0000001 - Document - Cover Page link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - Consolidated Statements of Income (Unaudited) link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - Consolidated Statements of Comprehensive Income (Unaudited) link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - Consolidated Balance Sheets (Unaudited) link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - Consolidated Balance Sheets (Unaudited) (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - Consolidated Statements of Cash Flows (Unaudited) link:presentationLink link:calculationLink link:definitionLink 9952156 - Statement - Consolidated Statements of Changes in Stockholders’ Equity (Unaudited) link:presentationLink link:calculationLink link:definitionLink 9952157 - Statement - Consolidated Statements of Changes in Stockholders’ Equity (Unaudited) (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952158 - Disclosure - Merger Agreement link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - Segment Reporting link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - Railway Operating Revenues link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - Stock-Based Compensation link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - Restructuring and Other Charges link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - Earnings Per Share link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - Accumulated Other Comprehensive Loss link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - Stock Repurchase Program link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - Investments link:presentationLink link:calculationLink link:definitionLink 9952167 - Disclosure - Debt link:presentationLink link:calculationLink link:definitionLink 9952168 - 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Disclosure - Earnings Per Share - Calculation of Basic and Diluted Earnings Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - Earnings Per Share - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - Accumulated Other Comprehensive Loss (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - Stock Repurchase Program (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - Investments (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - Debt (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - Pensions and Other Postretirement Benefits (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - Fair Values of Financial Instruments (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - 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