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Obligations Related to Finance Leases (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($) lessor vessel	Dec. 31, 2019 USD ($)
Capital Leased Assets [Line Items]
Finance Lease, Liability	$ 1,700,965	$ 1,825,692
Finance Lease, Liability, Current	150,408	95,339
Finance Lease, Liability, Noncurrent	1,550,557	1,730,353
Teekay LNG | LNG Carriers
Capital Leased Assets [Line Items]
Finance Lease, Liability	$ 1,340,922	1,410,904
Teekay Tankers
Capital Leased Assets [Line Items]
Number of vessels obligated to purchase under sales-type lease | vessel	8
Number of Vessels With Purchase Option under Sales-type Lease | vessel	16
Teekay Tankers | Suezmax
Capital Leased Assets [Line Items]
Finance Lease, Liability	$ 360,043	$ 414,788
Sales-type lease [Member] | Teekay LNG | LNG Carriers
Capital Leased Assets [Line Items]
Number of Lessors | lessor	9
Sales-type lease [Member] | Teekay Tankers
Capital Leased Assets [Line Items]
Number of Lessors | lessor	14
Sales-type lease [Member] | Teekay Tankers | Variable Interest Entity, Primary Beneficiary [Member]
Capital Leased Assets [Line Items]
Number of Lessors | lessor	12

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- Definition

Number of vessels obligated to purchase under sales-type lease

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- Definition

Present value of lessee's discounted obligation for lease payments from finance lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977

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- Definition

Present value of lessee's discounted obligation for lease payments from finance lease, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977

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- Definition

Present value of lessee's discounted obligation for lease payments from finance lease, classified as noncurrent.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977

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