| Document and Entity Information | May 16, 2024 |
| Document And Entity Information [Line Items] | |
| Entity Registrant Name | SCHWAB CHARLES CORP |
| Amendment Flag | false |
| Entity Central Index Key | 0000316709 |
| Document Type | 8-K |
| Document Period End Date | May 16, 2024 |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 1-9700 |
| 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 |
| Written Communications | false |
| Soliciting Material | true |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Common Stock [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Common Stock - $.01 par value per share |
| Trading Symbol | SCHW |
| Security Exchange Name | NYSE |
| Depositary Shares Each Representing A 140th Ownership Interest In A Share Of 5.95 Not Cumulative Preferred Stock Series D 2 [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | 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 140th Ownership Interest In A Share Of 4.450 Not Cumulative Preferred Stock Series J 1 [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | 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 |
