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Income Taxes (Income Tax Provisions Computed using Statutory U.S. Federal Rate) (Detail) - USD ($) $ in Thousands		12 Months Ended
	Jan. 01, 2018	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Income tax at statutory rate		$ 49,807	$ 29,347	$ 43,823
Lower rates on foreign operations		(16,210)	(12,738)	(21,777)
State income taxes		3,072	5,825	3,648
Impact of Tax Cuts and Jobs Act of 2017		0	0	103,878
Loss on investment in subsidiary		(25,688)	1,797	(48,903)
Gain on derivative		(23,252)	0	0
Permanent non-deductible items		(236)	469	5,976
Foreign tax provisions under GILTI		6,502	3,231	0
Other		(353)	4,947	1,462
(Benefit from) provision for income taxes		$ (6,358)	$ 32,878	$ 88,107
Income tax at statutory rate	21.00%	21.00%	21.00%	28.10%	35.00%
Lower rates on foreign operations		(6.80%)	(9.10%)	(13.90%)
State income taxes		1.30%	4.20%	2.30%
Impact of Tax Cuts and Jobs Act of 2017		0.00%	0.00%	66.50%
Loss on investment in subsidiary		(10.80%)	1.30%	(31.30%)
Gain on derivative		(9.80%)	0.00%	0.00%
Permanent non-deductible items		(0.10%)	0.30%	3.80%
Foreign tax provisions under GILTI		2.70%	2.30%	0.00%
Other		(0.10%)	3.50%	0.90%
(Benefit from) provision for income taxes		(2.70%)	23.50%	56.40%

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