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v3.20.1

Commitments and Contingencies - Legal Claims and Insurance (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2020 | Mar. 31, 2019 | Mar. 31, 2020 | Mar. 31, 2019
Rollforward of reserves for legal claims |  |  |  |
Reserves for legal claims, beginning of period |  |  | $ 434.7 | $ 408.1
Increase in reserves |  |  | 33.6 | 23.3
Payments |  |  | (26.1) | (12.3)
Reserves for legal claims, end of period | $ 442.2 | $ 419.1 | 442.2 | 419.1
Forestar Group [Member] |  |  |  |
Rollforward of reserves for legal claims |  |  |  |
Increase (Decrease) in Prepaid Expenses, Other | $ 8.2 | $ 0.7 | $ 13.3 | $ 3.7

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