Commitments and Contingencies - Additional Information - Vessels Under Construction (Detail) (USD $)	12 Months Ended
Dec. 31, 2014 FloatingAccommodationUnits	Dec. 31, 2013
Long-term Purchase Commitment [Line Items]
Payments made towards commitments for construction of certain carriers and tankers	$ 1,706,500,000us-gaap_ConstructionInProgressGross	$ 796,324,000us-gaap_ConstructionInProgressGross
Newbuildings [Member]
Long-term Purchase Commitment [Line Items]
Number of floating accommodation units	3
Estimated purchase price	2,800,000,000
Payments made towards commitments for construction of certain carriers and tankers	421,900,000
Carrying value of completed units not yet in service	1,300,000,000
Capitalized interest and other miscellaneous construction costs	9,600,000
Estimated remaining payments required to be made under newbuilding contract in 2015	616,800,000
Estimated remaining payments required to be made under newbuilding contract in 2016	890,000,000
Estimated remaining payments required to be made under newbuilding contract in 2017	517,500,000
Estimated remaining payments required to be made under newbuilding contract in 2018	$ 350,900,000
Newbuildings [Member] \| Delivery in 2016 [Member]
Long-term Purchase Commitment [Line Items]
Number of floating accommodation units	2
Newbuildings [Member] \| Delivery in February 2015 [Member]
Long-term Purchase Commitment [Line Items]
Number of floating accommodation units	1
Newbuildings [Member] \| Liquefied Natural Gas [Member]
Long-term Purchase Commitment [Line Items]
Number of vessels	8
Newbuildings [Member] \| Liquefied Natural Gas [Member] \| Delivery in 2016 [Member]
Long-term Purchase Commitment [Line Items]
Number of vessels	2
Newbuildings [Member] \| Liquefied Natural Gas [Member] \| Delivery In Two Thousand Seventeen [Member]
Long-term Purchase Commitment [Line Items]
Number of vessels	3
Newbuildings [Member] \| Liquefied Natural Gas [Member] \| Delivery In Two Thousand Eighteen [Member]
Long-term Purchase Commitment [Line Items]
Number of vessels	3
Newbuildings [Member] \| Long Distance Towing And Offshore Installation [Member]
Long-term Purchase Commitment [Line Items]
Number of vessels	4
Newbuildings [Member] \| Long Distance Towing And Offshore Installation [Member] \| Delivery in 2016 [Member]
Long-term Purchase Commitment [Line Items]
Number of vessels	4
Newbuildings [Member] \| Fso Segment [Member] \| Delivery In Two Thousand Seventeen [Member]
Long-term Purchase Commitment [Line Items]
Number of vessels	1
Newbuildings [Member] \| FPSO Segment [Member] \| First Quarter Two Thousand and Sixteen [Member]
Long-term Purchase Commitment [Line Items]
Number of vessels	1

Capitalized interest and other miscellaneous construction costs.

No definition available.

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- Definition

Carrying Value Of Completed Units Not In Service

+ References

No definition available.

+ Details

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- Definition

Number Of Floating Accommodation Units Committed

+ References

No definition available.

+ Details

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- Definition

Number Of Vessels In Partnership

+ References

No definition available.

+ Details

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- Definition

Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

+ Details

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- Definition

The minimum amount the entity agreed to spend under the long-term purchase commitment.

+ References

No definition available.

+ Details

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- Definition

Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 440

-SubTopic 10

-Section 50

-Paragraph 4

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6394976&loc=d3e25336-109308

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- Definition

Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

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- Definition

Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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- Definition

Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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