Acquisition - Allocation of Acquired Intangible Assets and Liabilities Related Estimates of Useful Lives (Detail) - USD ($) $ in Millions			12 Months Ended
	Jul. 15, 2021	Feb. 01, 2019	Dec. 31, 2021
Photon Control Inc [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Acquired intangible assets, purchase price	$ 121.2		$ 121.2
Photon Control Inc [Member] | Completed Technology [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Acquired intangible assets, purchase price	$ 110.0		110.0
Acquired intangible assets, estimated useful lives	9 years
Photon Control Inc [Member] | Customer Relationships [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Acquired intangible assets, purchase price	$ 9.4		$ 9.4
Acquired intangible assets, estimated useful lives	10 years
Photon Control Inc [Member] | Trade Names [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Acquired intangible assets, purchase price	$ 0.2
Acquired intangible assets, estimated useful lives	6 months
Photon Control Inc [Member] | Backlog [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Acquired intangible assets, purchase price	$ 1.6
Acquired intangible assets, estimated useful lives	1 year 6 months
Electro Scientific Industries Inc [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Acquired intangible assets, purchase price		$ 316.2
Electro Scientific Industries Inc [Member] | Completed Technology [Member] | Lasers Products [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Acquired intangible assets, purchase price		$ 255.7
Acquired intangible assets, estimated useful lives		12 years
Electro Scientific Industries Inc [Member] | Completed Technology [Member] | Non Laser Products [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Acquired intangible assets, purchase price		$ 18.3
Acquired intangible assets, estimated useful lives		10 years
Electro Scientific Industries Inc [Member] | Customer Relationships [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Acquired intangible assets, purchase price		$ 25.4
Acquired intangible assets, estimated useful lives		10 years
Electro Scientific Industries Inc [Member] | Backlog [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Acquired intangible assets, purchase price		$ 2.4
Acquired intangible assets, estimated useful lives		1 year
Electro Scientific Industries Inc [Member] | Trademarks and Trade Names [Member]
Acquired Finite Lived Intangible Assets [Line Items]
Acquired intangible assets, purchase price		$ 14.4
Acquired intangible assets, estimated useful lives		7 years