XML 47 R38.htm IDEA: XBRL DOCUMENT v3.23.3
Letters of Credit (Details) - USD ($)
$ in Millions
Sep. 30, 2023
Dec. 31, 2022
Line of Credit Facility [Line Items]    
Amount outstanding at period end $ 0 $ 207
Letter of Credit    
Line of Credit Facility [Line Items]    
Direct advances on the credit facility outstanding $ 15 $ 15