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Disclosure - Revenue from Contracts with Customers - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2412405 - Disclosure - Revenue from Contracts with Customers Revenue from Contracts with Customers - Amortized and Capitalized Costs (Details) link:presentationLink link:calculationLink link:definitionLink 2113104 - Disclosure - Investments link:presentationLink link:calculationLink link:definitionLink 2314304 - Disclosure - Investments (Tables) link:presentationLink link:calculationLink link:definitionLink 2415406 - Disclosure - Investments - Other Investments (Details) link:presentationLink link:calculationLink link:definitionLink 2416407 - Disclosure - Investments - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2117105 - Disclosure - Property, Plant and Equipment link:presentationLink link:calculationLink link:definitionLink 2318305 - Disclosure - Property, Plant and Equipment (Tables) link:presentationLink link:calculationLink link:definitionLink 2419408 - 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Disclosure - Leases - Maturity of Lease Liability - Lessee (Details) link:presentationLink link:calculationLink link:definitionLink 2434417 - Disclosure - Leases - Maturity of Lease Liability - Lessee (Details) link:presentationLink link:calculationLink link:definitionLink 2435418 - Disclosure - Leases - Maturity of Lease Liability - Lessor (Details) link:presentationLink link:calculationLink link:definitionLink 2136109 - Disclosure - Income Taxes link:presentationLink link:calculationLink link:definitionLink 2337309 - Disclosure - Income Taxes (Tables) link:presentationLink link:calculationLink link:definitionLink 2438419 - Disclosure - Income Taxes - Reconciliation of Income Taxes (Details) link:presentationLink link:calculationLink link:definitionLink 2439420 - Disclosure - Income Taxes - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2140110 - Disclosure - Stock Compensation and Earnings per Share link:presentationLink link:calculationLink link:definitionLink 2341310 - 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Disclosure - Subsequent Events link:presentationLink link:calculationLink link:definitionLink 2450425 - Disclosure - Subsequent Events (Details) link:presentationLink link:calculationLink link:definitionLink