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Derivative Instruments and Hedging Activities - Interest Rate Swap Agreements (Detail) $ in Thousands | 9 Months Ended
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Sep. 30, 2018 USD ($) interest_rate_swaps
U.S. Dollar-denominated interest rate swaps | LIBOR |
Derivative [Line Items] |
Principal Amount | $ 1,186,349
Fair Value / Carrying Amount of Asset / (Liability) | $ (6,189)
Weighted-Average Remaining Term (Years) | 3 years 11 months 12 days
Fixed interest rate | 2.90%
Euro-denominated interest rate swaps | EURIBOR |
Derivative [Line Items] |
Principal Amount | $ 89,873
Fair Value / Carrying Amount of Asset / (Liability) | $ (11,418)
Weighted-Average Remaining Term (Years) | 4 years 11 months 1 day
Fixed interest rate | 3.80%
Interest rate swap agreements |
Derivative [Line Items] |
Fair Value / Carrying Amount of Asset / (Liability) | $ (17,607)
Derivative, Number of Instruments Held | interest_rate_swaps | 2
Minimum | Interest rate swap agreements |
Derivative [Line Items] |
Debt instrument, basis spread on variable rate | 0.30%
Maximum | Interest rate swap agreements |
Derivative [Line Items] |
Debt instrument, basis spread on variable rate | 4.00%

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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 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 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 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 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611 Reference 4: 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=77997519&loc=d3e13495-108611 + Details
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