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Disclosure - Securities Available for Sale and Securities Held to Maturity (Available For Sale Securities with Unrealized Losses, Aggregated by Category and Period of Continuous Unrealized Loss) (Details) link:presentationLink link:calculationLink link:definitionLink 40305 - Disclosure - Securities Available for Sale and Securities Held to Maturity (Held To Maturity Securities with Unrealized Losses, Aggregated by Category and Period of Continuous Unrealized Loss) (Details) link:presentationLink link:calculationLink link:definitionLink 40306 - Disclosure - Securities Available for Sale and Securities Held to Maturity (Securities with Unrealized Losses, Aggregated by Category and Period of Continuous Unrealized Loss) (Details) link:presentationLink link:calculationLink link:definitionLink 40308 - Disclosure - Securities Available for Sale and Securities Held to Maturity (Maturities of Securities Available for Sale) (Details) link:presentationLink link:calculationLink link:definitionLink 40309 - 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Disclosure - Loans to Banking Clients and Related Allowance for Loan Losses (Tables) link:presentationLink link:calculationLink link:definitionLink 30603 - Disclosure - Fair Values of Assets and Liabilities (Tables) link:presentationLink link:calculationLink link:definitionLink 30703 - Disclosure - Accumulated Other Comprehensive Income (Tables) link:presentationLink link:calculationLink link:definitionLink 30803 - Disclosure - Earnings Per Common Share (Tables) link:presentationLink link:calculationLink link:definitionLink 30903 - Disclosure - Regulatory Requirements (Tables) link:presentationLink link:calculationLink link:definitionLink 31003 - Disclosure - Segment Information (Tables) link:presentationLink link:calculationLink link:definitionLink 40101 - Disclosure - Introduction and Basis of Presentation (Details) link:presentationLink link:calculationLink link:definitionLink 40301 - Disclosure - Securities Available for Sale and Securities Held to Maturity (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 40307 - Disclosure - Securities Available for Sale and Securities Held to Maturity (Rollforward Amount of Credit Losses Recognized in Earnings for OTTI Securities for Portion of Impairment Recognized in or Reclassified From Other Comprehensive Income) (Details) link:presentationLink link:calculationLink link:definitionLink 40310 - Disclosure - Securities Available for Sale and Securities Held to Maturity (Proceeds and Gross Realized Gains from Sales of Securities Available for Sale) (Details) link:presentationLink link:calculationLink link:definitionLink 40401 - Disclosure - Loans to Banking Clients and Related Allowance for Loan Losses (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 40403 - Disclosure - Loans to Banking Clients and Related Allowance for Loan Losses (Changes in Allowance for Loan Losses) (Details) link:presentationLink link:calculationLink link:definitionLink 40405 - Disclosure - Loans to Banking Clients and Related Allowance for Loan Losses (Credit Quality of Residential Real Estate Mortgages and HELOCs by Reviewing FICO Scores at Origination, Current FICO Scores, Loan-To-Value Ratio) (Details) link:presentationLink link:calculationLink link:definitionLink 40501 - 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Disclosure - Segment Information (Financial Information for Reportable Segments) (Details) link:presentationLink link:calculationLink link:definitionLink