0001001 - Document - Cover Page link:presentationLink link:calculationLink link:definitionLink 0402401 - Document - Auditor Information link:presentationLink link:calculationLink link:definitionLink 1001002 - Statement - CONSOLIDATED BALANCE SHEETS link:presentationLink link:calculationLink link:definitionLink 1402402 - Statement - CONSOLIDATED BALANCE SHEETS Parentheticals link:presentationLink link:calculationLink link:definitionLink 1003003 - Statement - CONSOLIDATED STATEMENTS OF INCOME link:presentationLink link:calculationLink link:definitionLink 1004004 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME link:presentationLink link:calculationLink link:definitionLink 1005005 - Statement - CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY link:presentationLink link:calculationLink link:definitionLink 1006006 - Statement - CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY Equity Statement Parentheticals link:presentationLink link:calculationLink link:definitionLink 1007007 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 2101101 - Disclosure - Organization and Business link:presentationLink link:calculationLink link:definitionLink 2102102 - Disclosure - Summary of Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 2203201 - Disclosure - Summary of Significant Accounting Policies (Policy) link:presentationLink link:calculationLink link:definitionLink 2404403 - Disclosure - Summary of Significant Accounting Policies (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 2305301 - Disclosure - Accounting Policies (Tables) link:presentationLink link:calculationLink link:definitionLink 2106103 - Disclosure - Revenue Recognition Revenue Recognition (Notes) link:presentationLink link:calculationLink link:definitionLink 2307302 - Disclosure - Revenue Recognition (Tables) link:presentationLink link:calculationLink link:definitionLink 2408404 - Disclosure - Revenue Recognition (Details) link:presentationLink link:calculationLink link:definitionLink 2109104 - Disclosure - Performance Bonds and Guaranty Fund Contributions link:presentationLink link:calculationLink link:definitionLink 2310303 - Disclosure - Performance Bonds and Guaranty Fund Contributions (Tables) link:presentationLink link:calculationLink link:definitionLink 2411405 - Disclosure - Performance Bonds and Guaranty Fund Contributions (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 2412406 - Disclosure - Performance Bonds and Guaranty Fund Contributions (Cash and Securities Held as Performance Bonds and Guaranty Fund Contributions at Fair Value) (Details) link:presentationLink link:calculationLink link:definitionLink 2413407 - Disclosure - Performance Bonds and Guaranty Fund Contributions (Performance Bond Deposits and Security Deposits) (Details) link:presentationLink link:calculationLink link:definitionLink 2414408 - Disclosure - Performance Bonds and Guaranty Fund Contributions Available for Sale Reinvestment Securities (Details) link:presentationLink link:calculationLink link:definitionLink 2115105 - Disclosure - Property link:presentationLink link:calculationLink link:definitionLink 2316304 - Disclosure - Property (Tables) link:presentationLink link:calculationLink link:definitionLink 2417409 - Disclosure - Property (Details) link:presentationLink link:calculationLink link:definitionLink 2118106 - Disclosure - Intangible Assets and Goodwill link:presentationLink link:calculationLink link:definitionLink 2319305 - Disclosure - Intangible Assets and Goodwill (Tables) link:presentationLink link:calculationLink link:definitionLink 2320306 - Disclosure - Intangible Assets and Goodwill Goodwill (Tables) link:presentationLink link:calculationLink link:definitionLink 2421410 - Disclosure - Intangible Assets and Goodwill (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 2422411 - Disclosure - Intangible Assets and Goodwill (Components of Intangible Assets) (Details) link:presentationLink link:calculationLink link:definitionLink 2423412 - Disclosure - Intangible Assets and Goodwill Intangible Assets and Goodwill (Useful Lives of Intangible