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Fair Value Measurement (Tables) | 12 Months Ended
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Dec. 31, 2011
Fair Value Measurements [Abstract] |
The estimated fair value of financial instruments that are measured at fair value on a recurring basis |
|  |  |  | December 31, 2011 |  |  | December 31, 2010 |
|  | Fair Value Hierarchy Level (1) |  | Carrying Amount Asset (Liability) $ |  |  | Fair Value Asset (Liability) $ |  |  | Carrying Amount Asset (Liability) $ |  |  | Fair Value Asset (Liability) $ |
Cash and cash equivalents and restricted cash |  |  |  |  | 589,261 |  |  |  | 589,261 |  |  |  | 653,193 |  |  |  | 653,193 |
Advances to and from affiliates and joint venture |  |  |  |  | (5,478 | ) |  |  | (5,478 | ) |  |  | (127,218 | ) |  |  | (127,218 | )
Long-term debt (note 10) |  |  |  |  | (1,315,231 | ) |  |  | (1,191,117 | ) |  |  | (1,399,115 | ) |  |  | (1,292,026 | )
Advances to and from joint venture partners (note 8) |  |  |  |  | 10,200 |  |  |  | — | (2) |  |  | 10,141 |  |  |  | — | (2)
Derivative instruments (note 13) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate swap agreements – assets |  | Level 2 |  |  | 159,603 |  |  |  | 159,603 |  |  |  | 66,870 |  |  |  | 66,870 |
Interest rate swap agreements – liabilities |  | Level 2 |  |  | (304,066 | ) |  |  | (304,066 | ) |  |  | (201,463 | ) |  |  | (201,463 | )
Other derivative |  | Level 3 |  |  | (600 | ) |  |  | (600 | ) |  |  | (10,000 | ) |  |  | (10,000 | )
(1) | The fair value hierarchy level is only applicable to each financial instrument on the consolidated balance sheets that are recorded at fair value on a recurring basis.
(2) | The fair value of the Partnership’s advances to and from its joint venture partners as at December 31, 2011 and 2010 was not determinable given the amounts are non-current with no fixed repayment terms (see Note 8).
Changes in fair value of assets (liabilities) that are measured on a recurring basis using significant unobservable inputs (Level 3) |
|  | Year ended December 31, |
|  | 2011 $ |  |  | 2010 $ |
Fair value at January 1 |  |  | (10,000 | ) |  |  | (10,600 | )
Realized and unrealized gains (losses) included in earnings |  |  | 9,307 |  |  |  | (1,319 | )
Settlements |  |  | 93 |  |  |  | 1,919 |
Fair value at December 31 |  |  | (600 | ) |  |  | (10,000 | )

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- Definition Tabular disclosure of the fair value measurement of liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and gains or losses recognized in other comprehensive income and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issuances, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs) by class of liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 32 -Subparagraph c -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 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19207-110258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19279-110258 + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 820 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph -Name Accounting Standards Codification -Paragraph 1 -Section 50 -URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19190-110258 + Details
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