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Net Capital and Net Capital Requirements for Schwab and optionsXpress, Inc (Detail) (USD $)
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Mar. 31, 2013
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|---|---|
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Schwab
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|
| Compliance with Regulatory Capital Requirements for Broker Dealers [Line Items] | |
| Net Capital | $ 1,386,000,000 |
| % of Aggregate Debit Balances | 10.00% |
| Minimum Net Capital Required | 250,000 |
| 2% of Aggregate Debit Balances | 275,000,000 |
| Net Capital in Excess of Required Net Capital | 1,111,000,000 |
| Net Capital in Excess of 5% of Aggregate Debit Balances | 700,000,000 |
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OptionsXpress, Inc.
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|
| Compliance with Regulatory Capital Requirements for Broker Dealers [Line Items] | |
| Net Capital | 89,000,000 |
| % of Aggregate Debit Balances | 31.00% |
| Minimum Net Capital Required | 1,000,000 |
| 2% of Aggregate Debit Balances | 6,000,000 |
| Net Capital in Excess of Required Net Capital | 83,000,000 |
| Net Capital in Excess of 5% of Aggregate Debit Balances | $ 75,000,000 |