Acquisitions - Sale of Business (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Sep. 30, 2025	Mar. 31, 2025
Business Combination [Line Items]
Net gain on dispositions of assets	$ 10		$ 5,290
Net proceeds from disposition of business, property and equipment	$ 1,436,530		20,490
Arrow Engine
Business Combination [Line Items]
Net gain on dispositions of assets		$ 100	5,300
Net proceeds from disposition of business, property and equipment			$ 21,000