Noncontrolling Interest in Operating Partnership and Other Noncontrolling Interests - Schedule of OP Unit Activity (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Noncontrolling Interest [Abstract]
OP Units redeemed for cash (in shares)	0	18,028
Cash paid for OP Units redeemed	$ 0	$ 3,504
OP Units issued in conjunction with acquisitions (in units)	1,674,748	711,037
Value of OP Units issued in conjunction with business combination and acquisitions		$ 249,470	$ 141,000