00100 - Document - Document and Entity Informationlink:presentationLinklink:calculationLinklink:definitionLink00200 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED)link:presentationLinklink:calculationLinklink:definitionLink00300 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED)link:presentationLinklink:calculationLinklink:definitionLink00250 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) (PARENTHETICALS)link:presentationLinklink:calculationLinklink:definitionLink00500 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)link:presentationLinklink:calculationLinklink:definitionLink00900 - Disclosure - 1. Nature of Businesslink:presentationLinklink:calculationLinklink:definitionLink00910 - Disclosure - 2. Unaudited Interim Financial Informationlink:presentationLinklink:calculationLinklink:definitionLink00920 - Disclosure - 3. Financial Instrumentslink:presentationLinklink:calculationLinklink:definitionLink00930 - Disclosure - 4. Fair Value Measurementslink:presentationLinklink:calculationLinklink:definitionLink00940 - Disclosure - 5. Debtlink:presentationLinklink:calculationLinklink:definitionLink00950 - Disclosure - 6. Earnings Per Sharelink:presentationLinklink:calculationLinklink:definitionLink00960 - Disclosure - 7. Interim Pension and Other Postretirement Benefit Plan Informationlink:presentationLinklink:calculationLinklink:definitionLink00970 - Disclosure - 8. Commitments and Contingencieslink:presentationLinklink:calculationLinklink:definitionLink00980 - Disclosure - 9. Concentration of Credit Risklink:presentationLinklink:calculationLinklink:definitionLink00990 - Disclosure - 10. Segment Informationlink:presentationLinklink:calculationLinklink:definitionLink