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Operating and Direct Financing Leases - Charters-out - Additional Information (Detail) - USD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Property Subject to or Available for Operating Lease [Line Items] |  |
Carrying amount of the vessels accounted for as operating leases | $ 3,100.0 | $ 6,600.0
Cost of the vessels | 4,100.0 | 9,100.0
Accumulated depreciation of the vessels | 1,000.0 | 2,500.0
Teekay Offshore |  |
Property Subject to or Available for Operating Lease [Line Items] |  |
Carrying amount of the vessels accounted for as operating leases |  | 3,500.0
Cost of the vessels |  | 4,700.0
Accumulated depreciation of the vessels |  | $ 1,200.0
Charters-out |  |
Property Subject to or Available for Operating Lease [Line Items] |  |
Total | 2,400.0 |
Minimum scheduled future revenues to be received by the company in current year | 517.7 |
Minimum scheduled future revenues to be received by the company in second year | 404.7 |
Minimum scheduled future revenues to be received by the company in third year | 361.9 |
Minimum scheduled future revenues to be received by the company in fourth year | 295.8 |
Minimum scheduled future revenues to be received by the company in fifth year | 273.7 |
Minimum scheduled future revenues to be received by the company thereafter | $ 582.1 |

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- Definition The amount of accumulated depreciation, by major property class, recorded on property subject to or available for lease as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84164653&loc=d3e41551-112718 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=77907726&loc=d3e41460-112716 + Details
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