v3.25.4
Financial Instruments Subject to Off-Balance Sheet Credit Risk - Offsetting Assets and Liabilities (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Resale agreements    
Gross Assets $ 16,901,000 $ 10,075,000
Gross Amounts Offset in the Consolidated Balance Sheets 0 0
Net Amounts Presented in the Consolidated Balance Sheets 16,901,000 10,075,000
Counterparty Offsetting 0 0
Collateral (16,901,000) (10,075,000)
Net Amount 0 0
Securities borrowed    
Gross Assets 4,797,000 695,000
Gross Amounts Offset in the Consolidated Balance Sheets 0 0
Net Amounts Presented in the Consolidated Balance Sheets 4,797,000 695,000
Counterparty Offsetting (3,069,000) (617,000)
Collateral (1,677,000) (77,000)
Net Amount 51,000 1,000
Interest rate swaps    
Total Gross Assets 21,699,000 10,770,000
Gross Amounts Offset in the Consolidated Balance Sheets 0 0
Net Amounts Presented in the Consolidated Balance Sheets 21,699,000 10,770,000
Counterparty Offsetting (3,069,000) (617,000)
Collateral (18,578,000) (10,152,000)
Net Amount 52,000 1,000
Repurchase agreements    
Gross Liabilities 1,301,000 5,499,000
Gross Amounts Offset in the Consolidated Balance Sheets 0 0
Net Amounts Presented in the Consolidated Balance Sheets 1,301,000 5,499,000
Counterparty Offsetting 0 0
Collateral (1,301,000) (5,499,000)
Net Amount 0 0
Securities loaned    
Gross Liabilities 25,131,000 13,068,000
Gross Amounts Offset in the Consolidated Balance Sheets 0 0
Net Amounts Presented in the Consolidated Balance Sheets 25,131,000 13,068,000
Counterparty Offsetting (3,069,000) (617,000)
Collateral (21,137,000) (11,795,000)
Net Amount 925,000 656,000
Secured short-term borrowings    
Other short-term borrowings 6,913,000 5,999,000
Interest rate swaps    
Total Gross Liabilities 30,233,000 19,067,000
Gross Amounts Offset in the Consolidated Balance Sheets 0 0
Net Amounts Presented in the Consolidated Balance Sheets 30,233,000 19,067,000
Counterparty Offsetting (3,069,000) (617,000)
Collateral (26,238,000) (17,794,000)
Net Amount 926,000 656,000
Fair value of client securities available to be pledged 155,525,000 116,258,000
Available for sale securities 62,357,000 82,994,000
Securities loaned $ 25,131,000 $ 13,068,000
Charles Schwab & Co., Inc.    
Interest rate swaps    
Repurchase agreement maturities 35 days  
Minimum    
Interest rate swaps    
Remaining contractual maturities on securities loaned 35 days 35 days
Maximum    
Interest rate swaps    
Remaining contractual maturities on securities loaned 95 days 95 days
Maturity Overnight and on Demand    
Securities loaned    
Net Amounts Presented in the Consolidated Balance Sheets $ 15,000,000 $ 8,800,000
Interest rate swaps    
Securities loaned 15,000,000 8,800,000
Maturity 35 to 95 Days    
Securities loaned    
Net Amounts Presented in the Consolidated Balance Sheets 10,100,000 4,300,000
Interest rate swaps    
Securities loaned 10,100,000 4,300,000
Interest rate swaps    
Interest rate swaps    
Gross Assets 1,000 0
Gross Amounts Offset in the Consolidated Balance Sheets 0 0
Net Amounts Presented in the Consolidated Balance Sheets 1,000 0
Counterparty Offsetting 0 0
Collateral 0 0
Net Amount 1,000 0
Interest rate swaps    
Gross Liabilities 1,000 0
Gross Amounts Offset in the Consolidated Balance Sheets 0 0
Net Amounts Presented in the Consolidated Balance Sheets 1,000 0
Counterparty Offsetting 0 0
Collateral 0 0
Net Amount 1,000 0
Derivative asset less than stated amount   500
Derivative liability less than stated amount   500
Asset Pledged as Collateral    
Interest rate swaps    
Available for sale securities 281,000 378,000
Secured short-term borrowings    
Secured short-term borrowings    
Gross Liabilities 3,800,000 500,000
Gross Amounts Offset in the Consolidated Balance Sheets 0 0
Other short-term borrowings 3,800,000 500,000
Counterparty Offsetting 0 0
Collateral (3,800,000) (500,000)
Net Amount 0 0
Securities Sold under Agreements to Repurchase    
Interest rate swaps    
Fair value of collateral pledged in connection with repurchase agreements 1,300,000 5,900,000
Interest rate swaps | Asset Pledged as Collateral    
Interest rate swaps    
Available for sale securities 281,000 378,000
Resale And Repurchase Agreements    
Interest rate swaps    
Fair value of client securities available to be pledged $ 17,200,000 $ 10,300,000