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Commitments and Contingencies - Additional Information - Vessels Under Construction (Detail)
$ in Thousands
12 Months Ended
Dec. 31, 2016
USD ($)
vessel
Dec. 31, 2015
USD ($)
Long-term Purchase Commitment [Line Items]    
Payments made towards commitments for construction of certain carriers and tankers | $ $ 987,658 $ 817,878
Newbuildings [Member]    
Long-term Purchase Commitment [Line Items]    
Expected cost of project | $ 3,000,000  
Payments made towards commitments for construction of certain carriers and tankers | $ 1,000,000  
Estimated remaining payments required to be made under newbuilding contract in 2017 | $ 1,100,000  
Estimated remaining payments required to be made under newbuilding contract in 2018 | $ 607,300  
Estimated remaining payments required to be made under newbuilding contract in 2019 | $ $ 250,300  
Newbuildings [Member] | Liquefied Natural Gas [Member]    
Long-term Purchase Commitment [Line Items]    
Number of vessels 9  
Newbuildings [Member] | Long Distance Towing and Offshore Installation [Member]    
Long-term Purchase Commitment [Line Items]    
Number of vessels 3  
Newbuildings [Member] | Shuttle Tankers [Member]    
Long-term Purchase Commitment [Line Items]    
Number of vessels 3  
Newbuildings [Member] | Floating Storage and Off-take [Member]    
Long-term Purchase Commitment [Line Items]    
Number of vessels 1  
Newbuildings [Member] | FPSO Segment [Member]    
Long-term Purchase Commitment [Line Items]    
Number of vessels 1  
Newbuildings [Member] | Delivery in 2017 [Member] | Liquefied Natural Gas [Member]    
Long-term Purchase Commitment [Line Items]    
Number of vessels 3  
Newbuildings [Member] | Delivery in 2017 [Member] | Long Distance Towing and Offshore Installation [Member]    
Long-term Purchase Commitment [Line Items]    
Number of vessels 3  
Newbuildings [Member] | Delivery in 2017 [Member] | Shuttle Tankers [Member]    
Long-term Purchase Commitment [Line Items]    
Number of vessels 3  
Newbuildings [Member] | Delivery in 2017 [Member] | Floating Storage and Off-take [Member]    
Long-term Purchase Commitment [Line Items]    
Number of vessels 1  
Newbuildings [Member] | Delivery in 2017 [Member] | FPSO Segment [Member]    
Long-term Purchase Commitment [Line Items]    
Number of vessels 1  
Newbuildings [Member] | Delivery in 2018 [Member] | Long Distance Towing and Offshore Installation [Member]    
Long-term Purchase Commitment [Line Items]    
Number of vessels 4  
Newbuildings [Member] | Delivery in 2019 [Member] | Liquefied Natural Gas [Member]    
Long-term Purchase Commitment [Line Items]    
Number of vessels 2