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Cover Page - USD ($)
$ in Billions
 12 Months Ended
Dec. 31, 2023
Jan. 31, 2024
Jun. 30, 2023
Entity Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2023    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 1-9700    
Entity Registrant Name SCHWAB CHARLES CORP    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 94-3025021    
Entity Address, Address Line One 3000 Schwab Way    
Entity Address, City or Town Westlake    
Entity Address, State or Province TX    
Entity Address, Postal Zip Code 76262    
City Area Code 817    
Local Phone Number 859-5000    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 94.1
Documents Incorporated by Reference
Part III of this Form 10-K incorporates certain information contained in the registrant’s definitive proxy statement for its annual meeting of stockholders, to be held May 23, 2024, by reference to that document.
    
Amendment Flag false    
Document Fiscal Year Focus 2023    
Document Fiscal Period Focus FY    
Entity Central Index Key 0000316709    
Common Stock – $.01 par value per share      
Entity Information [Line Items]      
Title of 12(b) Security Common Stock – $.01 par value per share    
Trading Symbol SCHW    
Security Exchange Name NYSE    
Entity Common Stock, Shares Outstanding (shares)   1,773,475,323  
Depositary Shares, each representing a 1/40th ownership interest in a share of 5.95% Non-Cumulative Preferred Stock, Series D      
Entity Information [Line Items]      
Title of 12(b) Security Depositary Shares, each representing a 1/40th ownership interest in a share of 5.95% Non-Cumulative Preferred Stock, Series D    
Trading Symbol SCHW PrD    
Security Exchange Name NYSE    
Depositary Shares, each representing a 1/40th ownership interest in a share of 4.450% Non-Cumulative Preferred Stock, Series J      
Entity Information [Line Items]      
Title of 12(b) Security Depositary Shares, each representing a 1/40th ownership interest in a share of 4.450% Non-Cumulative Preferred Stock, Series J    
Trading Symbol SCHW PrJ    
Security Exchange Name NYSE    
Nonvoting Common Stock      
Entity Information [Line Items]      
Entity Common Stock, Shares Outstanding (shares)   50,893,695