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Derivative Instruments and Hedging Activities - Interest Rate Swap Agreements (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013
U.S. Dollar-denominated interest rate swaps 1 [Member] |
Derivative [Line Items] |
Interest Rate Index | LIBOR
Principal Amount | $ 404,464
Fair Value / Carrying Amount of Asset / (Liability) | (66,829)
Weighted-Average Remaining Term (Years) | 23 years 1 month 6 days
Fixed Interest Rate | 4.90%
U.S. Dollar-denominated interest rate swaps 2 [Member] |
Derivative [Line Items] |
Interest Rate Index | LIBOR
Principal Amount | 3,217,495
Fair Value / Carrying Amount of Asset / (Liability) | (306,428)
Weighted-Average Remaining Term (Years) | 6 years 6 months
Fixed Interest Rate | 3.80%
U.S. Dollar-denominated interest rate swaps 3 [Member] |
Derivative [Line Items] |
Interest Rate Index | LIBOR
Principal Amount | 300,000
Fair Value / Carrying Amount of Asset / (Liability) | 4,735
Weighted-Average Remaining Term (Years) | 2 months 12 days
Fixed Interest Rate | 1.70%
U.S. Dollar-denominated interest rate swaps 4 [Member] |
Derivative [Line Items] |
Interest Rate Index | LIBOR
Principal Amount | 469,011
Fair Value / Carrying Amount of Asset / (Liability) | 81,118
Weighted-Average Remaining Term (Years) | 23 years 1 month 6 days
Fixed Interest Rate | 4.80%
Euro-denominated interest rate swaps [Member] |
Derivative [Line Items] |
Interest Rate Index | EURIBOR
Principal Amount | 340,221
Fair Value / Carrying Amount of Asset / (Liability) | (31,651)
Weighted-Average Remaining Term (Years) | 7 years
Fixed Interest Rate | 3.10%
Interest rate swap agreements [Member] |
Derivative [Line Items] |
Fair Value / Carrying Amount of Asset / (Liability) | $ (319,055)

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition Average remaining period until maturity of the derivative contract, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition The reference rate for the variable rate of the interest rate derivative, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR. + References No definition available. + Details
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- Definition Fair value of the assets less the liabilities of a derivative or group of derivatives. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13433-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13495-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 + Details
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- Definition Fixed interest rate related to the interest rate derivative. + References No definition available. + Details
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- Details
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