0000001 - Document - Cover link:presentationLink link:calculationLink link:definitionLink 0000002 - Document - Audit Information link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - Consolidated Balance Sheets link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - Consolidated Balance Sheets (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - Consolidated Statements of Comprehensive Income link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - Consolidated Statements of Comprehensive Income (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - Consolidated Statements of Stockholders' Equity link:presentationLink link:calculationLink link:definitionLink 9952156 - Statement - Consolidated Statements of Stockholders' Equity (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952157 - Statement - Consolidated Statements of Cash Flows link:presentationLink link:calculationLink link:definitionLink 9952158 - Disclosure - Description of Business and Summary of Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - New Accounting Standards link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - Earnings per Common Share link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - Revenues link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - Accounts Receivable and Allowance for Expected Credit Losses link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - Special Charges link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - Share-Based Compensation link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - Interest Income and Other link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - Balance Sheet Details link:presentationLink link:calculationLink link:definitionLink 9952167 - Disclosure - Property and Equipment link:presentationLink link:calculationLink link:definitionLink 9952168 - Disclosure - Goodwill and Intangible Assets link:presentationLink link:calculationLink link:definitionLink 9952169 - Disclosure - Notes Receivable from Employees link:presentationLink link:calculationLink link:definitionLink 9952170 - Disclosure - Debt link:presentationLink link:calculationLink link:definitionLink 9952171 - Disclosure - Leases link:presentationLink link:calculationLink link:definitionLink 9952172 - Disclosure - Commitments and Contingencies link:presentationLink link:calculationLink link:definitionLink 9952173 - Disclosure - Income Taxes link:presentationLink link:calculationLink link:definitionLink 9952174 - Disclosure - Stockholders' Equity link:presentationLink link:calculationLink link:definitionLink 9952175 - Disclosure - Employee Benefit Plans link:presentationLink link:calculationLink link:definitionLink 9952176 - Disclosure - Segment Reporting link:presentationLink link:calculationLink link:definitionLink 9955511 - Disclosure - Description of Business and Summary of Significant Accounting Policies (Policies) link:presentationLink link:calculationLink link:definitionLink 9955512 - Disclosure - Earnings per Common Share (Tables) link:presentationLink link:calculationLink link:definitionLink 9955513 - Disclosure - Accounts Receivable and Allowance for Expected Credit Losses (Tables) link:presentationLink link:calculationLink link:definitionLink 9955514 - Disclosure - Special Charges (Tables) link:presentationLink link:calculationLink link:definitionLink 9955515 - Disclosure - Share-Based Compensation (Tables) link:presentationLink link:calculationLink link:definitionLink 9955516 - Disclosure - Interest Income and Other (Tables) link:presentationLink link:calculationLink link:definitionLink 9955517 - Disclosure - Balance Sheet Details (Tables) link:presentationLink link:calculationLink link:definitionLink 9955518 - Disclosure - Property and Equipment (Tables) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - Goodwill and Intangible Assets (Tables) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - Notes Receivable from Employees (Tables) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - Leases (Tables) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - Income Taxes (Tables) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - Stockholders' Equity (Tables) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - Segment Reporting (Tables) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - Description of Business and Summary of Significant Accounting Policies (Details) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - Earnings per Common Share (Details) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - Revenues (Details) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - Revenues (Details) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - Accounts Receivable and Allowance for Expected Credit Losses - Accounts Receivable, Net (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - Accounts Receivable and Allowance for Expected Credit Losses - Accounts Receivable, Writeoff (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - Special Charges - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - Special Charges - Schedule of Special Charges by Segment (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - Share-Based Compensation - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - Share-Based Compensation - Share-based Compensation Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - Share-Based Compensation - Unvested Restricted Share Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - Share-Based Compensation - Restricted Stock Unit Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - Share-Based Compensation - Performance Stock Units Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - Share-Based Compensation - Stock Option Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - Interest Income and Other (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - Balance Sheet Details (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - Property and Equipment (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - Goodwill and Intangible Assets - Changes in Carrying Amounts of Goodwill by Operating Segment (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - Goodwill and Intangible Assets - Intangible assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - Goodwill and Intangible Assets - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - Goodwill and Intangible Assets - Future Amortization Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - Notes Receivable from Employees - Changes in Carrying Amount of Notes Receivable From Employees (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - Notes Receivable from Employees - Additional information (Details) link:presentationLink link:calculationLink link:definitionLink 9955547 - Disclosure - Debt (Details) link:presentationLink link:calculationLink link:definitionLink 9955548 - Disclosure - Leases - Lease Assets and Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955549 - Disclosure - Leases - Lease Cost (Details) link:presentationLink link:calculationLink link:definitionLink 9955550 - Disclosure - Leases - Maturity Analysis (Details) link:presentationLink link:calculationLink link:definitionLink 9955550 - Disclosure - Leases - Maturity Analysis (Details) link:presentationLink link:calculationLink link:definitionLink 9955551 - Disclosure - Leases - Cash Paid For Operating Leases and Noncash Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955552 - Disclosure - Leases - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955553 - Disclosure - Commitments and Contingencies - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 9955554 - Disclosure - Income Taxes - Components of Deferred Tax Assets and Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955555 - Disclosure - Income Taxes - Deferred Tax Assets Valuation Allowance (Details) link:presentationLink link:calculationLink link:definitionLink 9955556 - Disclosure - Income Taxes - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955557 - Disclosure - Income Taxes - Components of Income Before Income Tax Provision from Continuing Operations (Details) link:presentationLink link:calculationLink link:definitionLink 9955558 - Disclosure - Income Taxes - Components of Income Tax Provision from Continuing Operations (Details) link:presentationLink link:calculationLink link:definitionLink 9955558 - Disclosure - Income Taxes - Components of Income Tax Provision from Continuing Operations (Details) link:presentationLink link:calculationLink link:definitionLink 9955559 - Disclosure - Income Taxes - Components of Cash Paid For Income Taxes and Tax Credits (Details) link:presentationLink link:calculationLink link:definitionLink 9955560 - Disclosure - Income Taxes - Income Tax Provision From Continuing Operations Resulted In Effective Tax Rates (Details) link:presentationLink link:calculationLink link:definitionLink 9955561 - Disclosure - Income Taxes - Income Tax Provision from Continuing Operations Resulted in Effective Tax Rates (Details) link:presentationLink link:calculationLink link:definitionLink 9955562 - Disclosure - Stockholders' Equity - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955563 - Disclosure - Stockholders' Equity - Stock Repurchases (Details) link:presentationLink link:calculationLink link:definitionLink 9955564 - Disclosure - Employee Benefit Plans (Details) link:presentationLink link:calculationLink link:definitionLink 9955565 - Disclosure - Segment Reporting - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955566 - Disclosure - Segment Reporting - Revenues and Adjusted Segment Earnings before Interest, Taxes, Depreciation and Amortization for Reportable Segments (Details) link:presentationLink link:calculationLink link:definitionLink 9955567 - Disclosure - Segment Reporting - Reconciliation of Net Income To Adjusted Segment Earnings before Interest, Taxes, Depreciation and Amortization (Details) link:presentationLink link:calculationLink link:definitionLink 9955568 - Disclosure - Segment Reporting - Revenues Based on Location of Legal Entity (Details) link:presentationLink link:calculationLink link:definitionLink 9955569 - Disclosure - Segment Reporting - Information on Long-Lived Assets and Net Assets (Details) link:presentationLink link:calculationLink link:definitionLink