Share-Based Compensation - Share-Based Compensation, Cash-Based Awards and Related Tax Benefit Recognized in Condensed Consolidated Statements of Operations (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 27, 2021	Mar. 28, 2020	Mar. 27, 2021	Mar. 28, 2020
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total	$ 25.1	$ 17.9	$ 70.0	$ 44.2
Income tax benefit on share-based compensation	(2.5)	(1.8)	(11.5)	(4.5)
Phantom Stock Unit [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total	8.8	4.1	20.2	7.1
Cost of Revenue [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total	0.8	0.8	2.6	2.1
Cost of Revenue [Member] | Phantom Stock Unit [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total	0.1	0.1	0.3	0.2
Research and Development [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total	12.9	9.0	33.4	24.6
Research and Development [Member] | Phantom Stock Unit [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total	7.2	3.3	16.4	5.8
Selling, General, and Administrative [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total	11.4	8.1	34.0	17.5
Selling, General, and Administrative [Member] | Phantom Stock Unit [Member]
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total	$ 1.5	$ 0.7	$ 3.5	$ 1.1