0000001 - Document - Cover link:presentationLink link:calculationLink link:definitionLink 0000002 - Document - Audit Information link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - Consolidated Statements of Income link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - Consolidated Statements of Comprehensive Income link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - Consolidated Statements of Comprehensive Income (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - Consolidated Statements of Financial Position link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - Consolidated Statements of Financial Position (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952156 - Statement - Consolidated Statements of Cash Flows link:presentationLink link:calculationLink link:definitionLink 9952157 - Statement - Consolidated Statements of Changes in Common Shareholders' Equity link:presentationLink link:calculationLink link:definitionLink 9952158 - Statement - Consolidated Statements of Changes in Common Shareholders' Equity (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - Nature of Operations link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - Accounting Pronouncements link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - Stock Options and Other Stock Plans link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - Retirement Plans link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - Other Income link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - Income Taxes link:presentationLink link:calculationLink link:definitionLink 9952166 - 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Disclosure - Nature of Operations - Schedule of Freight and Other Revenues (Details) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - Significant Accounting Policies - Schedule of Reconciliation of Cash, Cash Equivalents, and Restricted Cash (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - Significant Accounting Policies - Revenue Recognition (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - Stock Options and Other Stock Plans - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - Stock Options and Other Stock Plans - Schedule of Stock Based Compensation Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - Stock Options and Other Stock Plans - Schedule of Annual Weighted Average Assumptions (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - Stock Options and Other Stock Plans - Schedule of Stock Option Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - Stock Options and Other Stock Plans - Schedule of Additional Information Regarding Stock Option Exercises (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - Stock Options and Other Stock Plans - Schedule of Changes in Retention Awards (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - Stock Options and Other Stock Plans - Schedule of Changes in Performance Stock Unit Awards (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - Retirement Plans - Schedule of Funded Status (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - Retirement Plans - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - 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Disclosure - Leases - Schedule of Leases Assets and Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955567 - Disclosure - Leases - Schedule of Lease Costs (Details) link:presentationLink link:calculationLink link:definitionLink 9955568 - Disclosure - Leases - Schedule of Aggregate Lease Maturities (Details) link:presentationLink link:calculationLink link:definitionLink 9955568 - Disclosure - Leases - Schedule of Aggregate Lease Maturities (Details) link:presentationLink link:calculationLink link:definitionLink 9955568 - Disclosure - Leases - Schedule of Aggregate Lease Maturities (Details) link:presentationLink link:calculationLink link:definitionLink 9955569 - Disclosure - Leases - Schedule of Weighted Average Lease Term and Discount Rate (Details) link:presentationLink link:calculationLink link:definitionLink 9955570 - Disclosure - Leases - Schedule of Other Lease Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955571 - Disclosure - Commitments and Contingencies - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955572 - Disclosure - Commitments and Contingencies - Schedule of Personal Injury Liability Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955573 - Disclosure - Commitments and Contingencies - Schedule of Environmental Liability Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955574 - Disclosure - Share Repurchase Programs - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955575 - Disclosure - Share Repurchase Programs - Schedule of Share Repurchase Programs (Details) link:presentationLink link:calculationLink link:definitionLink 9955576 - Disclosure - Related Parties (Details) link:presentationLink link:calculationLink link:definitionLink