Revenues from Contracts with Customers (Detail Textual) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Change In Accounting Estimate [Line Items]
Income before income taxes	$ 116,272	$ 142,484	$ 346,001	$ 399,380
Diluted earnings per share	$ 4.04	$ 4.78	$ 11.56	$ 12.66
EAC Adjustments
Change In Accounting Estimate [Line Items]
Income before income taxes	$ 13,000	$ 10,700	$ 21,200	$ 36,600
Diluted earnings per share	$ 0.40	$ 0.31	$ 0.66	$ 1.06
Revenue from previously satisfied performance obligations		$ 700		$ 2,300