Regulatory Requirements (Net Capital and Net Capital Requirements for Schwab and optionsXpress, Inc) (Details) (USD $)	Jun. 30, 2013
Schwab [Member]
Compliance with Regulatory Capital Requirements for Broker Dealers [Line Items]
Net Capital	$ 1,334,000,000
% of Aggregate Debit Balances	10.00%
Minimum Net Capital Required	250,000
2% of Aggregate Debit Balances	280,000,000
Net Capital in Excess of Required Net Capital	1,054,000,000
Net Capital in Excess of 5% of Aggregate Debit Balances	634,000,000
OptionsXpress, Inc. [Member]
Compliance with Regulatory Capital Requirements for Broker Dealers [Line Items]
Net Capital	92,000,000
% of Aggregate Debit Balances	27.00%
Minimum Net Capital Required	1,000,000
2% of Aggregate Debit Balances	7,000,000
Net Capital in Excess of Required Net Capital	85,000,000
Net Capital in Excess of 5% of Aggregate Debit Balances	$ 75,000,000