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Share Repurchase (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018	Feb. 04, 2020	Nov. 08, 2018
Equity, Class of Treasury Stock [Line Items]
Total number of share repurchases	3,838,275	5,306,203
Total cost of share repurchases	$ 136,889	$ 252,852	$ 137,028
Average price paid per share	$ 35.66	$ 47.65
Life-to-Date Current Shares Repurchase Program Total number of share repurchases	6,383,431
Life-to-Date Current Shares Repurchase Program Total cost of share repurchases	$ 254,769
Life-to-Date Current Shares Repurchase Program Average price paid per share	$ 39.91
Authorized On February Fourth Two-Thousand Twenty [Member]
Equity, Class of Treasury Stock [Line Items]
Remaining authorized amount for repurchase				$ 300,000
Maximum
Equity, Class of Treasury Stock [Line Items]
Remaining authorized amount for repurchase	$ 345,200
Maximum | Authorized On November Eighth Two-Thousand Twenty [Member]
Equity, Class of Treasury Stock [Line Items]
Authorized amount for repurchase					$ 300,000

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