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Summary of Significant Accounting Policies - Summary of Financing Receivables (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified | Dec. 31, 2012 Vessel | Dec. 31, 2011
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Financing Receivable, Recorded Investment [Line Items] |  |
Ownership percentage |  | 49.00%
Number of vessels held as collateral | 1 |
Subsequent Event [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Number of vessels held as collateral | 2 |
Minimum [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Percentage of carrying value of loan | 95.00% |
Teekay Tangguh Borrower LLC [Member] | Teekay LNG [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Ownership percentage | 99.00% |
Teekay Tangguh Borrower LLC [Member] | Teekay BLT Corporation [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Ownership percentage | 70.00% |
Loans to equity accounted investees and joint venture partners carrying value | 24.0 | 19.1

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- Definition Aggregate amount of receivables to be collected from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth, at the financial statement date. which are usually due after one year (or one business cycle). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 57 -Paragraph 2 -Subparagraph d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.11) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(k)(1)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 11 -Article 5 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph k -Subparagraph 1 -Article 4 + Details
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