Financial Instruments Financing Receivables (Detail) $ in Thousands	Jun. 30, 2020 USD ($) SecurityLoan joint_venture lease
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Current Fiscal Year	$ 15,160
Financing Receivable, Originated Two Years before Latest Fiscal Year	213,041
Financing Receivable, Originated Four Years before Latest Fiscal Year	73,375
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	390,571
Financing Receivable, before Allowance for Credit Loss	692,147
Performing Financial Instruments [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Net Investment in Lease, Originated in Current Fiscal Year	15,160
Net Investment in Lease, Originated Two Years before Latest Fiscal Year	0
Net Investment in Lease, Originated Four Years before Latest Fiscal Year	0
Net Investment in Lease, Originated Five or More Years before Latest Fiscal Year	0
Net Investment in Lease	$ 15,160
Teekay Parent
Financing Receivable, Credit Quality Indicator [Line Items]
Number of direct financing and sales-type leases \| lease	1
Teekay LNG
Financing Receivable, Credit Quality Indicator [Line Items]
Number of direct financing and sales-type leases \| lease	3
Number of loans to equity-accounted joint ventures \| SecurityLoan	2
Number of equity-accounted joint ventures \| joint_venture	5
Sales-Type or Direct Financing [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Net Investment in Lease, Originated in Current Fiscal Year	$ 0
Net Investment in Lease, Originated Two Years before Latest Fiscal Year	213,041
Net Investment in Lease, Originated Four Years before Latest Fiscal Year	0
Net Investment in Lease, Originated Five or More Years before Latest Fiscal Year	338,305
Net Investment in Lease	551,346
Sales-Type or Direct Financing [Member] \| Teekay Tangguh Joint Venture [Member] \| Performing Financial Instruments [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Net Investment in Lease, Originated in Current Fiscal Year	0
Net Investment in Lease, Originated Two Years before Latest Fiscal Year	0
Net Investment in Lease, Originated Four Years before Latest Fiscal Year	0
Net Investment in Lease, Originated Five or More Years before Latest Fiscal Year	338,305
Net Investment in Lease	338,305
Sales-Type or Direct Financing [Member] \| Bahrain LNG Joint Venture [Member] \| Performing Financial Instruments [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Net Investment in Lease, Originated in Current Fiscal Year	0
Net Investment in Lease, Originated Two Years before Latest Fiscal Year	213,041
Net Investment in Lease, Originated Four Years before Latest Fiscal Year	0
Net Investment in Lease, Originated Five or More Years before Latest Fiscal Year	0
Net Investment in Lease	213,041
Loans Receivable [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	73,375
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	52,266
Financing Receivable, before Allowance for Credit Loss	125,641
Exmar Lpg Bvba [Member] \| Loans Receivable [Member] \| Performing Financial Instruments [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	52,266
Financing Receivable, before Allowance for Credit Loss	52,266
Bahrain LNG Joint Venture [Member] \| Loans Receivable [Member] \| Performing Financial Instruments [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	73,375
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0
Financing Receivable, before Allowance for Credit Loss	$ 73,375
FSU [Member] \| Teekay LNG
Financing Receivable, Credit Quality Indicator [Line Items]
Number Of Vessels \| lease	1
Sales-Type or Direct Financing [Member] \| LNG Carriers [Member] \| Teekay LNG
Financing Receivable, Credit Quality Indicator [Line Items]
Number Of Vessels \| lease	18

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- Definition

Number of direct financing and sales-type leases

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Number of equity-accounted joint ventures

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Amount of net investment in sales-type and direct financing lease.

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Amount, before allowance for credit loss, of financing receivable.

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