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+ Details

Regulatory Requirements - Narrative (Details) - USD ($) $ in Millions	Jan. 05, 2026	Dec. 31, 2025	Dec. 31, 2024
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total assets		$ 490,995	$ 479,843
Charles Schwab Premier Bank, SSB
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total assets		27,000	26,500
Charles Schwab Trust Bank
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total assets		10,400	10,100
Charles Schwab & Co., Inc.
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Cash and investments required to be segregated and on deposit for regulatory purposes		$ 46,400	$ 38,200
Charles Schwab & Co., Inc. \| Reserve Deposit \| Subsequent Event
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Net amount of segregated cash deposited into segregated reserve bank accounts	$ 5,300