] \| Letter of Credit Facility [Member]
Debt Instrument [Line Items]
Debt instrument issued				297,000,000
Available capacity under credit facility				13,000,000
Credit Agreement [Member] \| Term Facility [Member] \| Financial Letters of Credit
Debt Instrument [Line Items]
Debt instrument issued				$ 48,000,000
Credit Agreement [Member] \| Senior Secured Credit Facility [Member] \| Letter of Credit Facility [Member]
Debt Instrument [Line Items]
Deposited cash collateral account to secure reimbursement obligations		$ 319,300,000
Credit Agreement [Member] \| Senior Secured Credit Facility [Member] \| Term Facility Letters of Credit [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Senior secured long-term borrowing		$ 310,000,000.0
Debt Instrument Variable Rate Administrative Agent's Prime Rate [Member] \| Term Facility [Member] \| Eurodollar Rate [Member]
Debt Instrument [Line Items]
Base rate and applicable margin				1.00%
Debt Instrument Variable Rate Administrative Agent's Prime Rate [Member] \| Term Facility [Member] \| Federal Funds Rate [Member]
Debt Instrument [Line Items]
Base rate and applicable margin				0.50%
Letter of Credit Agreement [Member] \| Letter of Credit Facility [Member]
Debt Instrument [Line Items]
Avilable credit facility for issuance				$ 25,000,000
Debt instrument issued				205,000,000
Available capacity under credit facility	$ 230,000,000
Facility expire month and year	2021-12
North Ocean Construction Financing [Member]
Debt Instrument [Line Items]
Term facility, borrowings outstanding Amount				16,000,000	$ 16,000,000
North Ocean Construction Financing [Member] \| Secured Debt [Member] \| North Ocean 105 [Member]
Debt Instrument [Line Items]
Term facility, borrowings outstanding Amount				16,000,000
Future maturities 2019				8,000,000
Future maturities 2020				$ 8,000,000