Share-Based Compensation - Expense by Award Type (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	$ 16,737	$ 14,380	$ 60,318	$ 49,800
Stock options and cash-based stock appreciation rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	1,328	2,154	8,662	6,813
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	12,089	10,327	37,972	35,929
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	$ 3,320	$ 1,899	$ 13,684	$ 7,058