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Chartered-in Vessels Obligations related to Finance Leases - Additional Information (Details) - LNG Carriers [Member]	36 Months Ended
	Jan. 31, 2019	Jun. 30, 2021 vessel	Jun. 30, 2021 lease
Obligations relating to Finance Leases [Line Items]
Number Of Vessels		9	9
Sale Leaseback Transaction, Imputed Interest Rate	5.10%
Minimum [Member]
Obligations relating to Finance Leases [Line Items]
Sale Leaseback Transaction, Lease Terms	7.5
Maximum [Member]
Obligations relating to Finance Leases [Line Items]
Sale Leaseback Transaction, Lease Terms	15

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- Definition

Number Of Vessels

+ References

No definition available.

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- Definition

[Line Items] for Obligations relating to Finance Leases [Table]

+ References

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- Definition

The financing cost related to leases that have been recorded under the deposit method, as a financing or as a capital leases in connection with the transaction involving the sale of property to another party and the lease of the property back to the seller.

+ References

No definition available.

+ Details

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X

- Definition

A description of the terms of the lease(s) related to the assets being leased-back in connection with the transaction involving the sale of property to another party and the lease of the property back to the seller.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 40
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=123416376&loc=d3e50796-112755

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 40
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123417830&loc=SL77919786-209982

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