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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

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The cash outflow from construction costs to date on capital projects that have not been completed and assets being constructed that are not ready to be placed into service.

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Commitments and Contingencies - Additional Information - Presentation of Financial Statements (Details) $ in Thousands	9 Months Ended		15 Months Ended
	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Dec. 31, 2018 USD ($)	Jul. 31, 2017 newbuilding	Dec. 31, 2016 USD ($)
Loss Contingencies [Line Items]
Net operating cash flow	$ 192,657	$ 274,160
Working capital deficit	539,000
Current portion of long-term debt	731,326				$ 586,892
Escrow deposit	27,470				92,265
Number of newbuildings \| newbuilding				2
Petrojarl I FPSO Unit
Loss Contingencies [Line Items]
Escrow deposit	$ 24,300				$ 60,000
Scenario, Forecast
Loss Contingencies [Line Items]
Anticipated payments for vessels under construction			$ 509,000
Scenario, Forecast \| Newbuildings
Loss Contingencies [Line Items]
Undrawn borrowings			$ 243,000