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Contingencies - Narrative (Details)
$ in Millions
Jun. 30, 2023
USD ($)
case
loan
Jun. 30, 2022
USD ($)
loan
Mar. 04, 2021
count
Loss Contingency [Abstract]      
Accrued penalty $ 10.2    
Number of cases | case 5    
Number of counts granted summary judgement | count     9
Warranty repurchase demands unpaid principal balance $ 39.1 $ 51.9  
Warranty repurchase demands number of loans | loan 142 270