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Insurance Contracts (Details) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 06, 2022
Insurance [Abstract]    
Amount of PRHTA Insured Exposure Fully Satisfied   $ 4
Amount of PRHTA Net Par Exposure Fully Satisfied   $ 83
Insurance [Line Items]    
Percent of PRHTA Net Par Exposure Fully Satisfied   21.00%
Amount of Net Par Exposure Put in Trust and Consolidated by Ambac $ 178 $ 312