Acquisition - Summary of Purchase Price (Detail) - USD ($)		12 Months Ended
	Feb. 01, 2019	Dec. 31, 2019
Acquisition Date [Line Items]
Total purchase price, net of cash and cash equivalents acquired		$ 988,600,000
Electro Scientific Industries Inc [Member]
Acquisition Date [Line Items]
Cash paid for outstanding shares	$ 1,032,700,000
Settlement of share-based compensation awards	30,600,000
Total purchase price	1,063,300,000
Less: cash and cash equivalents acquired	(44,100,000)
Total purchase price, net of cash and cash equivalents acquired	$ 1,019,200,000