Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2024	Sep. 30, 2023
Statement of Financial Position [Abstract]
Property and equipment, accumulated depreciation (in dollars)	$ 855,058	$ 780,212
Intangible assets, excluding goodwill, accumulated amortization (in dollars)	$ 32,435	$ 30,587
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, Authorized shares	500,000,000	500,000,000
Common stock, shares issued	102,643,000	106,266,000
Common stock, shares outstanding	102,643,000	106,266,000
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, Authorized shares	50,000,000	50,000,000
Preferred stock, shares issued	0	0