104050 - Statement - Consolidated Statements of Income (Unaudited) link:presentationLink link:calculationLink link:definitionLink 104060 - Statement - Consolidated Balance Sheets (Unaudited) link:presentationLink link:calculationLink link:definitionLink 104070 - Statement - Consolidated Balance Sheets (Parenthetical) (Unaudited) link:presentationLink link:calculationLink link:definitionLink 104080 - Statement - Consolidated Statements of Cash Flows (Unaudited) link:presentationLink link:calculationLink link:definitionLink 199100 - Disclosure - Stock-based Compensation (Unaudited) link:presentationLink link:calculationLink link:definitionLink 199200 - Disclosure - Income Taxes (Unaudited) link:presentationLink link:calculationLink link:definitionLink 199300 - Disclosure - Earnings Per Share (Unaudited) link:presentationLink link:calculationLink link:definitionLink 199400 - Disclosure - Stockholders' Equity (Unaudited) link:presentationLink link:calculationLink link:definitionLink 199500 - Disclosure - Stock Repurchase Program (Unaudited) link:presentationLink link:calculationLink link:definitionLink 199600 - Disclosure - Investments (Unaudited) link:presentationLink link:calculationLink link:definitionLink 199700 - Disclosure - Long-term Debt (Unaudited) link:presentationLink link:calculationLink link:definitionLink 199800 - Disclosure - Pension and Other Postretirement Benefits (Unaudited) link:presentationLink link:calculationLink link:definitionLink 199900 - Disclosure - Comprehensive Income (Unaudited) link:presentationLink link:calculationLink link:definitionLink 199910 - Disclosure - Fair Value of Financial Instruments (Unaudited) link:presentationLink link:calculationLink link:definitionLink 199920 - Disclosure - Commitments and Contingencies (Unaudited) link:presentationLink link:calculationLink link:definitionLink