Assets) (Details) link:presentationLink link:calculationLink link:definitionLink 2424413 - Disclosure - Intangible Assets and Goodwill (Future Estimated Amortization Expense) (Details) link:presentationLink link:calculationLink link:definitionLink 2425414 - Disclosure - Intangible Assets and Goodwill Intangible Assets and Goodwill (Components of Goodwill) (Details) link:presentationLink link:calculationLink link:definitionLink 2126107 - Disclosure - Long-term Investments link:presentationLink link:calculationLink link:definitionLink 2427415 - Disclosure - Long-Term Investments (Details) link:presentationLink link:calculationLink link:definitionLink 2128108 - Disclosure - Debt link:presentationLink link:calculationLink link:definitionLink 2329307 - Disclosure - Debt (Tables) link:presentationLink link:calculationLink link:definitionLink 2430416 - Disclosure - Debt (Schedule of Short-Term and Long-Term Debt) (Details) link:presentationLink link:calculationLink link:definitionLink 2431417 - Disclosure - Debt (Long-Term Debt Maturities at Par Value) (Details) link:presentationLink link:calculationLink link:definitionLink 2132109 - Disclosure - Income Taxes link:presentationLink link:calculationLink link:definitionLink 2333308 - Disclosure - Income Taxes (Tables) link:presentationLink link:calculationLink link:definitionLink 2434418 - Disclosure - Income Taxes (Income Tax Provision) (Details) link:presentationLink link:calculationLink link:definitionLink 2435419 - Disclosure - Income Taxes (Federal Income Tax Rate) (Details) link:presentationLink link:calculationLink link:definitionLink 2436420 - Disclosure - Income Taxes (Deferred Tax Assets (Liabilities) ) (Details) link:presentationLink link:calculationLink link:definitionLink 2437421 - Disclosure - Income Taxes (Summary Of Unrecognized Tax Benefits) (Details) link:presentationLink link:calculationLink link:definitionLink 2438422 - Disclosure - Income Taxes (Reconciliation Of Unrecognized Tax Benefits) (Details) link:presentationLink link:calculationLink link:definitionLink 2439423 - Disclosure - Income Taxes Income Taxes (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 2140110 - Disclosure - Employee Benefit Plans link:presentationLink link:calculationLink link:definitionLink 2341309 - Disclosure - Employee Benefit Plans (Tables) link:presentationLink link:calculationLink link:definitionLink 2442424 - Disclosure - Employee Benefit Plans (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 2443425 - Disclosure - Employee Benefit Plans (Summary of the change in projected benefit obligation) (Details) link:presentationLink link:calculationLink link:definitionLink 2444426 - Disclosure - Employee Benefit Plans (Change in Plan Assets) (Details) link:presentationLink link:calculationLink link:definitionLink 2445427 - Disclosure - Employee Benefit Plans (Fair Value of Plan Assets) (Details) link:presentationLink link:calculationLink link:definitionLink 2446428 - Disclosure - Employee Benefit Plans (Components of Net Pension Expense) (Details) link:presentationLink link:calculationLink link:definitionLink 2447429 - Disclosure - Employee Benefit Plans (Asset Allocation for the Plan) (Details) link:presentationLink link:calculationLink link:definitionLink 2448430 - Disclosure - Employee Benefit Plans (Accumulated Other Comprehensive Income (Loss), of the Prior Service Costs and Actuarial Losses) (Details) link:presentationLink link:calculationLink link:definitionLink 2449431 - Disclosure - Employee Benefit Plans (Anticipated Benefit Payments from the Plan in Future Years) (Details) link:presentationLink link:calculationLink link:definitionLink 2150111 - Disclosure - Commitments link:presentationLink link:calculationLink link:definitionLink 2351310 - Disclosure - Commitments (Tables) link:presentationLink link:calculationLink link:definitionLink 2452432 - Disclosure - Leases and Other Commitments (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 2453433 - Disclosure - Leases and Other Commitments Lease Costs (Details) link:presentationLink link:calculationLink link:definitionLink 