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Derivatives - Summary of Primary Net Hedging Positions and Corresponding Fair Values (Detail) - Foreign Exchange Forward Contracts [Member] - USD ($) $ in Millions | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Derivative [Line Items] |  |
Currency Hedged (Buy/Sell), Gross Notional Value, Net | $ 521.6 | $ 176.2
Currency Hedged (Buy/Sell), Fair Value, (Liability)/Asset, Net | (7.6) | (6.5)
U.S. Dollar/Japanese Yen [Member] |  |
Derivative [Line Items] |  |
Currency Hedged (Buy/Sell), Gross Notional Value, Net | 61.0 | 61.5
Currency Hedged (Buy/Sell), Fair Value, (Liability)/Asset, Net | 1.3 | (1.1)
U.S. Dollar/South Korean Won [Member] |  |
Derivative [Line Items] |  |
Currency Hedged (Buy/Sell), Gross Notional Value, Net | 75.8 | 62.2
Currency Hedged (Buy/Sell), Fair Value, (Liability)/Asset, Net | (0.6) | (3.1)
U.S. Dollar/Euro [Member] |  |
Derivative [Line Items] |  |
Currency Hedged (Buy/Sell), Gross Notional Value, Net | 13.2 | 13.1
Currency Hedged (Buy/Sell), Fair Value, (Liability)/Asset, Net | (0.1) | (0.6)
U.S. Dollar/U.K. Pound Sterling [Member] |  |
Derivative [Line Items] |  |
Currency Hedged (Buy/Sell), Gross Notional Value, Net | 7.1 | 6.1
Currency Hedged (Buy/Sell), Fair Value, (Liability)/Asset, Net | (0.2) | (0.3)
U.S. Dollar/Taiwan Dollar [Member] |  |
Derivative [Line Items] |  |
Currency Hedged (Buy/Sell), Gross Notional Value, Net | 52.0 | 33.3
Currency Hedged (Buy/Sell), Fair Value, (Liability)/Asset, Net | (0.5) | $ (1.4)
Canadian Dollar/ U.S. Dollar [Member] |  |
Derivative [Line Items] |  |
Currency Hedged (Buy/Sell), Gross Notional Value, Net | 312.5 |
Currency Hedged (Buy/Sell), Fair Value, (Liability)/Asset, Net | $ (7.5) |

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