Revenues and Contract Balances - Narrative (Details) - USD ($)	3 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Change In Accounting Estimate [Line Items]
Income before income taxes	$ 155,871,000	$ 111,778,000
Diluted earnings per share (in dollars per share)	$ 5.33	$ 3.76
EAC Adjustments
Change In Accounting Estimate [Line Items]
Income before income taxes	$ 3,700,000	$ 2,400,000
Diluted earnings per share (in dollars per share)	$ 0.12	$ 0.08
Revenue from previously satisfied performance obligations	$ 0	$ 0