CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
OPERATING ACTIVITIES
Net income	$ 46.8	$ 39.7	$ 94.5	$ 128.0
Adjustments:
Depreciation and amortization			2.3	2.0
Deferred income taxes			(2.8)	1.2
Equity in earnings of unconsolidated ventures	0.0	0.0	0.0	(1.1)
Stock-based compensation expense	0.9	0.8	3.4	2.8
Impairments and land option charges			23.6	7.0
Gain on sale of assets	0.0	2.7	1.6	3.2
Changes in operating assets and liabilities:
Decrease (increase) in real estate			87.7	(170.3)
Increase in other assets			(6.7)	(11.7)
(Decrease) increase in accounts payable and other accrued liabilities			(19.6)	29.8
(Decrease) increase in accrued development costs			(31.2)	6.5
Decrease in earnest money deposits on sales contracts			(13.4)	(1.2)
Net cash provided by (used in) operating activities			136.2	(10.2)
INVESTING ACTIVITIES
Expenditures for property, equipment, software and other			(0.8)	(3.2)
Return of investment in unconsolidated ventures			0.0	1.6
Proceeds from sale of assets			1.6	3.2
Net cash provided by investing activities			0.8	1.6
FINANCING ACTIVITIES
Issuance of common stock			0.0	1.7
Cash paid for shares withheld for taxes			(0.8)	(0.4)
Net cash (used in) provided by financing activities			(0.8)	1.3
Increase (decrease) in cash and cash equivalents			136.2	(7.3)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 401.0	$ 146.3	$ 401.0	$ 146.3