2454434 - Disclosure - Leases and Other Commitments Supplemental Cash Flow Information-Leases (Details) link:presentationLink link:calculationLink link:definitionLink 2455435 - Disclosure - Leases and Other Commitments Supplemental Balance Sheet Information-Leases (Details) link:presentationLink link:calculationLink link:definitionLink 2456436 - Disclosure - Leases and Other Commitments Operating Leases Future Minimum Payments Due (Details) link:presentationLink link:calculationLink link:definitionLink 2457437 - Disclosure - Leases and Other Commitments Capital Lease Future Minimum Payments (Details) link:presentationLink link:calculationLink link:definitionLink 2158112 - Disclosure - Contingencies link:presentationLink link:calculationLink link:definitionLink 2159113 - Disclosure - Guarantees link:presentationLink link:calculationLink link:definitionLink 2460438 - Disclosure - Guarantees (Details) link:presentationLink link:calculationLink link:definitionLink 2161114 - Disclosure - Capital Stock link:presentationLink link:calculationLink link:definitionLink 2362311 - Disclosure - Capital Stock (Tables) link:presentationLink link:calculationLink link:definitionLink 2463439 - Disclosure - Capital Stock (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 2464440 - Disclosure - Capital Stock (Capital stock) (Details) link:presentationLink link:calculationLink link:definitionLink 2165115 - Disclosure - Stock-Based Payments link:presentationLink link:calculationLink link:definitionLink 2366312 - Disclosure - Stock-Based Payments (Tables) link:presentationLink link:calculationLink link:definitionLink 2467441 - Disclosure - Stock-Based Payments (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 2468442 - Disclosure - Stock-Based Payments (Compensation Expense And Income Tax Benefit Recognized) (Details) link:presentationLink link:calculationLink link:definitionLink 2469443 - Disclosure - Stock-Based Payments (Stock Option Activity) (Details) link:presentationLink link:calculationLink link:definitionLink 2470444 - Disclosure - Stock-Based Payments (Restricted Stock Activity) (Details) link:presentationLink link:calculationLink link:definitionLink 2171116 - Disclosure - Accumulated Other Comprehensive Income (Loss) link:presentationLink link:calculationLink link:definitionLink 2372313 - Disclosure - Accumulated Other Comprehensive Income (Loss) (Tables) link:presentationLink link:calculationLink link:definitionLink 2473445 - Disclosure - Accumulated Other Comprehensive Income (Loss) (Schedule of Accumulated Other Comprehensive Income) (Details) link:presentationLink link:calculationLink link:definitionLink 2174117 - Disclosure - Fair Value Measurements link:presentationLink link:calculationLink link:definitionLink 2375314 - Disclosure - Fair Value Measurements (Tables) link:presentationLink link:calculationLink link:definitionLink 2476446 - Disclosure - Fair Value Measurements (Financial Instruments Measured at Fair Value on a Recurring Basis) (Details) link:presentationLink link:calculationLink link:definitionLink 2477447 - Disclosure - Fair Value Measurements (Debt Instruments) (Details) link:presentationLink link:calculationLink link:definitionLink 2478448 - Disclosure - Fair Value Measurements (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 2179118 - Disclosure - Earnings Per Share link:presentationLink link:calculationLink link:definitionLink 2380315 - Disclosure - Earnings Per Share (Tables) link:presentationLink link:calculationLink link:definitionLink 2481449 - Disclosure - Earnings Per Share (Basic and Diluted Earnings Per Share) (Details) link:presentationLink link:calculationLink link:definitionLink 2182119 - Disclosure - Subsequent Events link:presentationLink link:calculationLink link:definitionLink 2183120 - Disclosure - Schedule II—Valuation and Qualifying Accounts link:presentationLink link:calculationLink link:definitionLink 2484450 - Disclosure - Schedule II—Valuation and Qualifying Accounts Schedule II—Valuation and Qualifying Accounts (Details) link:presentationLink link:calculationLink link:definitionLink