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Basis of Presentation (Details) - USD ($) $ in Millions | 3 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2019 | Jun. 30, 2020 | Oct. 01, 2019 | Sep. 30, 2019
Entity Information [Line Items] |  |  |  |
Operating Lease, Right-of-Use Asset |  | $ 35.5 | $ 39.0 | $ 0.0
Noncontrolling Interest, Ownership Percentage by Parent |  | 65.00% |  |
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners |  | 35.00% |  |
Operating Lease, Liability |  | $ 38.1 | $ 40.3 | $ 0.0
Assets Leased to Others [Member] | Single Family [Member] |  |  |  |
Entity Information [Line Items] |  |  |  |
Prior Period Reclassification Adjustment | $ 37.0 |  |  |

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