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Revenues (Tables) | 9 Months Ended
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Jun. 30, 2020
Revenues [Abstract] |
Revenue from External Customers by Products and Services [Table Text Block] | Revenues consist of:
| Three Months Ended June 30, |  |  |  | Nine Months Ended June 30, |  |
| 2020 |  | 2019 |  | 2020 |  | 2019
| (In millions) |  |  |  |  |  |
Residential lot sales | $ | 164.4 |  |  | $ | 87.6 |  |  | $ | 537.9 |  |  | $ | 171.6 |
Residential tract sales | 13.4 |  |  | — |  |  | 43.5 |  |  | — |
Commercial tract sales | — |  |  | — |  |  | 2.5 |  |  | 18.5 |
Other | 0.1 |  |  | 0.6 |  |  | 0.4 |  |  | 1.9 |
| $ | 177.9 |  |  | $ | 88.2 |  |  | $ | 584.3 |  |  | $ | 192.0 |

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- Definition Tabular disclosure of entity-wide revenues from external customers for each product or service or each group of similar products or services if the information is not provided as part of the reportable operating segment information. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9031-108599 + Details
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