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Financial Instruments and Fair Value Measurements - Summary of Activity in Interest Rate Swaps (Detail) - Interest Rate Swaps [Member] - Cash Flow Hedges [Member] - Designated As Hedging Instrument [Member] - USD ($) | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
EUR |  |
Derivative [Line Items] |  |
Notional amounts at January 1 | $ 500,000,000 | $ 0
New contracts | 0 | 500,000,000
Matured, expired or settled contracts | 0 | 0
Notional amounts at March 31 | $ 500,000,000 | 500,000,000
CAD |  |
Derivative [Line Items] |  |
Notional amounts at January 1 |  | 271,000,000
New contracts |  | 0
Matured, expired or settled contracts |  | (271,000,000)
Notional amounts at March 31 |  | $ 0

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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 Matured, expired or settled derivative contracts. + References No definition available. + Details
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- Details
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- Details
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- Details
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