2110100 - Disclosure - Business Segments link:presentationLink link:calculationLink link:definitionLink 2410402 - Disclosure - Business Segments (Details) link:presentationLink link:calculationLink link:definitionLink 2310301 - Disclosure - Business Segments (Tables) link:presentationLink link:calculationLink link:definitionLink 2112100 - Disclosure - Commitments, Contingencies, And Uncertainties link:presentationLink link:calculationLink link:definitionLink 2412401 - Disclosure - Commitments, Contingencies, and Uncertainties (Details) link:presentationLink link:calculationLink link:definitionLink 2113100 - Disclosure - Condensed Consolidating Financial Statements link:presentationLink link:calculationLink link:definitionLink 2413403 - Disclosure - Condensed Consolidating Financial Statements (Balance Sheets) (Details) link:presentationLink link:calculationLink link:definitionLink 2413405 - Disclosure - Condensed Consolidating Financial Statements (Cash Flows) (Details) link:presentationLink link:calculationLink link:definitionLink 2413404 - Disclosure - Condensed Consolidating Financial Statements (Comprehensive Income) (Details) link:presentationLink link:calculationLink link:definitionLink 2413402 - Disclosure - Condensed Consolidating Financial Statements (Details) link:presentationLink link:calculationLink link:definitionLink 2313301 - Disclosure - Condensed Consolidating Financial Statements (Tables) link:presentationLink link:calculationLink link:definitionLink 1001000 - Statement - Consolidated Balance Sheets link:presentationLink link:calculationLink link:definitionLink 1001501 - Statement - Consolidated Balance Sheets (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 2105100 - Disclosure - Debt And Financing link:presentationLink link:calculationLink link:definitionLink 2405402 - Disclosure - Debt And Financing (Details) link:presentationLink link:calculationLink link:definitionLink 2405402 - Disclosure - Debt And Financing (Details) link:presentationLink link:calculationLink link:definitionLink 2305301 - Disclosure - Debt And Financing (Tables) link:presentationLink link:calculationLink link:definitionLink 2101100 - Disclosure - Description Of Business link:presentationLink link:calculationLink link:definitionLink 2401401 - Disclosure - Description Of Business (Details) link:presentationLink link:calculationLink link:definitionLink 0001000 - Document - Document And Entity Information link:presentationLink link:calculationLink link:definitionLink 2106100 - Disclosure - Employee Benefits link:presentationLink link:calculationLink link:definitionLink 2406402 - Disclosure - Employee Benefits (Details) link:presentationLink link:calculationLink link:definitionLink 2306301 - Disclosure - Employee Benefits (Tables) link:presentationLink link:calculationLink link:definitionLink 2107100 - Disclosure - Income Taxes link:presentationLink link:calculationLink link:definitionLink 2407401 - Disclosure - Income Taxes (Details) link:presentationLink link:calculationLink link:definitionLink 2104100 - Disclosure - Liquidity link:presentationLink link:calculationLink link:definitionLink 2404402 - Disclosure - Liquidity (Details) link:presentationLink link:calculationLink link:definitionLink 2404403 - Disclosure - Liquidity (Risks and Uncertainties) (Details) link:presentationLink link:calculationLink link:definitionLink 2304301 - Disclosure - Liquidity (Tables) link:presentationLink link:calculationLink link:definitionLink 2109100 - Disclosure - Loss Per Share link:presentationLink link:calculationLink link:definitionLink 2409402 - Disclosure - Loss Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 2309301 - Disclosure - Loss Per Share Loss Per Share (Tables) link:presentationLink link:calculationLink link:definitionLink 2111100 - Disclosure - Network Optimization link:presentationLink link:calculationLink link:definitionLink 2411402 - Disclosure - Network Optimization (Details) link:presentationLink link:calculationLink link:definitionLink 2311301 - Disclosure - Network Optimization Network Optimization (Tables) link:presentationLink link:calculationLink link:definitionLink 2102100 - Disclosure - Principles Of Consolidation link:presentationLink link:calculationLink link:definitionLink 2402402 - Disclosure - Principles Of Consolidation (Details) link:presentationLink link:calculationLink link:definitionLink 2402403 - Disclosure - Principles Of Consolidation (Fair Value Measurement) (Details) link:presentationLink link:calculationLink link:definitionLink 2402404 - Disclosure - Principles Of Consolidation (Reclassification Out of Accumulated Other Comprehensive Loss) (Details) link:presentationLink link:calculationLink link:definitionLink 2302301 - Disclosure - Principles of Consolidation (Tables) link:presentationLink link:calculationLink link:definitionLink 2108100 - Disclosure - Shareholders' Deficit link:presentationLink link:calculationLink link:definitionLink 2408402 - Disclosure - Shareholders' Deficit (Details) link:presentationLink link:calculationLink link:definitionLink 2308301 - Disclosure - Shareholders' Deficit (Tables) link:presentationLink link:calculationLink link:definitionLink 1004000 - Statement - Statement Of Consolidated Shareholders' Deficit link:presentationLink link:calculationLink link:definitionLink 1003000 - Statement - Statements Of Consolidated Cash Flows link:presentationLink link:calculationLink link:definitionLink 1002000 - Statement - Statements Of Consolidated Comprehensive Loss link:presentationLink link:calculationLink link:definitionLink