Restructuring Charges (Separation and Restructuring Plan Activity) (Detail) - USD ($) $ in Thousands		9 Months Ended	12 Months Ended
	Jul. 01, 2019	Mar. 31, 2020	Jun. 30, 2019
Restructuring Cost and Reserve [Line Items]
Liability beginning balance	$ 25,083	$ 25,083	$ 38,927
Increase in liability (separation and other charges)		3,551	8,870
Reduction in liability (payments and adjustments)		(3,331)	(22,714)
Liability ending balance	53	$ 273	$ 25,083
ASC 842
Restructuring Cost and Reserve [Line Items]
Reduction in liability from ASU implementation	$ (25,030)