Share-Based Compensation - Expense by Award Type (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	$ 28,079	$ 19,260	$ 43,581	$ 35,420
Stock options and cash-based stock appreciation rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	5,414	2,989	7,334	4,659
Restricted share awards and cash-based restricted share unit awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	15,773	12,871	25,883	25,602
Performance share awards and cash-based performance share unit awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	$ 6,892	$ 3,400	$ 10,364	$ 5,159