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Deferred Revenue and Advances from Customers (Deferred Revenue and Advances From Customers) (Details) link:presentationLink link:calculationLink link:definitionLink 41003 - Disclosure - Pension and Postretirement Health and Life Benefits (Schedule of Net Benefit Costs) (Details) link:presentationLink link:calculationLink link:definitionLink 41102 - Disclosure - Stock-Based Compensation (Stock-Based Compensation Costs) (Details) link:presentationLink link:calculationLink link:definitionLink 41701 - Disclosure - Segment Information (Geographic) (Details) link:presentationLink link:calculationLink link:definitionLink 00090 - Document - Document and Entity Information link:presentationLink link:calculationLink link:definitionLink 00101 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 00401 - Statement - CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 10101 - 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Disclosure - Pension and Postretirement Health and Life Benefits link:presentationLink link:calculationLink link:definitionLink 11101 - Disclosure - Stock-Based Compensation link:presentationLink link:calculationLink link:definitionLink 11201 - Disclosure - Income Taxes link:presentationLink link:calculationLink link:definitionLink 11301 - Disclosure - Stockholders' Equity link:presentationLink link:calculationLink link:definitionLink 11401 - Disclosure - Net Income Per Share link:presentationLink link:calculationLink link:definitionLink 11501 - Disclosure - Environmental Compliance link:presentationLink link:calculationLink link:definitionLink 11601 - Disclosure - Commitments and Contingencies link:presentationLink link:calculationLink link:definitionLink 11701 - Disclosure - Revenue by Geographic Area, Major Customers and Segment Information link:presentationLink link:calculationLink link:definitionLink 11801 - Disclosure - Subsequent Events link:presentationLink link:calculationLink link:definitionLink 11901 - 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