Capitalized Interest (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|
Jun. 30, 2023 |
Jun. 30, 2022 |
Jun. 30, 2023 |
Jun. 30, 2022 |
Mar. 31, 2023 |
Sep. 30, 2022 |
Mar. 31, 2022 |
Sep. 30, 2021 |
|
| Statement [Line Items] | ||||||||
| Real Estate Inventory, Capitalized Interest Costs | $ 60.5 | $ 51.7 | $ 60.5 | $ 51.7 | $ 58.8 | $ 52.5 | $ 50.6 | $ 53.7 |
| Interest incurred | 8.2 | 8.3 | 24.6 | 24.7 | ||||
| Interest charged to cost of sales | $ (6.5) | $ (7.2) | $ (16.6) | $ (26.7) | ||||