XML 100 R89.htm IDEA: XBRL DOCUMENT v3.25.3
Regulatory Requirements - Narrative (Details) - USD ($)
$ in Millions
Sep. 30, 2025
Dec. 31, 2024
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Total assets $ 465,255 $ 479,843
Charles Schwab Premier Bank, SSB    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Total assets 25,100  
Charles Schwab Trust Bank    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Total assets $ 9,700