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Financial Instruments - Schedule of Estimated Fair Value of Partnership's Financial Instruments on Recurring Basis (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | ---
Other: |  |
Long-term debt (note 10) | $ (1,413,353) | $ (1,315,231)
Carrying Amount Asset (Liability) [Member] |  |
Other: |  |
Advances to joint venture partner (note 8) | 14,004 | 10,200
Carrying Amount Asset (Liability) [Member] | Level 1 [Member] |  |
Recurring: |  |
Cash and cash equivalents and restricted cash | 642,166 | 589,261
Carrying Amount Asset (Liability) [Member] | Level 2 [Member] | Interest rate swap agreements [Member] |  |
Derivative instruments (note 13) |  |
Interest rate swap agreements - assets | 165,687 | 159,603
Interest rate swap agreements - liabilities | (304,220) | (304,066)
Carrying Amount Asset (Liability) [Member] | Level 2 [Member] | Cross currency swap agreement [Member] |  |
Derivative instruments (note 13) |  |
Cross currency swap agreement | (2,623) |
Carrying Amount Asset (Liability) [Member] | Level 3 [Member] |  |
Derivative instruments (note 13) |  |
Other derivative | 1,100 | (600)
Carrying Amount Asset (Liability) [Member] | Public [Member] | Level 1 [Member] |  |
Other: |  |
Long-term debt (note 10) | (125,791) |
Carrying Amount Asset (Liability) [Member] | Private [Member] | Level 2 [Member] |  |
Other: |  |
Long-term debt (note 10) | (1,287,562) | (1,315,231)
Fair Value Asset (Liability) [Member] | Level 1 [Member] |  |
Recurring: |  |
Cash and cash equivalents and restricted cash | 642,166 | 589,261
Fair Value Asset (Liability) [Member] | Level 2 [Member] | Interest rate swap agreements [Member] |  |
Derivative instruments (note 13) |  |
Interest rate swap agreements - assets | 165,687 | 159,603
Interest rate swap agreements - liabilities | (304,220) | (304,066)
Fair Value Asset (Liability) [Member] | Level 2 [Member] | Cross currency swap agreement [Member] |  |
Derivative instruments (note 13) |  |
Cross currency swap agreement | (2,623) |
Fair Value Asset (Liability) [Member] | Level 3 [Member] |  |
Derivative instruments (note 13) |  |
Other derivative | 1,100 | (600)
Fair Value Asset (Liability) [Member] | Public [Member] | Level 1 [Member] |  |
Other: |  |
Long-term debt (note 10) | (129,439) |
Fair Value Asset (Liability) [Member] | Private [Member] | Level 2 [Member] |  |
Other: |  |
Long-term debt (note 10) | $ (1,170,788) | $ (1,191,117)

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- Definition Unsecured advances to and from joint venture partners. + References No definition available. + Details
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- Definition Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7, 8, 9, 10 -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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Fair value as of the balance sheet date of all derivative liabilities not designated as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 17 -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 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624163-113959 + Details
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- Definition Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20, 22 -Article 5 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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