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Obligations Related to Finance Leases - Schedule of Repayments of Capital Leases Including Imputed Interest (Detail) - Teekay Tankers $ in Thousands | 1 Months Ended |  |
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Jan. 31, 2024 vessel | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
Capital Leased Assets [Line Items] |  |  |
Finance Lease, Liability, Payments, Due Next Twelve Months |  | $ 31,951 |
Finance Lease, Liability, Payments, Due Year Two |  | 30,170 |
Finance Lease, Liability, Payments, Due Year Three |  | 28,422 |
Finance Lease, Liability, Payments, Due Year Four |  | 26,674 |
Finance Lease, Liability, Payments, Due Year Five |  | 25,064 |
Finance Lease, Liability, to be Paid, after Year Five |  | 39,414 |
Suezmax, Aframax and LR2 Vessels |  |  |
Capital Leased Assets [Line Items] |  |  |
Approximate capital leases future minimum payments due |  | 181,700 | $ 695,200
Finance Lease, Liability, Undiscounted Excess Amount |  | $ 40,900 | $ 158,700
Suezmax, Aframax and LR2 Vessels | January 2024 Sale Leaseback | Subsequent Events |  |  |
Capital Leased Assets [Line Items] |  |  |
Number Of Vessels To Be Purchased | vessel | 8 |  |

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- Definition Amount of lessee's undiscounted obligation for lease payments for finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-6 + Details
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- Definition Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-6 + Details
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- Definition Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-6 + Details
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- Definition Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-6 + Details
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- Definition Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-6 + Details
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