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v3.8.0.1

Investment in Unconsolidated Entities - Condensed Financial Information of Unconsolidated Entities (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
Assets: |  |
Assets | $ 203.7 |
Liabilities and Equity: |  |
Debt | 85.1 |
Equity | 105.5 |
Liabilities and Equity | 203.7 |
Revenues | 8.7 |
Net earnings of unconsolidated entities (1) | 17.4 |
Equity in earnings of unconsolidated entities | 2.3 | $ 0.0
Forestar Group [Member] |  |
Liabilities and Equity: |  |
Equity in earnings of unconsolidated entities | 7.6 |
Accounts Payable [Member] |  |
Liabilities and Equity: |  |
Accounts payable and other liabilities | 13.1 |
Cash and Cash Equivalents [Member] |  |
Assets: |  |
Current assets | 13.1 |
Inventories [Member] |  |
Assets: |  |
Current assets | 168.9 |
Other Assets [Member] |  |
Assets: |  |
Current assets | $ 21.7 |

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