Debt - Summary of Variable Funding Lines (Details) - USD ($)	Dec. 31, 2021	Sep. 17, 2021	Sep. 16, 2021	Dec. 31, 2020
Homes
Debt Instrument [Line Items]
Carrying Value	$ 3,400,000,000			$ 361,200,000
Credit Suisse AG, Cayman Islands
Debt Instrument [Line Items]
Maximum Borrowing Capacity		$ 1,500,000,000	$ 500,000,000
Variable funding line | Credit Suisse AG, Cayman Islands | Line of Credit
Debt Instrument [Line Items]
Maximum Borrowing Capacity	140,000,000
Variable funding line | Credit Suisse AG, Cayman Islands | Line of Credit | Homes
Debt Instrument [Line Items]
Carrying Value	46,039,000
2021-1 variable funding line | Credit Suisse AG, Cayman Islands | Line of Credit
Debt Instrument [Line Items]
Maximum Borrowing Capacity	$ 65,000,000
Weighted Average Interest Rate	2.84%
2021-1 variable funding line | Credit Suisse AG, Cayman Islands | Line of Credit | Homes
Debt Instrument [Line Items]
Carrying Value	$ 16,846,000			0
2021-2 variable funding line | Credit Suisse AG, Cayman Islands | Line of Credit
Debt Instrument [Line Items]
Maximum Borrowing Capacity	$ 75,000,000
Weighted Average Interest Rate	2.84%
2021-2 variable funding line | Credit Suisse AG, Cayman Islands | Line of Credit | Homes
Debt Instrument [Line Items]
Carrying Value	$ 29,193,000			$ 0