Consolidated Balance Sheets Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2023	Sep. 30, 2022
Statement of Financial Position [Abstract]
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized (in shares)	1,000,000,000	1,000,000,000
Common stock, issued (in shares)	123,944,000	123,411,000
Common stock, outstanding (in shares)	122,280,000	121,747,000
Treasury stock (in shares)	1,664,000	1,664,000