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Commitments and Contingencies - Narrative (Details)
$ in Millions
12 Months Ended
Dec. 31, 2022
USD ($)
lot
singleFamilyProperty
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Commitments and contingencies      
Number of real estate properties held-for-sale in escrow | singleFamilyProperty 237    
Number of land lots held-for-sale in escrow | lot 50,000    
Expected proceeds from sale of property held-for-sale $ 73.8    
Company contributions 3.1 $ 2.5 $ 2.0
Surety Bond      
Commitments and contingencies      
Current carrying value 185.3    
Single Family      
Commitments and contingencies      
Third party development agreements and land 12.3    
Land      
Commitments and contingencies      
Third party development agreements and land $ 228.9    
Commitment to acquire properties      
Commitments and contingencies      
Number of properties | singleFamilyProperty 52    
Minimum      
Commitments and contingencies      
Operating leases have remaining lease terms 1 year    
Maximum      
Commitments and contingencies      
Operating leases have remaining lease terms 9 years