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Financial Instruments and Fair Value Measurements - Summary of Activity in Interest Rate Swaps (Detail) - USD ($) | 3 Months Ended
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Mar. 31, 2021 | Mar. 31, 2020
Derivative [Line Items] |  |  |
Notional amounts at March 31 |  |  | $ 750,000,000.0
Interest Rate Swap [Member] | Cash Flow Hedges [Member] | Designated As Hedging Instrument [Member] |  |  |
Derivative [Line Items] |  |  |
Notional amounts at January 1 | $ 415,000 |  | 0
New contracts | 0 |  | 915,000
Matured, expired or settled contracts | 0 |  | (750,000)
Notional amounts at March 31 | 415,000 |  | 165,000
Interest Rate Swap [Member] | EUR | Cash Flow Hedges [Member] | Designated As Hedging Instrument [Member] |  |  |
Derivative [Line Items] |  |  |
Notional amounts at January 1 | 165,000 | [1] | 0
New contracts | 0 | [1] | 165,000
Matured, expired or settled contracts | 0 | [1] | 0
Notional amounts at March 31 | 165,000 | [1] | 165,000
Interest Rate Swap [Member] | USD | Cash Flow Hedges [Member] | Designated As Hedging Instrument [Member] |  |  |
Derivative [Line Items] |  |  |
Notional amounts at January 1 | 250,000 | [1] | 0
New contracts | 0 | [1] | 750,000
Matured, expired or settled contracts | 0 | [1] | (750,000)
Notional amounts at March 31 | $ 250,000 | [1] | $ 0
[1] | During the year ended December 31, 2020, we entered into interest rate swap contracts to effectively fix the interest rate on our euro senior notes issued in February 2020 and the U.S. dollar outstanding balance on our 2017 Term Loan. In April 2021, the 2017 Term Loan was terminated and the interest rate swap contracts associated with the outstanding balance were settled.

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