Subsequent Events (Details) $ in Millions	Jan. 31, 2023 USD ($) employee	Aug. 31, 2022 USD ($)
Primary Beneficiary | Revolving Credit Facility | UAWT Warehouse Credit Facility
Subsequent Event [Line Items]
Maximum borrowing capacity		$ 200
Subsequent Event | Employee Severance | January 2023 Plan
Subsequent Event [Line Items]
Expected reduction in workforce, percent	20.00%
Expected reduction in workforce, number of employees | employee	365
Expected restructuring cost	$ 15
Subsequent Event | Reversal of Previously Expensed Stock Based Compensation Cost | Employee Severance | January 2023 Plan
Subsequent Event [Line Items]
Expected non-cash savings	3
Subsequent Event | Reduced Employee Expenses | Employee Severance | January 2023 Plan
Subsequent Event [Line Items]
Expected cash savings	$ 57
Initial period in which effects are expected to be realized	12 months
Subsequent Event | Reduced Stock Based Compensation Expense | Employee Severance | January 2023 Plan
Subsequent Event [Line Items]
Expected non-cash savings	$ 42
Subsequent Event | Primary Beneficiary | Revolving Credit Facility | UAWT Warehouse Credit Facility
Subsequent Event [Line Items]
Maximum borrowing capacity	$ 200
Maximum advance rate	80.00%
Subsequent Event | Primary Beneficiary | Revolving Credit Facility | UAWT Warehouse Credit Facility | Minimum | UAWT Benchmark Rate
Subsequent Event [Line Items]
Basis spread on variable rate	3.00%
Subsequent Event | Primary Beneficiary | Revolving Credit Facility | UAWT Warehouse Credit Facility | Maximum | UAWT Benchmark Rate
Subsequent Event [Line Items]
Basis spread on variable rate	4.00%