XML 126 R106.htm IDEA: XBRL DOCUMENT v3.22.0.1
Variable Interest Entities Variabile Interest Entities - Carry Value of Secured Notes from LSNI (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Long-term debt $ 2,230 $ 2,739
Ambac [Member]    
Carry Value Secured Notes from LSNI   465
Ambac Assurance Corporation [Member]    
Long-term debt 2,230 2,739
Ambac Note Post Exit From Rehabilitation [Member] | Ambac Assurance Corporation [Member]    
Long-term debt $ 0 $ 1,641