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Investments In Unconsolidated Entities (Narrative) (Details) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Nov. 30, 2021 USD ($) property | Dec. 01, 2021 USD ($) | Nov. 30, 2020 USD ($)
Upward America Venture |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Equity Method Investment , Total Equity Commitments | $ 125.0 |  |
Number of Homes Delivered | property | 1,457 |  |
Homebuilding |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Debt | $ 1,200.0 |  | $ 1,100.0
Maximum recourse exposure | 5.3 |  | 4.9
Unconsolidated entities non-recourse debt with completion guarantees | 241.0 |  | 183.3
Multifamily |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Unconsolidated entities non-recourse debt with completion guarantees | 855.2 |  | $ 722.9
Upward America Venture |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Equity Method Investment , Total Equity Commitments | $ 1,250.0 |  |
Upward America Venture | Subsequent Event |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Equity Method Investment , Total Equity Commitments |  | $ 1,600.0 |

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