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Goodwill and Intangible Assets - Intangible Assets (Parenthetical) (Detail) - USD ($) $ in Millions |  | 12 Months Ended |
--- | --- | --- | ---
Feb. 01, 2019 | Dec. 31, 2019 | Jun. 30, 2020
Finite-Lived Intangible Assets [Line Items] |  |  |
Accumulated Amortization |  | $ 308.0 | $ 338.1
Customer Relationships [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Accumulated Amortization |  | 84.2 | 94.4
Patents, Trademarks, Trade Names and Other [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Accumulated Amortization |  | 45.5 | $ 47.0
Electro Scientific Industries Inc [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Acquired intangible assets, purchase price | $ 316.2 | 316.2 |
Finite lived intangible asset , gross favorable lease |  | 6.4 |
Electro Scientific Industries Inc [Member] | Completed Technology [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Acquired intangible assets, purchase price |  | 274.0 |
Electro Scientific Industries Inc [Member] | Customer Relationships [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Acquired intangible assets, purchase price | $ 25.4 | 25.4 |
Electro Scientific Industries Inc [Member] | Trademarks Tradenames and Backlog [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Acquired intangible assets, purchase price |  | 16.8 |
Electro Scientific Industries Inc [Member] | Patents, Trademarks, Trade Names and Other [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Accumulated Amortization |  | $ 3.4 |

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